Compute total stopping distance combining driver reaction distance and braking distance for given speed, reaction time and deceleration.
反应距离叠加减速制动距离。
| Item | Formula / Note | Source / Standard |
|---|---|---|
| Stopping distance | d = v²/(2μg) | GB 7258-2017 |
| Reaction distance | d_r = v·t_r | traffic psychology |
| Braking standards | ≤50 m at 80 km/h | GB 21670-2008 |