Yukon Knowledge Test Coach
Safe drivingQuestion 163 of 215

What does research say about driving within three hours of cannabis use?

  1. It has no effect on your risk.
  2. It raises your risk by ten per cent.
  3. It lowers your risk because you drive slower.
  4. It doubles your risk of a crash.
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Correct answer: It doubles your risk of a crash.

Cannabis harms the thinking and movement skills that you use to drive. Your crash risk doubles in the first three hours.

Source: Yukon Driver's Basic Handbook: Cars and Light Trucks (Government of Yukon, © 2022), Chapter 7, Drug impaired driving, page 101

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Questions last reviewed: 18 October 2026