ON Air Brake Test 10
- Perfect for first-time and renewal commercial applicants, and those adding endorsements
- Based on 2024 ON commercial driver's licence manual
- Triple-checked for accuracy
- Updated for December 2024
This test is a Premium member exclusive. You'll get
What you need to know
Verified by Steven Litvintchouk, M.S., Chief Educational Researcher, Member of ACES. See our detailed commitment to accuracy and quality in our practice tests.
Welcome to Ontario Commercial Air Brake Test 10. This exam will guide you through air brake components with 50 questions. Equip yourself with the knowledge you need to pass the official exam the first time around.
What to expect on the official exam
50
questions
40
correct answers to pass
80
passing score
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 Zakhareuski Updated 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.
List of questions (classic view)
- Why are automatic slack adjusters utilized?
- As brakes wear naturally, what happens to the brake pushrod stroke?
- An air dryer purge occurs at about the same time as
- What is the most distinct and permanent feature used to identify long-stroke brake chambers?
- Which is not correct? During a brake adjustment inspection, you should mark the pushrod at the brake chamber or a suitable fixed reference point with...
- When testing the low-air warning system, how often should you engage and disengage the brake pedal?
- Given that adjustment limits depend on the size and type of air-brake chamber, what do you need to identify?
- What happens when brakes with manual slack adjusters are improperly adjusted?
- When conducting a vehicle inspection, why is it advisable to park on level ground?
- Which statement is not true? Long-stroke brake chambers can be identified by...
- How far should you drain the air supply tank while inspecting the air-tank drain valves?
- The pushrod stroke of each air brake chamber should not exceed...
- When measuring the air-loss rate, why should the initial drop in pressure be ignored?
- How many methods are there to measure the applied pushrod stroke?
- When does a vehicle fail the air-tank drain valves test?
- When inspecting brake adjustment, how should the pushrod marks be?
- In Ontario, who is qualified to re-adjust manual slack adjusters?
- Brake wear occurs at different rates depending on...?
- To bring a vehicle to a halt in the same distance when its weight has been doubled, the braking force should be what?
- What powers the compressor in a vehicle's air brake system?
- Where does a compressor pump the air in a vehicle's braking system?
- What is leveraged to gain a mechanical advantage in a braking system?
- What causes the wheels to stop spinning in a braking system?
- What could result from improperly adjusted brakes on one or two wheels of a vehicle?
- What influences the distance needed to bring a vehicle to a complete stop?
- What is the device that provides compressed air in a brake system known as?
- What is a common device used to obtain a mechanical advantage in braking systems?
- If a vehicle's compressor is belt-driven, what should you inspect the belts for?
- What term is used to denote air that has been forced into a smaller space?
- What is transmitted through an air brake system using compressed air?
- Where does the heat generated from the friction between brake drums and linings go?
- Which statement is untrue about the stopping distance?
- In an air brake system, what does the unloading stage signify?
- If a vehicle's speed is doubled, by how much must the braking force be increased to stop in the same distance?
- What is the optimal operating temperature for most brake linings?
- Approximately how long does it take from identifying a hazard to applying the brakes?
- What is the maximum operating temperature for most brake linings?
- Above what pressure will the compressor not have to pump air in the system?
- The compressor must start pumping air into the system by the time that air pressure falls to
- Which of the following is not one of the main components in a basic air brake system capable of stopping a vehicle?
- Overheating in brakes could lead to what adverse condition?
- When both the weight and speed of a vehicle are doubled, the braking force must be adjusted by what factor to stop in the same distance?
- What term is used to describe the time taken for air to travel through a properly maintained air brake system?
- When brakes generate heat, where does this heat eventually go?
- Which component controls when the compressor pumps air by monitoring the minimum and maximum air pressure in the system?
- What does the friction between brake drums and linings produce in a braking system?
- What is the determining factor for the amount of heat the brake drums can absorb?
- What does the term loading stage signify in an air brake system?
- Why is the sensation different when operating air treadles compared to hydraulic brakes?
- What is the consequence of not maintaining slack adjusters within their specified limits?