Question 19 of 371 · Alberta Class 7 Knowledge Test
According to the Alberta Driver's Guide the three main factors that determine how long it takes to stop a vehicle are:
Exactly one answer is correct.
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Correct answer to question 19
- D: the driver’s perception time, reaction time and braking time
Source: Official Alberta Transportation practice question
Explanation
The time it takes to stop is made up of perception time (seeing the need to stop), reaction time (moving your foot to the brake) and braking time (the vehicle coming to a halt). The guide uses an average of three-quarters of a second for each of perception and reaction. Higher speed adds distance in every stage.
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