FREE Manitoba Class 3 Licence Test

Getting ready to drive a heavy truck (a truck with more than two axes) in Manitoba? You'll need a Class 3 commercial driver's licence. The transportation industry in MB is booming, so now is a great time: heavy truck drivers are in high demand. As a Class 3 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 3 licence, you must pass both a written and a practical test. The written test (also known as the Manitoba Class 3 truck driver's knowledge exam) has several multiple-choice questions. This 25-question Class 3 practice test is a great way to prepare: all of our questions are based on the official 2025 MB 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!

Perfect for first-time and renewal commercial applicants, and those adding endorsements
Triple-checked for accuracy

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.

What to expect on the official exam

questions

correct answers to pass

passing score

Helpful links

MB Driver and Vehicle Services

Official Manitoba driver's manual (2025)

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.

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List of questions (classic view)

In determining how well your air brake system works, which is NOT a significant factor?
Which colour is the trailer supply line?
When is a pre-trip inspection required?
What gauges should you check after starting your vehicle?
Why are there two service tanks in a modern air brake system?
What is the purpose of the National Safety Code?
What does this sign mean?
In Canada, how many classes of dangerous goods are there?
What must you do at a stop sign with a painted stop line?
When brakes become overheated, they also become
What does this sign mean?
Your vehicle is equipped with an air brake system, including a belt-driven air compressor. How do you check for correct belt tension?
What does this sign mean?
Before driving down a grade (hill), you should
What does this sign mean?
Your vehicle has tandem drive axles and is equipped with an inter-axle differential. You should NOT use it if
What does this sign mean?
What is a commercial vehicle's danger zone?
This sign indicates that you may park for one hour
What is the first step of the pre-trip inspection?
In a vehicle equipped with air brakes, the pushrod stroke occurs when compressed air enters the
What is the Gross Vehicle Weight Rating (GVWR)?
Driving a commercial vehicle on the road is
In an air brake system, what does a governor do?
Where are the air brake chambers located?