{
  "version": "1.0-openlabel-compat",
  "source": {
    "url": "https://youtu.be/w3SZVPiNxDU",
    "title": "Rider Cam Delivery Ego Centric Sample",
    "downloaded_resolution": "568x320",
    "fps_source": 30,
    "clip_window_s": [0, 60],
    "annotator": "claude-opus-4-7 (AI pre-annotation, NOT production-grade)",
    "annotation_layers": ["L1_detection_tracking", "L3_ego_state", "L5_captions"],
    "honest_confidence_notes": [
      "All bbox coords are eyeballed from 568x320 frames; distance buckets are visual estimates only.",
      "Track IDs across frames are my best guess; expected ID-switch rate 5-10% (vs. 0.5% in vendor SOW).",
      "No depth / IMU / GPS — ego speed bucket and lean angle inferred from visual cues alone.",
      "Faces and license plates have track_ids but are NOT pixel-masked here (do that downstream)."
    ]
  },
  "sampling": {
    "mode": "0.5fps_base_plus_event_keyframes",
    "base_fps": 0.5,
    "base_frames_count": 30,
    "event_keyframes_count": 6,
    "total_frames": 36,
    "event_keyframe_t_s": [11, 21, 37, 43, 53, 55],
    "event_keyframe_rationale": {
      "11": "door push transition — indoor to outdoor lighting flip",
      "21": "mount and immediate ride-off, multiple agents nearby",
      "37": "PROSHRED truck partially blocking line of sight; pedestrian crossing mid-block",
      "43": "close-pass event with bicycle/pedestrian, camera shows hard right vignette suggesting brake/swerve",
      "53": "two pedestrians + leashed dog enter crosswalk in front of ego",
      "55": "ego yields, dog and walkers cross"
    }
  },
  "scene_meta": {
    "weather": "clear",
    "lighting": "daylight",
    "location_guess": "Harlem / Upper Manhattan, NYC (Mount Morris area; brownstones + historic church visible)",
    "road_types_observed": ["restaurant_interior", "sidewalk", "bike_lane", "shared_road", "intersection_with_crosswalk"],
    "camera_mount": "chest_or_helmet_first_person",
    "audio_quality": "not_analyzed"
  },
  "track_registry": {
    "1":  "food_bag_white_plastic",
    "2":  "counter_staff_arm",
    "3":  "restaurant_logo_circular",
    "4":  "glass_door_with_push_sign",
    "5":  "parked_delivery_scooter_group",
    "6":  "essentials_hoodie_woman",
    "7":  "seated_person_sidewalk",
    "8":  "ego_scooter_handlebar",
    "9":  "bike_lane_marking",
    "10": "traffic_cone_orange",
    "11": "reflective_vest_worker",
    "12": "proshred_box_truck",
    "13": "pedestrian_crossing_mid_block",
    "14": "parked_suv_burgundy",
    "15": "hardware_store_signage",
    "16": "seated_person_wheelchair_market",
    "17": "bicycle_in_lane_market",
    "18": "pedestrian_blue_bag",
    "19": "the_tang_restaurant_signage",
    "20": "pedestrian_crossing_dark_jacket_A",
    "21": "pedestrian_crossing_dark_jacket_B",
    "22": "leashed_dog_small",
    "23": "traffic_cone_crosswalk_group"
  },
  "frames": [
    {
      "frame_id": 0, "t_s": 0, "src": "t001.jpg",
      "scene": "inside_restaurant", "phase": "approach_counter",
      "objects": [
        {"id": 3, "class": "restaurant_logo_static", "bbox": [10, 195, 100, 290], "occ": "none", "dist": "near", "motion": "stationary"},
        {"id": 4, "class": "window_to_street_static", "bbox": [380, 50, 568, 320], "occ": "none", "dist": "near", "motion": "stationary"}
      ],
      "ego": {"mode": "walking", "speed_bucket": "walking", "gaze": "forward", "phone_in_hand": false, "delivery_bag_visible": false}
    },
    {
      "frame_id": 1, "t_s": 2, "src": "t002.jpg",
      "scene": "inside_restaurant", "phase": "pickup_handoff",
      "objects": [
        {"id": 1, "class": "delivery_bag_plastic", "bbox": [250, 95, 410, 320], "occ": "light", "dist": "near", "motion": "slow", "interacts_with_ego": "handoff"},
        {"id": 2, "class": "person_arm_staff", "bbox": [55, 35, 280, 215], "occ": "heavy", "dist": "near", "motion": "slow"}
      ],
      "ego": {"mode": "stationary", "speed_bucket": "stopped", "gaze": "down_to_handoff", "phone_in_hand": false, "delivery_bag_visible": true,
        "annot_action": "delivery_pickup_handoff"}
    },
    {
      "frame_id": 2, "t_s": 4, "src": "t003.jpg",
      "scene": "inside_restaurant", "phase": "secure_package",
      "objects": [
        {"id": 1, "class": "delivery_bag_plastic", "bbox": [0, 30, 470, 320], "occ": "severe", "dist": "near", "motion": "slow", "interacts_with_ego": "in_ego_hands"}
      ],
      "ego": {"mode": "stationary", "speed_bucket": "stopped", "gaze": "down_to_bag", "phone_in_hand": false, "delivery_bag_visible": true,
        "annot_action": "delivery_secure_package"}
    },
    {
      "frame_id": 3, "t_s": 6, "src": "t004.jpg",
      "scene": "inside_restaurant", "phase": "interior_traverse",
      "objects": [
        {"id": 3, "class": "restaurant_logo_static", "bbox": [350, 130, 470, 250], "occ": "none", "dist": "mid", "motion": "stationary"}
      ],
      "ego": {"mode": "walking", "speed_bucket": "walking", "gaze": "forward", "phone_in_hand": false, "delivery_bag_visible": false}
    },
    {
      "frame_id": 4, "t_s": 8, "src": "t005.jpg",
      "scene": "inside_restaurant", "phase": "approach_door",
      "objects": [
        {"id": 4, "class": "glass_door_with_push_sign", "bbox": [125, 30, 350, 280], "occ": "none", "dist": "near", "motion": "stationary"}
      ],
      "ego": {"mode": "walking", "speed_bucket": "walking", "gaze": "forward", "phone_in_hand": false, "delivery_bag_visible": false}
    },
    {
      "frame_id": 5, "t_s": 10, "src": "t006.jpg",
      "scene": "doorway", "phase": "push_door",
      "objects": [
        {"id": 4, "class": "glass_door_with_push_sign", "bbox": [0, 0, 200, 320], "occ": "light", "dist": "near", "motion": "stationary", "interacts_with_ego": "ego_pushing"}
      ],
      "ego": {"mode": "walking", "speed_bucket": "walking", "gaze": "forward", "phone_in_hand": false, "delivery_bag_visible": false,
        "annot_action": "door_push_open"}
    },
    {
      "frame_id": 6, "t_s": 11, "src": "e11.jpg", "is_event_keyframe": true,
      "scene": "doorway_threshold", "phase": "exit_restaurant",
      "objects": [
        {"id": 4, "class": "glass_door_with_push_sign", "bbox": [0, 0, 180, 320], "occ": "light", "dist": "near", "motion": "slow", "interacts_with_ego": "ego_pushing"}
      ],
      "ego": {"mode": "walking", "speed_bucket": "walking", "gaze": "forward_bright", "phone_in_hand": false, "delivery_bag_visible": false,
        "annot_action": "exit_restaurant"}
    },
    {
      "frame_id": 7, "t_s": 12, "src": "t007.jpg",
      "scene": "doorway", "phase": "exit_restaurant",
      "objects": [
        {"id": 4, "class": "glass_door_with_push_sign", "bbox": [70, 0, 320, 320], "occ": "light", "dist": "near", "motion": "stationary"}
      ],
      "ego": {"mode": "walking", "speed_bucket": "walking", "gaze": "forward", "phone_in_hand": false, "delivery_bag_visible": false}
    },
    {
      "frame_id": 8, "t_s": 14, "src": "t008.jpg",
      "scene": "outdoor_sidewalk", "phase": "approach_scooter",
      "objects": [
        {"id": 5, "class": "parked_delivery_scooter_group", "bbox": [110, 200, 305, 310], "occ": "light", "dist": "near", "motion": "stationary"},
        {"id": 5.1, "class": "ebike_parked", "bbox": [85, 215, 165, 320], "occ": "none", "dist": "near", "motion": "stationary"},
        {"id": 5.2, "class": "delivery_rider_other", "bbox": [195, 165, 305, 320], "occ": "none", "dist": "near", "motion": "stationary", "interacts_with_ego": "none"},
        {"id": "bg.cars", "class": "vehicle_traffic_distant", "bbox": [330, 175, 540, 230], "occ": "light", "dist": "far", "motion": "slow"}
      ],
      "ego": {"mode": "walking", "speed_bucket": "walking", "gaze": "forward", "phone_in_hand": false, "delivery_bag_visible": false}
    },
    {
      "frame_id": 9, "t_s": 16, "src": "t009.jpg",
      "scene": "outdoor_sidewalk", "phase": "approach_scooter",
      "objects": [
        {"id": 6, "class": "pedestrian_adult", "bbox": [60, 180, 165, 320], "occ": "light", "dist": "near", "motion": "slow", "interacts_with_ego": "walking_away"},
        {"id": "bg.cars", "class": "vehicle_traffic_distant", "bbox": [0, 185, 215, 230], "occ": "light", "dist": "mid", "motion": "slow"},
        {"id": "bg.cars2", "class": "vehicle_traffic_distant", "bbox": [310, 200, 460, 250], "occ": "light", "dist": "mid", "motion": "slow"}
      ],
      "ego": {"mode": "walking", "speed_bucket": "slow", "gaze": "forward", "phone_in_hand": false, "delivery_bag_visible": false}
    },
    {
      "frame_id": 10, "t_s": 18, "src": "t010.jpg",
      "scene": "outdoor_sidewalk", "phase": "mount_scooter",
      "objects": [
        {"id": 6, "class": "pedestrian_adult", "bbox": [80, 60, 250, 320], "occ": "light", "dist": "near", "motion": "slow"},
        {"id": 14, "class": "parked_vehicle_suv", "bbox": [165, 170, 410, 290], "occ": "light", "dist": "mid", "motion": "stationary"},
        {"id": 8, "class": "ego_scooter_mirror", "bbox": [355, 145, 415, 215], "occ": "none", "dist": "near", "motion": "stationary"}
      ],
      "ego": {"mode": "mounting", "speed_bucket": "stopped", "gaze": "forward", "phone_in_hand": false, "delivery_bag_visible": false,
        "annot_action": "mount_scooter"}
    },
    {
      "frame_id": 11, "t_s": 20, "src": "t011.jpg",
      "scene": "outdoor_sidewalk", "phase": "ride_off_start",
      "objects": [
        {"id": 6, "class": "pedestrian_adult", "bbox": [125, 35, 295, 320], "occ": "light", "dist": "near", "motion": "slow", "interacts_with_ego": "on_path_left"},
        {"id": 7, "class": "person_seated_sidewalk", "bbox": [25, 175, 165, 320], "occ": "light", "dist": "near", "motion": "stationary"},
        {"id": 8, "class": "ego_scooter_handlebar", "bbox": [340, 150, 510, 320], "occ": "none", "dist": "near", "motion": "stationary"}
      ],
      "ego": {"mode": "mounted", "speed_bucket": "stopped", "lean_angle_deg": 0, "steering_intent": "straight", "gaze": "forward", "phone_in_hand": false, "delivery_bag_visible": false}
    },
    {
      "frame_id": 12, "t_s": 21, "src": "e21.jpg", "is_event_keyframe": true,
      "scene": "outdoor_sidewalk", "phase": "ride_off_start",
      "objects": [
        {"id": 6, "class": "pedestrian_adult", "bbox": [120, 30, 280, 320], "occ": "light", "dist": "near", "motion": "slow", "interacts_with_ego": "on_path_left"},
        {"id": 7, "class": "person_seated_sidewalk", "bbox": [40, 175, 165, 320], "occ": "light", "dist": "near", "motion": "stationary"},
        {"id": 14, "class": "parked_vehicle_suv", "bbox": [245, 130, 405, 245], "occ": "light", "dist": "mid", "motion": "stationary"}
      ],
      "ego": {"mode": "mounted", "speed_bucket": "stopped_to_slow", "lean_angle_deg": 0, "steering_intent": "straight", "gaze": "forward", "phone_in_hand": false, "delivery_bag_visible": false,
        "annot_action": "mount_complete_begin_ride"}
    },
    {
      "frame_id": 13, "t_s": 22, "src": "t012.jpg",
      "scene": "shared_road_left_lane", "phase": "ride_off_start",
      "objects": [
        {"id": 6, "class": "pedestrian_adult", "bbox": [0, 65, 145, 320], "occ": "light", "dist": "near", "motion": "slow"},
        {"id": 14, "class": "parked_vehicle_suv", "bbox": [105, 105, 270, 195], "occ": "light", "dist": "mid", "motion": "stationary"},
        {"id": 8, "class": "ego_scooter_handlebar", "bbox": [205, 130, 560, 320], "occ": "none", "dist": "near", "motion": "stationary"},
        {"id": 10, "class": "traffic_cone_orange", "bbox": [505, 195, 540, 250], "occ": "none", "dist": "mid", "motion": "stationary"}
      ],
      "ego": {"mode": "riding", "speed_bucket": "slow", "pedal_state": "n/a_scooter_throttle", "brake_intensity": "soft", "lean_angle_deg": 0, "steering_intent": "straight", "gaze": "forward", "phone_in_hand": false, "delivery_bag_visible": "behind_ego"}
    },
    {
      "frame_id": 14, "t_s": 24, "src": "t013.jpg",
      "scene": "bike_lane", "phase": "ride_in_bike_lane",
      "objects": [
        {"id": 9, "class": "bike_lane_marking", "bbox": [365, 165, 540, 320], "occ": "none", "dist": "near", "motion": "stationary"},
        {"id": 10, "class": "traffic_cone_orange", "bbox": [525, 165, 568, 245], "occ": "none", "dist": "mid", "motion": "stationary"},
        {"id": 8, "class": "ego_scooter_dashboard", "bbox": [40, 75, 280, 320], "occ": "none", "dist": "near", "motion": "stationary"}
      ],
      "ego": {"mode": "riding", "speed_bucket": "slow", "pedal_state": "throttle", "brake_intensity": "none", "lean_angle_deg": 5, "steering_intent": "weave_right", "gaze": "down_dashboard_then_forward", "phone_in_hand": false, "delivery_bag_visible": "behind_ego",
        "annot_action": "lane_change_to_bike_lane"}
    },
    {
      "frame_id": 15, "t_s": 26, "src": "t014.jpg",
      "scene": "bike_lane", "phase": "cruise_bike_lane",
      "objects": [
        {"id": 14, "class": "parked_vehicle_suv", "bbox": [60, 200, 155, 295], "occ": "light", "dist": "mid", "motion": "stationary"},
        {"id": "bg.tree", "class": "street_tree", "bbox": [300, 0, 410, 280], "occ": "none", "dist": "mid", "motion": "stationary"},
        {"id": 10, "class": "traffic_cone_orange", "bbox": [410, 250, 460, 305], "occ": "none", "dist": "mid", "motion": "stationary"},
        {"id": "bg.ped_far", "class": "pedestrian_adult_far", "bbox": [340, 220, 365, 285], "occ": "none", "dist": "far", "motion": "slow"}
      ],
      "ego": {"mode": "riding", "speed_bucket": "cruise", "pedal_state": "throttle", "brake_intensity": "none", "lean_angle_deg": 0, "steering_intent": "straight", "gaze": "forward", "phone_in_hand": false, "delivery_bag_visible": "behind_ego"}
    },
    {
      "frame_id": 16, "t_s": 28, "src": "t015.jpg",
      "scene": "bike_lane", "phase": "cruise_bike_lane",
      "objects": [
        {"id": "bg.cyclist_far", "class": "cyclist_far", "bbox": [345, 240, 380, 290], "occ": "none", "dist": "far", "motion": "slow"},
        {"id": 14, "class": "parked_vehicle_suv", "bbox": [0, 200, 70, 305], "occ": "light", "dist": "mid", "motion": "stationary"},
        {"id": 10, "class": "traffic_cone_orange", "bbox": [400, 270, 460, 320], "occ": "none", "dist": "mid", "motion": "stationary"}
      ],
      "ego": {"mode": "riding", "speed_bucket": "cruise", "pedal_state": "throttle", "brake_intensity": "none", "lean_angle_deg": 0, "steering_intent": "straight", "gaze": "forward", "phone_in_hand": false, "delivery_bag_visible": "behind_ego"}
    },
    {
      "frame_id": 17, "t_s": 30, "src": "t016.jpg",
      "scene": "bike_lane", "phase": "cruise_bike_lane_overtake_ped",
      "objects": [
        {"id": 6, "class": "pedestrian_adult_repeat?", "bbox": [25, 130, 130, 320], "occ": "light", "dist": "near", "motion": "slow", "interacts_with_ego": "on_path_left", "note": "looks like same essentials hoodie woman OR another in similar attire"},
        {"id": 14, "class": "parked_vehicle_suv", "bbox": [105, 240, 285, 320], "occ": "light", "dist": "mid", "motion": "stationary"},
        {"id": 10, "class": "traffic_cone_orange", "bbox": [480, 280, 540, 320], "occ": "none", "dist": "mid", "motion": "stationary"}
      ],
      "ego": {"mode": "riding", "speed_bucket": "slow", "pedal_state": "coast", "brake_intensity": "soft", "lean_angle_deg": 0, "steering_intent": "straight", "gaze": "forward_left_check", "phone_in_hand": false, "delivery_bag_visible": "behind_ego"}
    },
    {
      "frame_id": 18, "t_s": 32, "src": "t017.jpg",
      "scene": "bike_lane", "phase": "approach_mid_block_ped",
      "objects": [
        {"id": 6, "class": "pedestrian_adult", "bbox": [10, 95, 165, 320], "occ": "light", "dist": "near", "motion": "slow", "interacts_with_ego": "on_path_left"},
        {"id": 11, "class": "pedestrian_reflective_vest_worker", "bbox": [195, 165, 280, 320], "occ": "light", "dist": "mid", "motion": "slow", "interacts_with_ego": "on_path_ahead"},
        {"id": 8, "class": "ego_scooter_mirror", "bbox": [395, 175, 460, 250], "occ": "none", "dist": "near", "motion": "stationary"}
      ],
      "ego": {"mode": "riding", "speed_bucket": "slow", "pedal_state": "coast", "brake_intensity": "soft", "lean_angle_deg": 0, "steering_intent": "straight", "gaze": "forward", "phone_in_hand": false, "delivery_bag_visible": "behind_ego"}
    },
    {
      "frame_id": 19, "t_s": 34, "src": "t018.jpg",
      "scene": "bike_lane", "phase": "approach_intersection_with_truck",
      "objects": [
        {"id": 11, "class": "pedestrian_reflective_vest_worker", "bbox": [190, 165, 280, 285], "occ": "light", "dist": "mid", "motion": "slow"},
        {"id": "bg.suv_dark", "class": "parked_vehicle_suv", "bbox": [0, 170, 80, 250], "occ": "light", "dist": "mid", "motion": "stationary"},
        {"id": 12, "class": "box_truck_proshred", "bbox": [445, 110, 568, 230], "occ": "light", "dist": "mid", "motion": "stationary"},
        {"id": 10, "class": "traffic_cone_orange", "bbox": [410, 215, 440, 270], "occ": "none", "dist": "mid", "motion": "stationary"}
      ],
      "ego": {"mode": "riding", "speed_bucket": "slow", "pedal_state": "coast", "brake_intensity": "soft", "lean_angle_deg": 0, "steering_intent": "straight", "gaze": "forward", "phone_in_hand": false, "delivery_bag_visible": "behind_ego"}
    },
    {
      "frame_id": 20, "t_s": 36, "src": "t019.jpg",
      "scene": "intersection_approach", "phase": "approach_truck_partial_block",
      "objects": [
        {"id": 12, "class": "box_truck_proshred", "bbox": [160, 105, 380, 220], "occ": "light", "dist": "mid", "motion": "stationary", "interacts_with_ego": "ahead_partial_block"},
        {"id": 13, "class": "pedestrian_crossing_mid_block", "bbox": [240, 145, 320, 245], "occ": "light", "dist": "mid", "motion": "slow", "interacts_with_ego": "crossing_ahead"},
        {"id": 10, "class": "traffic_cone_orange", "bbox": [320, 175, 360, 235], "occ": "none", "dist": "mid", "motion": "stationary"},
        {"id": 23, "class": "traffic_cone_crosswalk_group", "bbox": [475, 175, 545, 290], "occ": "none", "dist": "mid", "motion": "stationary"},
        {"id": 9, "class": "bike_lane_marking", "bbox": [275, 240, 450, 320], "occ": "none", "dist": "near", "motion": "stationary"}
      ],
      "ego": {"mode": "riding", "speed_bucket": "slow", "pedal_state": "coast", "brake_intensity": "medium", "lean_angle_deg": 0, "steering_intent": "straight", "gaze": "forward", "phone_in_hand": false, "delivery_bag_visible": "behind_ego",
        "annot_action": "yield_to_truck_and_mid_block_crosser"}
    },
    {
      "frame_id": 21, "t_s": 37, "src": "e37.jpg", "is_event_keyframe": true,
      "scene": "intersection_approach", "phase": "navigate_around_truck",
      "objects": [
        {"id": 12, "class": "box_truck_proshred", "bbox": [140, 90, 360, 220], "occ": "light", "dist": "mid", "motion": "stationary"},
        {"id": 13, "class": "pedestrian_crossing_mid_block", "bbox": [220, 145, 300, 250], "occ": "light", "dist": "mid", "motion": "slow", "interacts_with_ego": "crossing_ahead"},
        {"id": 9, "class": "bike_lane_marking", "bbox": [275, 240, 450, 320], "occ": "none", "dist": "near", "motion": "stationary"},
        {"id": 23, "class": "traffic_cone_crosswalk_group", "bbox": [445, 175, 545, 285], "occ": "none", "dist": "mid", "motion": "stationary"}
      ],
      "ego": {"mode": "riding", "speed_bucket": "slow", "pedal_state": "coast", "brake_intensity": "medium", "lean_angle_deg": 0, "steering_intent": "straight", "gaze": "forward_tracking_ped", "phone_in_hand": false, "delivery_bag_visible": "behind_ego",
        "annot_action": "yield_to_mid_block_crosser"}
    },
    {
      "frame_id": 22, "t_s": 38, "src": "t020.jpg",
      "scene": "intersection", "phase": "cross_intersection",
      "objects": [
        {"id": 8, "class": "ego_scooter_handlebar_mirror", "bbox": [0, 35, 220, 290], "occ": "none", "dist": "near", "motion": "stationary"},
        {"id": "bg.ped_far", "class": "pedestrian_adult_far", "bbox": [395, 105, 440, 200], "occ": "light", "dist": "far", "motion": "slow"},
        {"id": "bg.truck_far", "class": "box_truck_far", "bbox": [120, 115, 240, 195], "occ": "light", "dist": "far", "motion": "stationary"}
      ],
      "ego": {"mode": "riding", "speed_bucket": "slow", "pedal_state": "throttle", "brake_intensity": "none", "lean_angle_deg": 0, "steering_intent": "straight", "gaze": "forward", "phone_in_hand": false, "delivery_bag_visible": "behind_ego"}
    },
    {
      "frame_id": 23, "t_s": 40, "src": "t021.jpg",
      "scene": "market_street_chinatown", "phase": "enter_busy_market_block",
      "objects": [
        {"id": 16, "class": "person_seated_market", "bbox": [85, 140, 220, 320], "occ": "light", "dist": "near", "motion": "stationary"},
        {"id": 6, "class": "pedestrian_white_hoodie", "bbox": [190, 130, 280, 300], "occ": "light", "dist": "near", "motion": "slow", "interacts_with_ego": "on_path_ahead"},
        {"id": 14, "class": "parked_vehicle_suv", "bbox": [275, 120, 460, 250], "occ": "light", "dist": "mid", "motion": "stationary"},
        {"id": "bg.van", "class": "parked_vehicle_van", "bbox": [440, 145, 540, 235], "occ": "light", "dist": "mid", "motion": "stationary"},
        {"id": "bg.lanterns", "class": "decoration_red_lanterns_strung", "bbox": [0, 75, 470, 175], "occ": "none", "dist": "mid", "motion": "stationary"}
      ],
      "ego": {"mode": "riding", "speed_bucket": "slow", "pedal_state": "coast", "brake_intensity": "soft", "lean_angle_deg": 0, "steering_intent": "straight", "gaze": "forward", "phone_in_hand": false, "delivery_bag_visible": "behind_ego"}
    },
    {
      "frame_id": 24, "t_s": 42, "src": "t022.jpg",
      "scene": "market_street_chinatown", "phase": "close_pass_with_ped_and_cyclist",
      "risk_flag": "T3_close_pass",
      "objects": [
        {"id": 6, "class": "pedestrian_white_hoodie", "bbox": [195, 95, 290, 320], "occ": "light", "dist": "near", "motion": "slow", "interacts_with_ego": "very_close_left_within_0.7m"},
        {"id": 17, "class": "cyclist_in_lane_market", "bbox": [195, 175, 260, 295], "occ": "heavy", "dist": "near", "motion": "slow"},
        {"id": 16, "class": "person_seated_market", "bbox": [130, 130, 220, 300], "occ": "light", "dist": "near", "motion": "stationary"},
        {"id": "bg.darkvignette", "class": "ego_camera_artifact", "bbox": [320, 0, 568, 320], "occ": "none", "dist": "near", "motion": "stationary", "note": "right half of frame blurred/dark — likely camera hood or hard hand vibration during brake"}
      ],
      "ego": {"mode": "riding", "speed_bucket": "slow", "pedal_state": "coast", "brake_intensity": "medium", "lean_angle_deg": -3, "steering_intent": "straight", "gaze": "forward_left", "phone_in_hand": false, "delivery_bag_visible": "behind_ego",
        "annot_action": "ride_pass_pedestrian_close_left"}
    },
    {
      "frame_id": 25, "t_s": 43, "src": "e43.jpg", "is_event_keyframe": true,
      "scene": "market_street_chinatown", "phase": "post_close_pass",
      "risk_flag": "T3_close_pass_resolved",
      "objects": [
        {"id": 16, "class": "person_seated_market", "bbox": [115, 130, 225, 285], "occ": "light", "dist": "near", "motion": "stationary"},
        {"id": "bg.darkvignette", "class": "ego_camera_artifact", "bbox": [240, 0, 568, 320], "occ": "none", "dist": "near", "motion": "stationary"}
      ],
      "ego": {"mode": "riding", "speed_bucket": "slow", "pedal_state": "coast", "brake_intensity": "soft", "lean_angle_deg": 0, "steering_intent": "straight", "gaze": "forward", "phone_in_hand": false, "delivery_bag_visible": "behind_ego"}
    },
    {
      "frame_id": 26, "t_s": 44, "src": "t023.jpg",
      "scene": "market_street_chinatown", "phase": "continue_market_block",
      "objects": [
        {"id": 16, "class": "person_seated_market", "bbox": [130, 130, 260, 320], "occ": "light", "dist": "near", "motion": "stationary"},
        {"id": 17, "class": "cyclist_in_lane_market", "bbox": [200, 120, 285, 300], "occ": "light", "dist": "near", "motion": "slow", "interacts_with_ego": "ahead_in_lane"},
        {"id": 6, "class": "pedestrian_white_hoodie", "bbox": [255, 115, 360, 320], "occ": "light", "dist": "near", "motion": "slow"},
        {"id": 15, "class": "hardware_store_signage_static", "bbox": [55, 60, 220, 175], "occ": "none", "dist": "mid", "motion": "stationary"},
        {"id": 14, "class": "parked_vehicle_suv", "bbox": [395, 135, 545, 245], "occ": "light", "dist": "mid", "motion": "stationary"}
      ],
      "ego": {"mode": "riding", "speed_bucket": "slow", "pedal_state": "coast", "brake_intensity": "soft", "lean_angle_deg": 0, "steering_intent": "straight", "gaze": "forward", "phone_in_hand": false, "delivery_bag_visible": "behind_ego"}
    },
    {
      "frame_id": 27, "t_s": 46, "src": "t024.jpg",
      "scene": "market_street_chinatown", "phase": "continue_market_block",
      "objects": [
        {"id": 18, "class": "pedestrian_blue_bag", "bbox": [85, 105, 200, 320], "occ": "light", "dist": "near", "motion": "slow", "interacts_with_ego": "walking_away"},
        {"id": 6, "class": "pedestrian_white_hoodie", "bbox": [400, 115, 520, 320], "occ": "light", "dist": "near", "motion": "slow"},
        {"id": 15, "class": "hardware_store_signage_static", "bbox": [115, 50, 280, 165], "occ": "none", "dist": "mid", "motion": "stationary"},
        {"id": 8, "class": "ego_scooter_mirror", "bbox": [380, 60, 480, 165], "occ": "none", "dist": "near", "motion": "stationary"}
      ],
      "ego": {"mode": "riding", "speed_bucket": "slow", "pedal_state": "coast", "brake_intensity": "soft", "lean_angle_deg": 0, "steering_intent": "straight", "gaze": "forward", "phone_in_hand": false, "delivery_bag_visible": "behind_ego"}
    },
    {
      "frame_id": 28, "t_s": 48, "src": "t025.jpg",
      "scene": "approach_destination?", "phase": "approach_the_tang",
      "objects": [
        {"id": 19, "class": "the_tang_restaurant_signage", "bbox": [115, 0, 350, 90], "occ": "none", "dist": "near", "motion": "stationary"},
        {"id": 8, "class": "ego_scooter_mirror", "bbox": [365, 55, 470, 165], "occ": "none", "dist": "near", "motion": "stationary"},
        {"id": 15, "class": "hardware_store_signage_static", "bbox": [395, 40, 520, 150], "occ": "none", "dist": "mid", "motion": "stationary"}
      ],
      "ego": {"mode": "riding", "speed_bucket": "slow", "pedal_state": "coast", "brake_intensity": "soft", "lean_angle_deg": 0, "steering_intent": "weave_right_to_check", "gaze": "right_look_at_signage", "phone_in_hand": false, "delivery_bag_visible": "behind_ego",
        "annot_action": "looking_at_restaurant_signage_maybe_destination"}
    },
    {
      "frame_id": 29, "t_s": 50, "src": "t026.jpg",
      "scene": "cross_block", "phase": "leave_market_block",
      "objects": [
        {"id": 18, "class": "pedestrian_blue_bag", "bbox": [125, 145, 230, 320], "occ": "light", "dist": "near", "motion": "slow"},
        {"id": "bg.cars", "class": "vehicle_traffic", "bbox": [260, 160, 400, 220], "occ": "light", "dist": "mid", "motion": "slow"},
        {"id": 23, "class": "traffic_cone_orange", "bbox": [200, 195, 240, 270], "occ": "none", "dist": "mid", "motion": "stationary"}
      ],
      "ego": {"mode": "riding", "speed_bucket": "slow", "pedal_state": "throttle", "brake_intensity": "none", "lean_angle_deg": 0, "steering_intent": "straight", "gaze": "forward", "phone_in_hand": false, "delivery_bag_visible": "behind_ego"}
    },
    {
      "frame_id": 30, "t_s": 52, "src": "t027.jpg",
      "scene": "intersection_approach", "phase": "approach_crosswalk",
      "objects": [
        {"id": 20, "class": "pedestrian_crossing_in_crosswalk", "bbox": [230, 130, 305, 295], "occ": "light", "dist": "mid", "motion": "slow", "interacts_with_ego": "crossing_ahead"},
        {"id": 21, "class": "pedestrian_crossing_in_crosswalk", "bbox": [355, 130, 430, 295], "occ": "light", "dist": "mid", "motion": "slow", "interacts_with_ego": "crossing_ahead"},
        {"id": 22, "class": "leashed_dog_small", "bbox": [440, 230, 475, 295], "occ": "none", "dist": "mid", "motion": "slow", "interacts_with_ego": "crossing_ahead"},
        {"id": 23, "class": "traffic_cone_crosswalk_group", "bbox": [95, 220, 165, 295], "occ": "none", "dist": "near", "motion": "stationary"},
        {"id": 23.1, "class": "traffic_cone_orange", "bbox": [435, 215, 470, 295], "occ": "none", "dist": "mid", "motion": "stationary"}
      ],
      "ego": {"mode": "riding", "speed_bucket": "slow", "pedal_state": "coast", "brake_intensity": "medium", "lean_angle_deg": 0, "steering_intent": "straight", "gaze": "forward", "phone_in_hand": false, "delivery_bag_visible": "behind_ego",
        "annot_action": "approach_crosswalk_yield"}
    },
    {
      "frame_id": 31, "t_s": 53, "src": "e53.jpg", "is_event_keyframe": true,
      "scene": "intersection", "phase": "yield_to_crosswalk_peds",
      "risk_flag": "T2_yield_to_ped_with_dog",
      "objects": [
        {"id": 20, "class": "pedestrian_crossing_in_crosswalk", "bbox": [230, 140, 295, 290], "occ": "light", "dist": "mid", "motion": "slow", "interacts_with_ego": "crossing_ahead"},
        {"id": 21, "class": "pedestrian_crossing_in_crosswalk", "bbox": [355, 140, 425, 290], "occ": "light", "dist": "mid", "motion": "slow", "interacts_with_ego": "crossing_ahead"},
        {"id": 22, "class": "leashed_dog_small", "bbox": [435, 230, 475, 295], "occ": "none", "dist": "mid", "motion": "slow", "interacts_with_ego": "crossing_ahead"},
        {"id": 9, "class": "crosswalk_marking", "bbox": [220, 220, 510, 320], "occ": "none", "dist": "near", "motion": "stationary"}
      ],
      "ego": {"mode": "riding", "speed_bucket": "slow", "pedal_state": "coast", "brake_intensity": "medium", "lean_angle_deg": 0, "steering_intent": "straight", "gaze": "forward_track_peds_and_dog", "phone_in_hand": false, "delivery_bag_visible": "behind_ego",
        "annot_action": "yield_to_pedestrian_with_dog"}
    },
    {
      "frame_id": 32, "t_s": 54, "src": "t028.jpg",
      "scene": "intersection", "phase": "stopped_yield",
      "risk_flag": "T2_yield_to_ped_with_dog",
      "objects": [
        {"id": 20, "class": "pedestrian_crossing_in_crosswalk", "bbox": [115, 130, 195, 320], "occ": "light", "dist": "near", "motion": "slow"},
        {"id": 21, "class": "pedestrian_crossing_in_crosswalk", "bbox": [250, 130, 320, 320], "occ": "light", "dist": "near", "motion": "slow"},
        {"id": 22, "class": "leashed_dog_small", "bbox": [325, 220, 370, 295], "occ": "none", "dist": "near", "motion": "slow", "interacts_with_ego": "crossing_ahead"},
        {"id": 23, "class": "traffic_cone_orange", "bbox": [440, 200, 485, 305], "occ": "none", "dist": "mid", "motion": "stationary"}
      ],
      "ego": {"mode": "riding", "speed_bucket": "stopped", "pedal_state": "n/a", "brake_intensity": "medium", "lean_angle_deg": 0, "steering_intent": "straight", "gaze": "forward_track_peds_and_dog", "phone_in_hand": false, "delivery_bag_visible": "behind_ego",
        "annot_action": "stopped_yielding"}
    },
    {
      "frame_id": 33, "t_s": 55, "src": "e55.jpg", "is_event_keyframe": true,
      "scene": "intersection", "phase": "ped_clearing_crosswalk",
      "objects": [
        {"id": 20, "class": "pedestrian_crossing_in_crosswalk", "bbox": [85, 130, 175, 320], "occ": "light", "dist": "near", "motion": "slow"},
        {"id": 21, "class": "pedestrian_crossing_in_crosswalk", "bbox": [220, 130, 305, 320], "occ": "light", "dist": "near", "motion": "slow"},
        {"id": 22, "class": "leashed_dog_small", "bbox": [285, 200, 335, 270], "occ": "none", "dist": "near", "motion": "slow"},
        {"id": "bg.cars", "class": "vehicle_traffic", "bbox": [0, 165, 145, 230], "occ": "light", "dist": "far", "motion": "slow"},
        {"id": 23, "class": "traffic_cone_orange", "bbox": [430, 220, 475, 320], "occ": "none", "dist": "near", "motion": "stationary"}
      ],
      "ego": {"mode": "riding", "speed_bucket": "stopped_to_slow", "pedal_state": "n/a", "brake_intensity": "soft", "lean_angle_deg": 0, "steering_intent": "straight", "gaze": "forward", "phone_in_hand": false, "delivery_bag_visible": "behind_ego"}
    },
    {
      "frame_id": 34, "t_s": 56, "src": "t029.jpg",
      "scene": "intersection", "phase": "resume_ride",
      "objects": [
        {"id": 21, "class": "pedestrian_crossing_in_crosswalk", "bbox": [205, 100, 295, 320], "occ": "light", "dist": "near", "motion": "slow"},
        {"id": 22, "class": "leashed_dog_small", "bbox": [290, 210, 360, 280], "occ": "none", "dist": "near", "motion": "slow"},
        {"id": "bg.suv_silver", "class": "vehicle_silver_suv", "bbox": [355, 145, 510, 230], "occ": "light", "dist": "mid", "motion": "slow"},
        {"id": 8, "class": "ego_scooter_handlebar", "bbox": [0, 145, 568, 320], "occ": "none", "dist": "near", "motion": "stationary"}
      ],
      "ego": {"mode": "riding", "speed_bucket": "slow", "pedal_state": "throttle_resuming", "brake_intensity": "none", "lean_angle_deg": 0, "steering_intent": "straight", "gaze": "forward", "phone_in_hand": false, "delivery_bag_visible": "behind_ego"}
    },
    {
      "frame_id": 35, "t_s": 58, "src": "t030.jpg",
      "scene": "residential_block_after_intersection", "phase": "resume_ride",
      "objects": [
        {"id": "bg.cars_parked", "class": "parked_vehicle_line", "bbox": [80, 145, 320, 240], "occ": "light", "dist": "mid", "motion": "stationary"},
        {"id": "bg.suv_silver", "class": "vehicle_silver_suv", "bbox": [365, 145, 470, 230], "occ": "light", "dist": "mid", "motion": "slow"},
        {"id": "bg.ped_mid", "class": "pedestrian_mid_block", "bbox": [310, 145, 370, 285], "occ": "light", "dist": "mid", "motion": "slow"},
        {"id": 8, "class": "ego_scooter_handlebar", "bbox": [0, 105, 480, 320], "occ": "none", "dist": "near", "motion": "stationary"}
      ],
      "ego": {"mode": "riding", "speed_bucket": "slow", "pedal_state": "throttle", "brake_intensity": "none", "lean_angle_deg": 0, "steering_intent": "straight", "gaze": "forward", "phone_in_hand": false, "delivery_bag_visible": "behind_ego"}
    }
  ],
  "captions": {
    "clip_level": [
      {"start_s": 0,  "end_s": 8,
       "en": "Rider is inside an Asian restaurant collecting a delivery order: a white plastic bag with food is handed to the rider over the counter. The rider holds and secures the package, then turns toward the exit.",
       "zh": "骑手在一家亚洲餐厅取餐，店员从柜台递出装着餐品的白色塑料袋，骑手接过并稳住袋子，随后转身朝出口走去。"},
      {"start_s": 8,  "end_s": 14,
       "en": "The rider walks through the dim restaurant interior toward a glass exit door marked 'PUSH / 推', pushes it open, and steps onto the sunny street.",
       "zh": "骑手穿过昏暗的餐厅内部，走向标有「PUSH / 推」的玻璃门，推门后走到阳光明媚的街道上。"},
      {"start_s": 14, "end_s": 22,
       "en": "On the sidewalk: a row of parked delivery scooters and ebikes; another delivery rider stands beside one. The rider walks past pedestrians on a Harlem-area block (church spire visible) and mounts a scooter, preparing to ride.",
       "zh": "人行道上停着一排外卖电动车，旁边站着另一位骑手。本骑手沿哈林区街区走过几个行人（远处可见教堂尖顶），走到一辆电动车前并跨上，准备出发。"},
      {"start_s": 22, "end_s": 30,
       "en": "Now mounted and rolling slowly out of the parking strip into the dedicated bike lane. A pedestrian in a white 'ESSENTIALS' hoodie is on the immediate left. The scooter dashboard becomes visible; orange traffic cones mark the bike-lane boundary.",
       "zh": "骑手已骑上电动车，缓慢驶离停车带进入自行车专用道。左侧紧邻一位穿白色 ESSENTIALS 卫衣的行人；可看见车把上的仪表盘；橙色锥桶标出自行车道边界。"},
      {"start_s": 30, "end_s": 40,
       "en": "Cruising the bike lane at slow speed past a mid-block worker in a reflective vest and a large PROSHRED box truck stopped partway in the next block. A pedestrian crosses mid-block ahead; the rider softens throttle and tracks the pedestrian.",
       "zh": "骑手在自行车道上慢行，经过一位穿反光背心的工人和一辆停在下一街区中的 PROSHRED 大型厢式货车。前方一名行人横穿马路（非斑马线），骑手收油并目视行人轨迹。"},
      {"start_s": 40, "end_s": 50,
       "en": "Entering a busier block decorated with red lanterns (likely a Chinatown-style market block). Multiple pedestrians, a seated person, a cyclist sharing the lane. The rider passes very close on the left of a pedestrian in a white hoodie — a borderline-unsafe close-pass moment. Signage for 'THE TANG' becomes visible.",
       "zh": "进入一段挂着红灯笼、更为热闹的市集街区（疑似华埠风格）。路上有多名行人、一位坐着的人、还有一辆与骑手共用车道的自行车。骑手从一名穿白色卫衣的行人左侧极近距离驶过——属于偏不安全的近距离擦行。前方能看到「THE TANG」餐厅招牌。"},
      {"start_s": 50, "end_s": 60,
       "en": "Approaching a marked intersection. Two pedestrians and a small leashed dog enter the crosswalk in front of the rider. The rider eases off throttle, brakes to a near-stop, yields, and resumes slow riding once the pedestrians and dog clear the crosswalk.",
       "zh": "驶近一个有人行横道的交叉口。两名行人牵着一只小型犬进入斑马线。骑手收油、捏闸近乎停车让行，待行人与狗通过后再缓速前行。"}
    ],
    "event_level": [
      {"t_s": 2,  "type": "delivery_pickup_handoff",       "en": "Rider receives the food bag across the restaurant counter.", "zh": "骑手在餐厅柜台接过餐品袋。"},
      {"t_s": 4,  "type": "delivery_secure_package",       "en": "Rider grips the food bag with both hands to secure it.",    "zh": "骑手双手抓紧餐品袋以固定。"},
      {"t_s": 10, "type": "door_push_open",                "en": "Rider pushes the glass exit door open.",                   "zh": "骑手推开玻璃出口门。"},
      {"t_s": 12, "type": "exit_restaurant",               "en": "Rider crosses the threshold from restaurant interior to street.", "zh": "骑手从餐厅内走到室外街道。"},
      {"t_s": 18, "type": "mount_scooter",                 "en": "Rider mounts a parked delivery scooter.",                  "zh": "骑手跨上停放的外卖电动车。"},
      {"t_s": 24, "type": "traffic_lane_change_to_bike_lane", "en": "Rider weaves right from parking strip into the bike lane.", "zh": "骑手从停车带向右并入自行车道。"},
      {"t_s": 36, "type": "traffic_yield_to_pedestrian",   "en": "Rider slows for a pedestrian crossing mid-block near the PROSHRED truck.", "zh": "骑手为一名在 PROSHRED 货车附近横穿马路的行人减速。"},
      {"t_s": 42, "type": "risk_t3_close_pass",            "en": "Close-pass (<1m) on the left of a pedestrian in white hoodie; no contact, no hard brake but uncomfortable margin.", "zh": "在一名穿白色卫衣的行人左侧近距离擦行（<1m）；未接触、未急刹，但安全余量不足。", "cause": "track_6_pedestrian_white_hoodie"},
      {"t_s": 48, "type": "delivery_search_address",       "en": "Rider gazes right at restaurant signage ('THE TANG'); possibly checking destination.", "zh": "骑手向右注视「THE TANG」招牌，疑似在核对配送目的地。"},
      {"t_s": 52, "type": "traffic_approach_crosswalk",    "en": "Rider approaches a marked crosswalk with pedestrians and a leashed dog about to cross.", "zh": "骑手接近一处有行人和牵绳犬即将通过的斑马线。"},
      {"t_s": 54, "type": "traffic_yield_to_pedestrian",   "en": "Rider stops and yields to crosswalk pedestrians + small dog.", "zh": "骑手停车让行人与小型犬通过。"},
      {"t_s": 56, "type": "traffic_resume_after_yield",    "en": "Rider resumes slow forward motion as pedestrians clear.", "zh": "行人通过后骑手重新缓慢起步。"}
    ],
    "keyframe_level": [
      {"t_s": 0,  "en": "Inside the dimly lit restaurant near the counter; bright window light to the right; rider is on foot.", "zh": "在昏暗的餐厅内靠近柜台处，右侧有明亮窗光，骑手徒步。"},
      {"t_s": 2,  "en": "A staff hand passes a white plastic delivery bag across the counter to the rider's hand.", "zh": "店员的手将一只白色塑料外卖袋从柜台递到骑手手中。"},
      {"t_s": 4,  "en": "Rider grips the bag tightly with both hands at chest level — package-secure moment.", "zh": "骑手双手在胸前紧握袋子——固定包裹的瞬间。"},
      {"t_s": 6,  "en": "Rider walks past the counter; the restaurant's circular logo is visible to the right.", "zh": "骑手走过柜台，右侧可见餐厅的圆形 logo。"},
      {"t_s": 8,  "en": "The dim interior gives way to the bright glass exit door ahead.", "zh": "前方出现明亮的玻璃出口门。"},
      {"t_s": 10, "en": "Rider's hand pushes the glass door marked PUSH / 推; street light floods the frame.", "zh": "骑手的手推开标有 PUSH / 推 的玻璃门，街上的光线涌入画面。"},
      {"t_s": 11, "en": "Half-out the door, transition from interior to bright sunny street.", "zh": "半出门状态，由室内过渡到阳光明媚的街道。"},
      {"t_s": 12, "en": "Rider steps fully onto the sidewalk; PUSH sign visible behind.", "zh": "骑手完全踏上人行道，身后仍可见 PUSH 标识。"},
      {"t_s": 14, "en": "Outdoor sidewalk view: multiple parked delivery scooters and another rider standing by; distant cathedral.", "zh": "室外人行道视角：多辆停放的外卖电动车，旁边另一位骑手；远处可见教堂。"},
      {"t_s": 16, "en": "Walking on the sidewalk past a pedestrian; church and cars across the street.", "zh": "在人行道上走过一名行人，街对面有教堂和车流。"},
      {"t_s": 18, "en": "Pedestrian in front (hoodie); right-side scooter mirror appears, indicating the rider is now next to / mounting a scooter.", "zh": "前方有一名穿连帽衫的行人；右侧出现电动车后视镜，表明骑手已走到电动车旁/正在跨车。"},
      {"t_s": 20, "en": "Mounted on the scooter; the white-hoodie pedestrian is immediately to the left, a seated person is on the sidewalk.", "zh": "已坐上电动车；左侧紧邻一位白色卫衣行人，人行道上有一名坐着的人。"},
      {"t_s": 21, "en": "Just before pulling away; multiple pedestrians around, ego speed near zero.", "zh": "刚要起步前的状态；周围有多名行人，速度接近零。"},
      {"t_s": 22, "en": "Pulling out into the road; handlebar/mirror now dominate right side of frame; pedestrian to left, parked SUV ahead.", "zh": "正驶入路面；车把和后视镜占据画面右侧；左侧有行人，前方停着 SUV。"},
      {"t_s": 24, "en": "Scooter dashboard visible; rider weaves right into the painted bike lane; orange traffic cone marks the boundary.", "zh": "可看到电动车仪表盘；骑手向右并入画有标线的自行车道；橙色锥桶标出边界。"},
      {"t_s": 26, "en": "Cruising the bike lane; parked SUV to left, street tree in middle, traffic cone to right.", "zh": "在自行车道上巡航；左侧停着 SUV，中间一棵行道树，右侧有锥桶。"},
      {"t_s": 28, "en": "Continuing in the bike lane; a distant cyclist crosses far ahead at the intersection.", "zh": "继续在自行车道上行驶；远处一名骑车人在前方交叉口横穿。"},
      {"t_s": 30, "en": "Slowing as a pedestrian (white hoodie) walks in or near the bike lane to the immediate left.", "zh": "因左侧紧邻一名行人（白色卫衣）走在自行车道上或附近，骑手减速。"},
      {"t_s": 32, "en": "Approaching a mid-block worker in a reflective vest crossing the road; ego still in bike lane.", "zh": "前方一名穿反光背心的工人正在路中横穿；本骑手仍在自行车道内。"},
      {"t_s": 34, "en": "A large PROSHRED box truck is stopped on the right; traffic cones mark a work zone.", "zh": "右前方停着一辆 PROSHRED 大型厢式货车，锥桶围出施工/作业区。"},
      {"t_s": 36, "en": "Rider passes alongside the truck; the reflective-vest pedestrian is crossing in front; ego brakes softly.", "zh": "骑手贴着货车驶过；反光背心行人正在车前横穿；骑手轻刹。"},
      {"t_s": 37, "en": "Mid-pass with truck; ped almost across; bike-lane painted bicycle marking is visible on the road.", "zh": "正贴着货车通过；行人即将横穿完毕；路面可见自行车道标识。"},
      {"t_s": 38, "en": "Crossed the intersection; handlebar mirror occupies left half of frame; lighter traffic ahead.", "zh": "通过交叉口；左侧由车把后视镜占据；前方交通变稀。"},
      {"t_s": 40, "en": "Entering a busier market block decorated with red lanterns; multiple pedestrians and a seated person on the sidewalk.", "zh": "进入一段挂红灯笼的热闹市集街区；人行道上有多名行人和一位坐着的人。"},
      {"t_s": 42, "en": "Very close left-side pass of a pedestrian in a white hoodie; right side of frame is dark/blurred — likely camera artifact or rider hood.", "zh": "从一名白色卫衣行人左侧非常近距离擦过；画面右侧偏暗模糊，疑似相机伪影或骑手帽檐。"},
      {"t_s": 43, "en": "Past the close-pass; the seated person remains on the sidewalk; ego continues forward.", "zh": "通过近距离擦行段；坐着的人仍在人行道边；骑手继续前行。"},
      {"t_s": 44, "en": "Continuing past the market block; cyclist and pedestrians sharing the lane; HARDWARE store sign on left.", "zh": "继续通过市集街区；行人和自行车与本车共用车道；左侧可见 HARDWARE 店招。"},
      {"t_s": 46, "en": "Sidewalk view: pedestrian with a blue bag walking away, hardware store, parked scooter.", "zh": "人行道视角：一名手拎蓝色袋子的行人在前方走，硬件店和停放的电动车。"},
      {"t_s": 48, "en": "Riding past 'THE TANG' restaurant signage; rider glances right — possibly checking destination.", "zh": "驶过「THE TANG」餐厅招牌；骑手向右瞥——疑似在确认目的地。"},
      {"t_s": 50, "en": "Pedestrian with blue bag continues on the left; light traffic crossing ahead; an orange cone in the road.", "zh": "蓝色袋子的行人仍在左侧；前方有少量横穿车流；路面上有一橙色锥桶。"},
      {"t_s": 52, "en": "Approaching a marked crosswalk: two pedestrians and a small leashed dog are stepping into the crosswalk.", "zh": "驶近一处人行横道：两名行人和一只小型犬正踏入斑马线。"},
      {"t_s": 53, "en": "Pedestrians fully in crosswalk, dog visible mid-lane; ego brakes to near-stop.", "zh": "两位行人已完全进入斑马线，小狗正在车道中央；骑手刹至近乎停车。"},
      {"t_s": 54, "en": "Stopped at the crosswalk; pedestrians and dog crossing in front; cone to the right.", "zh": "在斑马线前停车让行；行人与小狗在车前通过；右侧有锥桶。"},
      {"t_s": 55, "en": "Dog about to clear the lane; pedestrians close to the opposite curb; ego preparing to resume.", "zh": "小狗即将走出车道；行人已接近对面路缘；骑手准备起步。"},
      {"t_s": 56, "en": "One pedestrian still in lane; silver SUV approaches from across the intersection; ego resumes slow forward motion.", "zh": "仍有一名行人在车道中；交叉口对面有一辆银色 SUV 驶来；骑手缓慢重新起步。"},
      {"t_s": 58, "en": "Past the intersection: line of parked cars on a residential block, light traffic ahead.", "zh": "通过交叉口后：一段住宅街区，两边停车成排，前方交通稀疏。"}
    ]
  }
}
