- Based on 2025 MB commercial driver's licence manual
- Updated for January 2025
MB Air Brake Test 5
If you’re looking for a job in the trucking industry, completing the mandatory commercial driver’s licence knowledge exam is the first step towards achieving your dream. We have developed this 50-question Air Brake practice test to help you prepare for the province’s examination (also known as the Manitoba trucking exam). Regardless of your current level of knowledge, this test will help you brush up on some important rules. You will likely perform better on the written test if you have been studying for it, so this is why it is so important to maintain your studying regiment. Know the rules, and the road will be a much safer place. Scroll down to begin the test.
- Perfect for first-time and renewal commercial applicants, and those adding endorsements
- Triple-checked for accuracy
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More resources
- Assuming good traction and constant vehicle weight, if you double your vehicle's speed, your vehicle's braking distance will be
- Which of the following is an advantage of wedge brakes over S-cam drum brakes?
- Assuming good traction and constant vehicle speed, if you double your vehicle's weight, your vehicle's braking distance will be
- When inspecting air brakes, you should wear
- For inspecting the air brakes, when should you chock the wheels?
- How can manual slack adjusters be adjusted?
- How should you test the spring brakes?
- Brake chambers of size 36 are marked with
- __________________are conected to the brake spider in "S" cam brake system.
- Automatic slack adjusters must be inspected
- Which of the following is most likely to have air brakes?
- It is preferable to test the brakes of towing vehicle with
- An antilock braking system (ABS)
- What to do when low air warning device activates on the road?
- The spring brakes are for
- Who can adjust the air brakes?
- How can you make sure that each air tank is securely attached to the vehicle?
- What does caging a brake chamber do?
- On a tractor-trailer, the red dashboard knob controls the spring brakes on __________, and the yellow dashboard knob controls the spring brakes on _________.
- Brakes are designed to withstand temperatures of up to
- DD3 safety actuators are mostly found in
- Trailer hand valve located on the tractor dashboard used to apply
- Which of the following is not a part of a braking system?
- How many airlines go to DD3 safety actuator brake chamber?
- Easiest way to test trailer`s spring brakes is
- Which of the following is most likely to lead to brake fade?
- When inspecting the air brake chambers, what should you look for?
- Brake fade can lead to
- Under the Ontario Highway Traffic Act, how often must air brakes be inspected?
- To test the trailer's service brakes independently of the tractor's service brakes, what should you do?
- When inspecting the brake drums, you should look for
- If the low air pressure warning activates, you should
- To inspect an air brake system, you should wear
- The best way to reduce rough and abrupt braking is to
- What are the service brakes used for?
- Manufacturers recommend draining moisture and oil in an air brake system on a _______ basis.
- What is the "cut-out" level?
- What happens to the foot valve when you press down on the brake pedal?
- Why is it important to know which parts of the air brake system exhaust air?
- Which of these can strain your vehicle's braking system?
- What powers the air compressor?
- Which of these can contaminate a brake system's air lines?
- What requirements must be completed for air brake endorsement?
- Is an air brake endorsement needed on your driver's licence to operate a vehicle with air parking brakes?
- What effect does one malfunctioning brake have on the other brakes in a system?
- What proof must you provide before you can book your Class 1 road test?
- What causes a delay in the operation of the brakes when the driver presses the brake pedal?
- What are the drum or disc brakes also referred to as?
- What licence must applicants possess before they become eligible to write the air brake knowledge test?
- In brief, can you define an air brake system?
- What is the waiting period duration between the issuance date of your learner's licence and the road test date for Class 2, 3 and 4 licences?