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BDifficulty 2/5

At the same initial speed and under the same braking conditions, if alcohol lengthens reaction time, what happens to total stopping distance?

Correct answer

It increases.

It increases because more distance is travelled before braking starts. Stopping distance is reaction distance plus braking distance; at the same speed and with the same braking conditions, a longer reaction increases the total. Alcohol can also impair attention and vehicle control; this comparison does not mean braking performance can never be affected.

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All options

  • It increases.

  • It decreases.

  • It is always identical, regardless of reaction time.

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