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ON Class A Commercial Licence Marathon 2025

Based on the 2025 ON CDL manual
Questions: 151
Mistakes allowed: 0
Passing score: 100%
Ensuring the accuracy and quality of our practice tests is paramount. Learn more about our rigorous standards in our Commitment to Accuracy article.

Ready for a challenge? This Marathon is a massive practice test that contains all 151 questions from our Class A Commercial Licence database for Ontario. If you select an incorrect answer, we’ll remember that question and will display it to you again at the end of the Marathon -- until you’ve answered that question correctly. In other words, the Marathon will cycle through your missed questions until you answer each one correctly. You must make a 100% to pass. We suggest you attempt this one after you have practiced the province’s regular practice tests, but before the Exam Simulator. It might take some time, but you can do this!

Based on 2025 ON commercial driver's license manual
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List of questions (classic view)
  1. A green circle
  2. What does this sign indicate?
  3. What does this road sign mean?
  4. What does the following sign mean?
  5. What does this sign mean?
  6. What does a diamond-shaped road sign mean?
  7. What does this road sign mean?
  8. What does this sign indicate?
  9. What does this road sign mean?
  10. What does this sign indicate?
  11. Vertical rectangular traffic signs generally
  12. This type of road sign can also be in what other colour?
  13. What does this sign warn you about?
  14. Which animal is featured on Northwest Territories highway route markers?
  15. What type of sign is this?
  16. You are approaching an intersection at which you want to turn left. You cannot see any other vehicles around. Do you still have to signal?
  17. Three cars arrive at a T-intersection with a stop sign. In which order should they proceed?
  18. Three cars arrive at an intersection at about the same time that a pedestrian crosses one of the roads. Who has the right-of-way here?
  19. Two cars are turning left onto a divided highway. Which cars are turning correctly?
  20. Three cars are approaching this four-way stop, one after the other. Which car should go first?
  21. You are driving this blue car on a divided highway. You approach a school bus that has stopped with flashing red lights on the opposite side of the highway. Do you have to stop here?
  22. What should you NOT do if an animal suddenly appears in front of you?
  23. When might a cyclist NOT ride as close as possible to the right curb?
  24. Which statement about the cars in this image is TRUE?
  25. What does this image illustrate?
  26. Is the blue car positioned correctly for a left turn?
  27. Two vehicles approach an intersection from different roadways at about the same time. Each vehicle encounters a stop sign. Which vehicle must yield?
  28. Under normal driving conditions, drivers of large commercial vehicles should maintain a following distance of at least
  29. Judging by the lane that the red car is in, what does the driver plan to do?
  30. Which of the following statements about sharing the road with motorcyclists are true?