FREE MB Air Brake Practice Test 1 2025
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 May 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.
- 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?
