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Practice quizzes / Alberta Class 4 Practice Questions - Alberta Class 4 Commercial Driver's Licence Knowledge Test Exam / Question 45740
Practice question

What is the minimum legal tire tread depth for front tires on a commercial passenger vehicle in Alberta?

  1. 1.6 millimeters (1/16 inch)
  2. 3.2 millimeters (1/8 inch)
  3. 4.8 millimeters (3/16 inch)
  4. 6.4 millimeters (1/4 inch)

Answer: B — 3.2 millimeters (1/8 inch)

The correct answer is shown above. Try the full quiz for additional practice.

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