occlusion_safe_speed — DRIVE traffic op

• Data kinds: any → any

• Call: import fullseye as fs; fs.ledger.occlusion_safe_speed(d, *, reaction: 'float', brake: 'float') (to call the implementation directly, import drivetraffic; drivetraffic.occlusion_safe_speed(d, *, reaction: 'float', brake: 'float'); from the registry, opsdrive.get("occlusion_safe_speed"))

Usage

> This operator's description has not been translated yet. The original text follows as it is.

見えた瞬間から距離 d 以内に止まれる最大速度 v = b(−ρ + sqrt(ρ² + 2d/b))。

v ρ + v²/(2b) = d(空走 + 制動。`rsssafety.rss_stopping_distance(v, ρ, accel=0, brake=b)` と同じ式)を v について

解いた正の根。桁落ちを避けて v = 2d / (ρ + sqrt(ρ² + 2d/b)) で計算する(ρ = 0 で sqrt(2 b d))。

d は配列でもよい。d ≤ 0 なら 0(見えた時には既に間に合わない)。

門: `rss_stopping_distance(v, ρ, 0, b)` == d(第 2 実装、rtol 1e-12)。

Raises `ValueError`: reaction < 0、brake ≤ 0、d が非有限(inf は許して inf を返す)。

References (sample data, literature)

• 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.

Runnable examples (verified samples that actually call this op)

• poc_driving_traffic — py -3.11 examples/poc_driving_traffic.py

Ops the type connects to (they accept any as input)

course_crank · course_s_curve · course_turnaround · course_slope · course_intersection · course_parallel_parking · course_crossing · course_road

Same category (traffic)

idm_accel · idm_equilibrium_gap · idm_platoon_simulate · driver_style · lateral_wobble · ou_estimate · social_force_step · pedestrian_crossing


*Provenance: drivetraffic.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.