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  • Based on 2025 ON commercial driver's licence manual
  • Updated for May 2025

ON General Knowledge Marathon

Driving a commercial vehicle is completely different from driving a car. Drivers must know more about their vehicles, and they need to take extra safety precautions. A commercial driver’s licence is required to drive a commercial vehicle of a certain size and weight in Canada. To obtain a commercial driver’s licence in Ontario, the driver must pass a written knowledge test and a road test. This 516-question Marathon contains all questions from our other ON General Knowledge tests. It will cycle through them until you’ve provided a correct answer to each of them. The General Knowledge Marathon is based on the 2025 Ontario commercial driver’s manual. You can also use our regular General Knowledge practice tests for ON to prepare for your test. When you’re ready, take the General Knowledge Exam Simulator.

  • Perfect for first-time and renewal commercial applicants, and those adding endorsements
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About this test

4.3 out of 5 • 10 votes
120 min to complete
Verified by Steven Litvintchouk, M.S., Chief Educational Researcher, Member of ACES. See our detailed commitment to accuracy and quality in our practice tests.
What to expect on the official exam
40

questions

32

correct answers to pass

80%

passing score

List of questions (classic view)

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