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BDifficulty 2/5

With the same driver reaction time, what happens to the distance travelled before braking begins when speed increases?

Correct answer

Distance travelled during reaction increases.

It increases: more distance is covered at greater speed during the same interval. This does not mean speed alone automatically changes physiological reaction time. Fatigue, distraction or substances may increase that time. Excessive speed also leaves less margin to respond to danger and can lengthen braking distance.

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  • Reaction distance automatically decreases.

  • Distance travelled during reaction increases.

  • The distance depends only on the road condition and never on speed.

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