crossing op• Data kinds: any → table
• Call: import fullseye as fs; fs.ledger.obstruction_decel(dist, speed, t_free, *, sudden: 'float' = 2.0) -> 'Dict[str, object]' (to call the implementation directly, import drivecrossing; drivecrossing.obstruction_decel(dist, speed, t_free, *, sudden: 'float' = 2.0) -> 'Dict[str, object]'; from the registry, opsdrive.get("obstruction_decel"))
> This operator's description has not been translated yet. The original text follows as it is.
交差道路の車(領域まで dist、速さ speed)が、領域に t_free より前に入らないために要る一定の減速度(閉形式、配列可)。
T = t_free。speed·T ≤ dist なら 0(減速しなくても間に合う)。T ≤ 2 dist / speed なら 2(speed·T − dist)/T²、
それより後なら speed² / (2 dist)(領域の手前で止まる)。`obstructs = 減速度 > sudden`(仮定 2.0 m/s²、
2 条 22 号「速度又は方向を急に変更しなければならない」)。dist ≤ 0(もう領域にいる)で T > 0 は ∞。
• Sample-data catalog (download URLs / licences) — 2-D uses skimage.data (BSD/public domain) plus synthetic images; 3-D lists download URLs for real data sources (Stanford, PDS, …).
• Operator provenance and references — the sources of the research/methods this op family came from.
• The canonical algorithm (author, year) and its uses are named in the family usage guide above.
• poc_driving_crossing — py -3.11 examples/poc_driving_crossing.py
table as input)course_layout · course_occupancy · course_contains · world_build · world_camera · world_move · lidar_scan · rss_longitudinal_same
crossing)crossing_timing_check · crossing_gate_state · crossing_lamp_signal · lamp_pair_phase · crossing_clear_time · exit_room_check · crossing_stop_check · track_sight_distance
*Provenance: drivecrossing.py — DRIVE operator registry. This per-op note is generated by tools/opdocs.py md (do not hand-edit).*
© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.