QC Air Brake Test 5
- Perfect for first-time and renewal commercial applicants, and those adding endorsements
- Based on 2024 QC commercial driver's licence manual
- Triple-checked for accuracy
- Updated for May 2024
About this test
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 Quebec 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.
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List of questions (classic view)
- 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?
- A drum brake system contains brake shoes with linings. What do they do?
- When your road tractor is not hitched to a semi-trailer or trailer, you should connect each brake hose coupler to
- Which is NOT a step to optimize the play or space between the linings and the drum?
- What would happen if your vehicle lacks automated self-adjusting brake levers?
- A disc brake is composed of a disc installed on the hub and brake linings (or 'pads') that are secured by what component?
- When emergency brakes are activated, the wheels equipped with brake chambers start to lock once the air pressure decreases to below what threshold?
- When you disengage the parking brake, where is the air directed?
- In comparison to drum brakes, what do disc brakes consume less of?
- The parking brake is equipped with what component, allowing for a mechanical application of the brake when the vehicle is parked?