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BDifficulty 2/5

For a hazard requiring braking, which interval is called the driver’s reaction time?

Correct answer

From perceiving the hazard until beginning to apply the brake.

The interval from perceiving the hazard until beginning to apply the brake. During that interval, the vehicle continues travelling the reaction distance. The time from the start of braking until stopping is a different interval; reaction time is also not the entire stopping time from perceiving danger. It varies with attention, fatigue, alcohol and other factors, so no fixed interval is guaranteed for everyone.

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  • From the start of braking until the vehicle stops.

  • The entire time from perceiving danger until the vehicle stops.

  • From perceiving the hazard until beginning to apply the brake.

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