All your missed questions are saved
automatically for extra practice.
It's a practice test that's automatically made up of all your missed questions. Once you finish this test, you’ll be able to revisit your Challenge Bank™ to practice and sharpen your skills.
View All PlansAdding difficult questions to Challenge Bank™ is an exclusive Premium feature. Unlock access to 270 exam-like questions, a Pass Guarantee, personalized study plans, and more.
View All Plans- Based on 2025 ON commercial driver's licence manual
- Updated for June 2025
ON Air Brake 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 669-question Marathon contains all questions from our other ON Air Brake tests. It will cycle through them until you’ve provided a correct answer to each of them. The Air Brake Marathon is based on the 2025 Ontario commercial driver’s manual. You can also use our regular Air Brake practice tests for ON to prepare for your test. When you’re ready, take the Air Brake Exam Simulator.
- Perfect for first-time and renewal commercial applicants, and those adding endorsements
- Triple-checked for accuracy
About this test
questions
correct answers to pass
passing score
List of questions (classic view)
- What does a flashing red signal light mean?
- What does a flashing amber signal light mean?
- A flashing green signal light indicates that you
- If your vehicle is skidding, you should turn the front wheels
- What should you NOT do if you find yourself skidding?
- According to the Nunavut Driver's Manual, you should place your hands on the steering wheel in what positions?
- If an emergency vehicle displaying a flashing red light or sounding a siren approaches you, what should you do?
- Before making a left turn on a two-way road, you should position your vehicle
- ________ is an area of the roadway that you can't see in your rear-view or side mirrors.
- You are not allowed to carry _______ in a trailer.
- Blind pedestrians may carry _________ canes or use the assistance of guide dogs.
- If a blind pedestrian with a guide dog is waiting at a crosswalk,
- What does this green arrow signal indicate?
- When entering a freeway, speed up to the freeway speed
- You want to pass a vehicle ahead that is stopped for a pedestrian. What should you do?
- If your vehicle stalls on the highway and you are unable to move it away from traffic, you should
- You are approaching a red light, but a police officer waves you through. What should you do?
- Are you permitted to turn right on a red signal light?
- When you see a pedestrian crossing an unmarked crosswalk where there are no traffic control signals, you should
- To make a left turn from a one-way street onto another one-way street, you should position your vehicle
- Which of the following statements about changing lanes is FALSE?
- Before changing lanes, you should
- A broken yellow line alongside a solid yellow line indicates that
- When leaving a parked position, you should
- If a tire blows out, you should NOT
- You're driving on a slippery, wet road. What is the best way to stop your vehicle if it lacks antilock brakes (ABS)?
- It is an offence to
- In this image, the white line painted across each approach lane at the intersection represents
- Upon approaching a yield sign, you should
- Snowplows are equipped with flashing _______ lights to make them more visible.
More resources
- Alberta: Test 1 / Test 2
- British Columbia: Test 1 / Test 2
- Manitoba: Test 1 / Test 2
- New Brunswick: Test 1 / Test 2
- Newfoundland and Labrador: Test 1 / Test 2
- Northwest Territories: Test 1 / Test 2
- Nova Scotia: Test 1 / Test 2
- Nunavut: Test 1 / Test 2
- Prince Edward Island: Test 1 / Test 2
- Quebec: Test 1 / Test 2
- Saskatchewan: Test 1 / Test 2
- Yukon: Test 1 / Test 2
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.
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.
Before you see your results, discover how Premium helps you:
- Real Exam-Like Ontario QuestionsQuestions match official commercial driving tests
- Interactive learningPersonal AI tutor
- 99.06% Verified Pass Rate vs. 49% AverageProven success, specialized for commercial drivers
Trusted by 14,300+ drivers