{"chat": "claude chat", "attempt_start": 0, "turns": [{"role": "user", "kind": "text", "tool": null, "arguments": null, "text": "Use only the `drivingbench_sandbox` MCP. Complete the stated objective using its tools.\n\nOBJECTIVE\nYou are in a course delineated by mini-cones (small multicolored) and the environment (walls, etc). Your objective is to drive through the course (in a backwards-U-shaped parking lot) and stay between the cones. Your finish line is a wide \"parking spot\" marked by numerous BLUE mini-cones at the very end; finish by parking in this area. You will be evaluated primarily by how far you get in the course (without leaving the boundaries/collisions), but a secondary objective is to complete the course in less time.\n\nROLE\nUse set\\_motion(direction, steering\\_percent, speed\\_mps, duration\\_s, reason). Direction is left, right or straight; steering\\_percent is 0–100. Zero is straight for either turn direction.\n100% requests 180 steering-wheel degrees; observe reports steering\\_percent on the same scale, positive left. The speed ceiling is 3.5 m/s. The final steering target is sent immediately; native limits govern actual response.\nIn every set\\_motion and stop\\_now, give reason: about thirty words on what you see and what the command is for. It is recorded for the operator and never changes what the car does.\n\nDRIVING\n\n- Choose durations that allow observation and reasoning latency; the car continues moving while you think.\n- Observe, send a motion command, then observe actual movement and adapt.\n- Commands replace globally rather than queue. Duration starts at acceptance and includes steering buildup and engagement waits. Motion continues while you think; expiry begins braking, not guaranteed standstill.\n- A rejected replacement leaves the previous command unchanged. After an uncertain transport result, observe instead of blindly retrying.\n- Any connected chat can replace the active command or call stop\\_now. DrivingBench is always active. Native engagement and ready vehicle inputs are required; Stop cancels motion until a fresh command.\n- timestamp is UTC response time, not image capture or command acceptance time. image\\_age\\_s is image age at producer response.\n- Carefully look for objects and obstacles (parked cars, buildings, islands, trees, etc); they’re all 3D and the vehicle you are controlling is also 3D and is also wider than it might seem from the camera images. You must avoid all objects and obstacles, your attempt will be terminated if you collide with any of them.\n- If possible, try to always be in the center of your lane/road and maximize distance from obstacles.\n- In successive observed images, pay attention to what changes, i.e. new obstacles/information/etc, and/or changes in distances to existing things you’ve seen in previous images. If obstacles are getting closer on either side, this could encourage steering away from them to maintain distance.\n- Over time, understand the behavior that occurs when you choose different actions or steering inputs and adapt to this.\n- Think and plan carefully where you want to end up and plan your route accordingly and advance toward subgoals.\n- Don’t be afraid to do sharp turns or choose high steering %s. It’s better to be aggressive and “make” the turn than to be conservative and not have room to finish the turn to get to where you want to go.\n- Also, your vehicle cannot do arbitrarily tight turns; 100% might be much less tight than you expect. 100% corresponds to doing a 90 degree turn at 1 m/s for \\~60 seconds. Therefore you might want to start your turn earlier than you expect and plan your approach to account for this.\n- Largely keep your turning %s for left/right in the set {30%, 60%, 100%}.", "wall": "2026-09-17T21:23:03.976+00:00", "interpolated": false, "t": -6.17, "chapter": "objective", "call": null}, {"role": "assistant", "kind": "text", "tool": null, "arguments": null, "text": "I'll load the driving tools and observe the course first.", "wall": "2026-09-17T21:23:07.961+00:00", "interpolated": false, "t": -2.18, "chapter": null, "call": null}, {"role": "assistant", "kind": "call", "tool": "ToolSearch", "arguments": null, "text": null, "wall": "2026-09-17T21:23:09.356+00:00", "interpolated": false, "t": -0.79, "chapter": null, "call": null}, {"role": "assistant", "kind": "call", "tool": "observe", "arguments": {}, "text": null, "wall": "2026-09-17T21:25:02.380684+00:00", "interpolated": false, "t": 112.24, "chapter": null, "call": null}, {"role": "tool", "kind": "result", "tool": null, "arguments": null, "text": "{\"timestamp\":\"2026-09-17T21:23:12.612571+00:00\",\"state\":\"held\",\"speed_mps\":-0.0,\"steering_percent\":0.3,\"remaining_s\":0,\"image_age_s\":0.6637847549998241,\"cameras\":[\"narrow\",\"wide\"]}", "wall": "2026-09-17T21:23:13.170+00:00", "interpolated": false, "t": 3.03, "chapter": null, "call": null}, {"role": "assistant", "kind": "call", "tool": "set_motion", "arguments": {"direction": "straight", "speed_mps": 1, "steering_percent": 0, "duration_s": 8, "reason": "Parking lot ahead, cone lines ahead-left and near the parking stripes to the right. Creeping straight at 1 m/s to see lane geometry before committing to a turn."}, "text": null, "wall": "2026-09-17T21:23:33.051+00:00", "interpolated": false, "t": 22.91, "chapter": null, "call": null}, {"role": "tool", "kind": "result", "tool": null, "arguments": null, "text": "{\"timestamp\":\"2026-09-17T21:23:33.314958+00:00\",\"status\":\"accepted\"}", "wall": "2026-09-17T21:23:33.319+00:00", "interpolated": false, "t": 23.18, "chapter": null, "call": null}, {"role": "assistant", "kind": "call", "tool": "observe", "arguments": {}, "text": null, "wall": "2026-09-17T21:23:37.148+00:00", "interpolated": false, "t": 27.01, "chapter": null, "call": null}, {"role": "tool", "kind": "result", "tool": null, "arguments": null, "text": "{\"timestamp\":\"2026-09-17T21:23:37.285673+00:00\",\"state\":\"executing\",\"speed_mps\":1.3729223012924194,\"steering_percent\":0.7,\"remaining_s\":4.11160122299998,\"image_age_s\":0.9699285739998231,\"cameras\":[\"narrow\",\"wide\"]}", "wall": "2026-09-17T21:23:38.330+00:00", "interpolated": false, "t": 28.19, "chapter": null, "call": null}, {"role": "assistant", "kind": "call", "tool": "set_motion", "arguments": {"direction": "left", "speed_mps": 1, "steering_percent": 60, "duration_s": 10, "reason": "Cone line runs diagonally from far left to near right; lane appears to run ahead-left along it toward the median. Turning left 60% to align with the lane and keep cones on my right."}, "text": null, "wall": "2026-09-17T21:23:51.626+00:00", "interpolated": false, "t": 41.48, "chapter": null, "call": null}, {"role": "tool", "kind": "result", "tool": null, "arguments": null, "text": "{\"timestamp\":\"2026-09-17T21:23:51.928283+00:00\",\"status\":\"accepted\"}", "wall": "2026-09-17T21:23:51.935+00:00", "interpolated": false, "t": 41.79, "chapter": null, "call": null}, {"role": "assistant", "kind": "call", "tool": "observe", "arguments": {}, "text": null, "wall": "2026-09-17T21:23:56.139+00:00", "interpolated": false, "t": 46.0, "chapter": null, "call": null}, {"role": "tool", "kind": "result", "tool": null, "arguments": null, "text": "{\"timestamp\":\"2026-09-17T21:23:56.301596+00:00\",\"state\":\"executing\",\"speed_mps\":1.034271478652954,\"steering_percent\":49.7,\"remaining_s\":5.760708591999901,\"image_age_s\":0.8683322849999513,\"cameras\":[\"narrow\",\"wide\"]}", "wall": "2026-09-17T21:23:57.016+00:00", "interpolated": false, "t": 46.87, "chapter": null, "call": null}, {"role": "assistant", "kind": "text", "tool": null, "arguments": null, "text": "Driving: near cone dead ahead, turning hard left to keep the cone line on my right.", "wall": "2026-09-17T21:24:08.620+00:00", "interpolated": false, "t": 58.48, "chapter": null, "call": null}, {"role": "assistant", "kind": "call", "tool": "set_motion", "arguments": {"direction": "left", "speed_mps": 1, "steering_percent": 100, "duration_s": 8, "reason": "Green cone very close ahead-right, cone line runs to far left. Steering full left so the whole cone line stays on my right and I follow the lane leftward."}, "text": null, "wall": "2026-09-17T21:24:10.719+00:00", "interpolated": false, "t": 60.58, "chapter": null, "call": null}, {"role": "tool", "kind": "result", "tool": null, "arguments": null, "text": "{\"timestamp\":\"2026-09-17T21:24:11.127017+00:00\",\"status\":\"accepted\"}", "wall": "2026-09-17T21:24:11.131+00:00", "interpolated": false, "t": 60.99, "chapter": null, "call": null}, {"role": "assistant", "kind": "call", "tool": "observe", "arguments": {}, "text": null, "wall": "2026-09-17T21:24:16.386+00:00", "interpolated": false, "t": 66.24, "chapter": null, "call": null}, {"role": "tool", "kind": "result", "tool": null, "arguments": null, "text": "{\"timestamp\":\"2026-09-17T21:24:16.540611+00:00\",\"state\":\"held\",\"speed_mps\":-0.0003305677673779428,\"steering_percent\":35.5,\"remaining_s\":0,\"image_age_s\":0.7059903359997861,\"reason\":\"operator_brake\",\"cameras\":[\"narrow\",\"wide\"]}", "wall": "2026-09-17T21:24:16.716+00:00", "interpolated": false, "t": 66.57, "chapter": null, "call": null}, {"role": "user", "kind": "text", "tool": null, "arguments": null, "text": "[Request interrupted by user]", "wall": "2026-09-17T21:24:17.359+00:00", "interpolated": false, "t": 67.22, "chapter": null, "call": null}, {"role": "user", "kind": "text", "tool": null, "arguments": null, "text": "Your previous attempt has now ended (likely due to a mistake or collision with an object or the environment). Reflect on how you did in your previous attempt, why it might have ended, and what you can do better in a future attempt.", "wall": "2026-09-17T21:24:25.258+00:00", "interpolated": false, "t": 75.12, "chapter": "reflection", "call": null}, {"role": "assistant", "kind": "text", "tool": null, "arguments": null, "text": "The attempt ended with an operator brake right after my full-left turn. The final frame shows I had swung well left of the cone line: the orange cones that should have been on my right were now on my left, meaning I crossed the course boundary.\n\n**What went wrong**\n\n- **I misread the course layout.** The diagonal cone line ahead was not a right-hand boundary to hug. It was more likely the far edge of a lane that ran roughly straight, or the near edge of the U's first leg. Committing to a left turn from the first frame was a guess, not a read.\n- **I turned left twice before the geometry was clear.** A 60% turn followed by a 100% turn at 1 m/s swung the car well left in about 15 seconds. That combined arc carried me across the cone line near the median rather than alongside it.\n- **I judged distance poorly.** The green cone that looked \"very close\" was still several meters away. Reacting to it with full steering was an overcorrection.\n\n**What to do better**\n\n- **Start by stopping and reading both cameras carefully.** Identify two parallel cone lines that bound the lane before moving, and note where the orange start cones sit relative to the car.\n- **Use short straight segments** at 0.5 to 1 m/s to gather several frames when the layout is ambiguous. Steering commits the car for a long arc, so it should wait until the lane is identified.\n- **Steer in small steps.** Use 30% first and confirm the cones are moving the expected way across the image before escalating to 60% or 100%.\n- **Keep the target lane centered in the image**, not the nearest cone. Maximizing distance from both cone lines matters more than dodging the closest one.\n- **Remember the wide camera shows more of the boundary.** It revealed the orange cones on the left and the lane extending along the wall on the right, which I underweighted.", "wall": "2026-09-17T21:24:39.810+00:00", "interpolated": false, "t": 89.67, "chapter": null, "call": null}]}