Class 7 Coach
Safe drivingQuestion 165 of 235

A driver moves a foot from the accelerator to the brake pedal. How long does this take on average?

  1. Three-quarters of a second.
  2. One and a half seconds.
  3. One-quarter of a second.
  4. Two seconds.
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Correct answer: Three-quarters of a second.

This time is called reaction time. The average is three-quarters of a second. The vehicle keeps moving during this time.

Source: Driver’s Guide: Cars and Light Trucks (Government of Alberta, Spring 2026), Stopping time and distance, page 52

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Questions last reviewed: 18 October 2026