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BDifficulty 2/5

For an obstacle requiring braking, what is the distance travelled from perceiving it until beginning to apply the brake called?

Correct answer

Reaction distance.

Reaction distance. It is travelled while the driver perceives the situation and reacts, before beginning to brake. Braking distance follows, from applying the brake until stopping. Their sum is stopping distance; braking must not be included within reaction distance.

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  • Total stopping distance.

  • Braking distance.

  • Reaction distance.

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