- 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 May 2024
Verified by Steven Litvintchouk, M.S., Chief Educational Researcher, Member of ACES. See our detailed commitment to accuracy and quality in our practice tests.
About this test
Preparing to drive a semi-trailer truck or a long combination vehicle in Ontario? You'll need a Class A commercial driver's licence. The transportation industry in ON is booming, so now is a great time: truck drivers are in high demand. As a Class A licenced commercial driver, you can work for a trucking company as an employee, or for yourself as an owner-operator. But in order to drive one of the largest vehicles on the road, you must first learn to drive carefully and safely. So before you can get your Class A licence, you must pass both a written and a practical test. The written test (also known as the Ontario truck driver's knowledge exam) has several multiple-choice questions. This 50-question Class A practice test is a great way to prepare as all questions are based on the official 2024 ON commercial driver's manual. As you answer the questions, we recommend checking each question's explanation to gain some further insight into the rule behind it. Good luck and drive safely!
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)
- If your truck is transporting cargo, you must check the securement of the cargo within the first ______ of the trip.
- Driving a commercial vehicle on the road is
- What does this sign mean?
- What does this sign mean?
- What does this sign mean?
- In large commercial vehicles, most air brake systems use automatic valves to
- When uncoupling your tractor from a trailer, at what point do you lower the trailer landing gear?
- What is the first step of the pre-trip inspection?
- Which of the following are normal responses from an antilock braking system (ABS)?
- What does this sign mean?
- What does this sign mean?
- At vehicle inspection stations, axles are inspected for
- What is the Gross Vehicle Weight (GVW)?
- Your vehicle passes the tug test of the parking brakes if
- What is the "cut-in" level?
- What does a driver need to transport dangerous goods?
- When is an engine retarder most efficient?
- In determining how well your air brake system works, which is NOT a significant factor?
- Which of the following is true about B-train couplings?
- What does this sign mean?
- When can your vehicle be inspected on a highway?
- What does an ABS system do?
- What does this sign mean?
- Which parties are responsible for ensuring the correct and compliant weight of a shipment?
- What is the best way to dry out your brakes after you've driven through water?
- What is an anti-lock braking system (ABS) designed to do?
- What is the maximum legal width for a commercial motor vehicle and its cargo combined?
- How should you behave when you reach an intersection and the road leading out is blocked with traffic?
- What does this sign mean?
- Which of these items are checked during a routine truck inspection?
- The Hours of Service regulations apply to buses and to commercial vehicles whose gross weight or registered gross weight exceeds
- When is the ideal time to check if brakes are working properly?
- What type of backing up is generally the safest and easiest to execute?
- As a driver, how can you minimize the risk of hazardous incidents?
- You're uncoupling a trailer from a tractor with a fifth wheel. After lowering the landing gear, what do you do next?
- What is an essential requirement for a licensed driver seeking instruction for a commercial motor vehicle?
- If another vehicle intends to overtake and pass your vehicle, what should you do?
- What does this sign mean?
- When taking a right curve on a highway with a tractor-trailer, you should
- In case you have to cross the center line while executing a right-hand turn, you must
- What should you do if you identify a minor defect during your journey?
- What rule must you follow when driving in a roundabout?
- What does this sign mean?
- Why is it crucial to check under the hood of your truck?
- If you're required to use flares or reflectors to mark a disabled commercial vehicle on a highway, where should you place them?
- All drivers of commercial vehicles should carry the following documents with them EXCEPT
- During your daily inspection, you find and record a major defect in your vehicle. What should you do next?
- Which of these is allowed to replace a tire on a commercial motor vehicle?
- What must you track when a daily log is required?
- What is the recommended action to take before going down a steep hill?