{"allowed_variants":["truck_appearance","truck_overall_length_m","ego_stop_world_x_m"],"appearances":{"blue":"deep navy blue aerodynamic sleeper tractor, silver lightly ribbed dry-van trailer","red":"dark burgundy aerodynamic sleeper tractor, white lightly ribbed dry-van trailer"},"base_rehearsal_sha256":"5c6404d510fbdcea461eabcfd5e0ff58682edc9c06fea3f621edb2295f0efba1","counts":{"episodes":18,"geometry_cases":9,"test":16,"train":32,"unique_observations":48},"date":"2026-10-16","ego_stop_positions_m":[10.0,11.3,12.6],"evaluation":{"baseline":"same pinned DriveMA NAVSIM checkpoint, same inputs","checkpoint_selection":"fixed final epoch before test scoring","references":"joint admissible alternatives; report action, nearest ADE/FDE, stop error and 4 s modeled clearance"},"fixed":{"initial_ego_speed_mps":7.938722239523589,"road_weather_background_cameras":"approved source unchanged","truck_front_axle_path":["55016","54224","56299"],"truck_speed_mps":5.0},"history":"Counterfactual 4-state numeric history at 2 Hz; three current RGB cameras per observation, no future camera inputs.","lengths_m":[16.1,18.1,20.1],"native_camera_contract":"drivema_navsim_multiturn_v1","observation_times_s":[-1.0,0.0,1.5,3.5],"reference_dynamics":"Constant braking after t=0; idealized acceleration discontinuity, not jerk-validated.","schema":"fluidagentic.truck_factorial.v1","source":{"anchor_timestamp":1632945457799620,"anchor_token":"dde6570e4af25bb8","dataset":"NAVSIM","log_name":"2021.09.29.19.02.14_veh-28_03198_03360","raw_sha256":"e3b9610bf9b8747b651f74dca514c85b5a5ea26c98b0ff7a3fb4e63366fec952","split":"test"},"split":{"official_source_split":"test","same_native_source_in_both":true,"scope":"Custom within-scene length-interpolation experiment; not official NAVSIM test evaluation or new-location generalization.","test_lengths_m":[18.1],"train_lengths_m":[16.1,20.1],"unit":"entire truck-length groups, including all appearances, stopping branches and temporal frames"},"stopping_point_interpretation":"Ego rear-axle X position in original anchor coordinates; ego holds through 16 s."}