310. 停止距離
停止距離は、運転者が停止すべき理由に気づいた瞬間から車両が完全停止するまでに進む総距離です。反応距離と制動距離で構成されます。
速度が上がるほど長くなり、濡れた、凍結した、滑りやすい路面、タイヤやブレーキの不良、反応の遅れなどでも大幅に増えます。
What is the difference between reaction distance and braking distance?
Reaction distance is the distance travelled while the driver recognises a hazard and reacts. Braking distance is the distance travelled after the brakes are applied until the vehicle stops. Together they form the stopping distance.
How does speed affect stopping distance?
Higher speed increases both reaction distance and braking distance. Braking distance increases particularly quickly as speed rises, so even a relatively small increase in speed can considerably increase the distance needed to stop.
What can increase stopping distance?
Stopping distance can increase because of higher speed, wet or icy roads, worn tyres, poor brakes, downhill gradients, heavy loads and delayed driver reactions caused by fatigue, distraction, alcohol or other impairments.

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