Ontario Class D Licence Test 2
- 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 June 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
Getting ready to drive a heavy truck (a truck with more than two axes) in Ontario? You'll need a Class D commercial driver's licence. The transportation industry in ON is booming, so now is a great time: heavy truck drivers are in high demand. As a Class D 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 D licence, you must pass both a written and a practical test. The written test (also known as the Ontario Class D truck driver's knowledge exam) has several multiple-choice questions. This 25-question Class D practice test is a great way to prepare: all of our questions are based on the official 2024 ON commercial driver's manual. As you answer the questions, we recommend checking the explanations 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)
- In an air brake system, what is brake lag time?
- When must you chock the wheels of your stopped vehicle?
- If your vehicle is equipped with antilock brakes (ABS), how should you brake in an emergency?
- The low air pressure warning device needs to be replaced or adjusted if it does not activate at a minimum level of
- When can your vehicle be inspected on a highway?
- When is an engine retarder most efficient?
- In an air brake system, spring brakes are intended for
- What does a driver need to transport dangerous goods?
- What does this sign mean?
- Which of the following are normal responses from an antilock braking system (ABS)?
- Who is allowed to refuel a truck hauling propane?
- What does this sign mean?
- At vehicle inspection stations, axles are inspected for
- In a vehicle equipped with air brakes, if the air pressure drops below ________, the spring brakes will begin to apply.
- What is the Gross Vehicle Weight (GVW)?
- Your vehicle is equipped with air brakes. To make sure the air tanks are securely attached to the vehicle, you should
- What does this sign mean?
- A construction worker is holding up a sign with these two sides. What do they mean?
- What is the Gross Vehicle Weight Rating (GVWR)?
- What does this sign mean?
- After loading a dump truck, what must you do before moving the vehicle?
- Before inspecting your air brakes, you should
- The braking distance of a tractor-trailer is roughly ________ as the braking distance of a car.
- What is the best way to dry out your brakes after you've driven through water?
- Your vehicle is equipped with air brakes. If the outer layer of an air line is damaged, but the inner tube is still OK, what should you do?