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Based on 2025 ON commercial driver's licence manual
Updated for June 2025
ON Class A Commercial Licence Marathon 2025
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!
Perfect for first-time and renewal commercial applicants, and those adding endorsements
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About this test
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Verified by Steven Litvintchouk, M.S., Chief Educational Researcher, Member of ACES. See our detailed commitment to accuracy and quality in our practice tests.
Ensuring the accuracy and quality of our program is paramount. Learn more about our rigorous standards in our Commitment to Accuracy article.
List of questions (classic view)
A green circle
What does this sign indicate?
What does this road sign mean?
What does the following sign mean?
What does this sign mean?
What does a diamond-shaped road sign mean?
What does this road sign mean?
What does this sign indicate?
What does this road sign mean?
What does this sign indicate?
Vertical rectangular traffic signs generally
This type of road sign can also be in what other colour?
What does this sign warn you about?
Which animal is featured on Northwest Territories highway route markers?
What type of sign is this?
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?
Three cars arrive at a T-intersection with a stop sign. In which order should they proceed?
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?
Two cars are turning left onto a divided highway. Which cars are turning correctly?
Three cars are approaching this four-way stop, one after the other. Which car should go first?
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?
What should you NOT do if an animal suddenly appears in front of you?
When might a cyclist NOT ride as close as possible to the right curb?
Which statement about the cars in this image is TRUE?
What does this image illustrate?
Is the blue car positioned correctly for a left turn?
Two vehicles approach an intersection from different roadways at about the same time. Each vehicle encounters a stop sign. Which vehicle must yield?
Under normal driving conditions, drivers of large commercial vehicles should maintain a following distance of at least
Judging by the lane that the red car is in, what does the driver plan to do?
Which of the following statements about sharing the road with motorcyclists are true?
Our commitment to accuracy and quality in our practice tests
Explore our rigorous, multi-tiered verification process that ensures each question mirrors the official manual for unparalleled accuracy.
Written by Andrei ZakhareuskiUpdated over a week ago
At Tests.ca, we understand the importance of reliable and accurate practice tests to help you prepare for your driver's knowledge exam. That's why we've developed a meticulous process to create and continually update our practice questions, ensuring they reflect the most current driving laws and regulations.
Here's an inside look at how we maintain the highest quality in our practice tests.
Content Creation and Verification Process
Alignment with Official Driving Handbooks: Every question we develop is based on the most recent version of each province's official driving manual. Our team regularly monitors each province's official website for the latest updates to ensure our practice tests are always aligned with the most current information.
Community Feedback Integration: We leverage feedback from our vast community of users to understand which topics are most frequently tested. This helps us focus on the areas that are most relevant and beneficial for your preparation.
Expert Content Creation: Our in-house editor, Steven, who has extensive experience in driver education, crafts each question with precision. He conducts a thorough review of each question against the official manuals to ensure accuracy.
Rigorous Review Process: Once Steven has finalized a set of questions, our team conducts a joint review session. This second level of scrutiny involves content accuracy, proofreading, and fact-checking to eliminate any errors.
User Feedback Mechanism: After a question goes live on our site, we keep the lines of communication open. Each question features a feedback button, inviting users to report any issues or errors. This continuous feedback loop allows us to address and rectify any concerns promptly.
Responsive Updates: In line with our commitment to accuracy, we quickly update our practice questions to reflect any changes in the provincial government manuals. Additionally, we update the free electronic copy of the state's driver's license manuals on our site, typically within a few days after the government publishes them.
Our thorough quality control process ensures that you have access to practice tests that are as accurate and up-to-date as possible. We believe in the power of well-prepared drivers and are dedicated to providing you with the best study tools to help you succeed on your driver's knowledge exam.
Our Premium Membership comes with a Pass Guarantee (30-day access and longer). If you successfully complete all the practice tests for your province/territory, we promise you a passing grade on your official written knowledge test or we'll refund your money. Your most recent completion of all the tests should be not earlier than 30 days before your exam date.
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