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View All Plans- Based on 2025 MB commercial driver's licence manual
- Updated for August 2025
FREE MB Air Brake Practice Test 1
Driving conditions in Manitoba can be tough in winter. You might be driving down a steep hill on Highway 10 near Riding Mountain National Park when ice or snow has increased your vehicle’s braking distance. Or you might be driving on an icy stretch of Highway 6 on a winter night when a moose suddenly crosses the road ahead of you. Good brakes are crucial in situations like these.
To drive commercial vehicles with air brakes on Manitoba’s public roads, you must obtain an air brake endorsement on a commercial driver’s licence (Class 1, 2, or 3). To do this, you must meet a series of requirements. First, what are some requirements for a commercial licence?
To learn to operate any class of commercial vehicle, you must obtain Authorized Instruction, which will allow you to practice commercial driving under supervision. To get this credential, you must hold a Class 5 licence and pass a knowledge test that’s appropriate for the class of commercial licence you’re applying for. The knowledge test covers the basics of operating such vehicles.
You must hold this credential for at least two weeks. Once you feel ready, you can book a road test for a commercial driver’s licence. You must take the road test in a vehicle that’s consistent with the class of licence you’re applying for. However, for a Class 1 licence, you must complete Mandatory Entry-Level Training (MELT) before taking the road test.
To get the air brake endorsement, you must complete an approved Air Brake course (typically one or two days), pass an air brake written knowledge test, and pass an air brake practical test. The air brake knowledge test will evaluate your understanding of air brake theory. The air brake practical test will assess your ability to conduct a pre-trip inspection of your vehicle’s air braking system.
In Manitoba, the official commercial driver’s reference for air brakes is Manitoba Public Insurance’s Air Brake Manual. However, air brake theory is challenging to master just by reading about it or taking a short course. We offer fourteen practice tests to reinforce and enhance your knowledge of the subject through intensive repetition.
This is the first of our Manitoba Air Brake practice tests. It’s up to date as of August 2025 and based on the official Air Brake Manual. Our AI Assistant can help you with any question by supplying a hint or rephrasing the question. You can even ask it questions about any aspect of commercial driving.
- Perfect for first-time and renewal commercial applicants, and those adding endorsements
- Triple-checked for accuracy
What you need to know
More resources
- 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
- Ontario: 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
- Should you pump (keep pressing and releasing) air brakes?
- It is important to keep compressed air as dry as possible because
- What does the low air pressure warning device warn you about?
- If the low air pressure warning signal comes on, what should you do?
- The effectiveness of the spring brakes for emergencies or parking
- During normal driving, what keeps the spring brakes released?
- Assuming good traction and constant vehicle weight, if you double your speed, your vehicle's braking distance will be
- If drum brakes overheat, the vehicle's stopping distance will increase. What is the reason for this?
- Air braking systems tend to react slower than hydraulic braking systems because
- While travelling downhill, you notice that each time you want to brake, you must press the brake pedal farther down than the last time to achieve the same braking force. What could be causing this?
- The maximum air pressure available for braking is determined by
- The foot (treadle) valve
- Which of the following can impair braking effectiveness?
- After you apply the service brakes, what happens to that compressed air?
- What does an alcohol evaporator do?
- When you test the system air-loss rate, the maximum acceptable leakage rates per minute after the initial drop are
- You're driving a vehicle equipped with a dual air brake system. The low air pressure warning signal comes on, but one system still has normal pressure. What should you do?
- How should you test your vehicle's low air pressure warning signal?
- An application pressure gauge shows the air pressure
- All vehicles equipped with air brakes must have
- What is the colour coding that is often used for the supply and service lines to the trailer?
- The hand valve of a tractor-trailer
- In a vehicle equipped with air brakes, what does the governor control?
- Polarized gladhands on a tractor
- ln vehicles with three dash-mounted push-pull valve knobs, how are the valve knobs usually coloured?
- Which of the following are major components of the air supply circuit?
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.
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- Real Exam-Like Manitoba QuestionsQuestions match official commercial driving tests
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