Ontario Air Brake Test 01

Taking the Ontario air brake practice test is a crucial step towards becoming a licensed commercial driver in the province. The test evaluates your knowledge of the mechanics and operation of air brake systems, which are essential for the safe operation of large commercial vehicles such as trucks and buses. 

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Ontario Air Brake Test 01

1 / 30

Abnormal pressure readings should always be verified by...

2 / 30

Why are air brakes used on heavy commercial vehicles?

3 / 30

Cut-out pressure is normally how much above the cut-in pressure?

4 / 30

When brakes overheat due to overuse or improper adjustment, what is it advisable to do?

5 / 30

Can brake fluid be compressed like air in air brake systems?

6 / 30

What is another name for the brake hardware used in heavy commercial vehicles?

7 / 30

What happens if there is a single malfunctioning brake?

8 / 30

What powers the air compressor?

9 / 30

The air compressor draws in air at normal pressure and does what with it?

10 / 30

Other than air brakes, what is not another type of braking system is used on commercial vehicles?

11 / 30

Brakes convert the energy of a moving vehicle into what?

12 / 30

The normal pressure range of an air brake system is determined by the points where the air compressor...

13 / 30

Do you need an air brake endorsement on your driver's licence to drive a vehicle with air parking brakes?

14 / 30

What's the purpose of the air compressor?

15 / 30

There is a split-second delay in brake reaction from the moment you apply or release the brake pedal. Is this common?

16 / 30

To stop a moving vehicle, the brake shoes or pads exert pressure on the brake drums or rotors and the resulting friction produces heat that is absorbed and dissipated where?

17 / 30

What is another phrase for when the air compressor turns on?

18 / 30

When using disc brakes, what happens when you press the brake pedal?

19 / 30

Do you need to have an air brake endorsement on your driver's licence to drive a vehicle with air-over-hydraulic brakes in Ontario?

20 / 30

What is another phrase for when the air compressor turns off?

21 / 30

Which type of vehicles use air-over hydraulic brakes

22 / 30

When you are applying for an Air Brake Endorsement on your license, what letter accompanies your license?

23 / 30

When you press the brake pedal, compressed air must travel from one part of the system to another. What ensures the air moves through the system as quickly as possible?

24 / 30

If you are driving a vehicle equipped with air brakes, do you need to understand how an air brake system works and how it compares to other vehicle braking systems?

25 / 30

What happens when brake drums overheat?

26 / 30

Normal air brake system pressure range is around...

27 / 30

Air compressors are designed to run whenever...

28 / 30

The actual air brake system pressure range must never be lower than...

29 / 30

When you press the brake pedal with drum brakes, what happens?

30 / 30

Which statement is false? Too much heat in the brake pads can create what?

Your score is

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The test consists of 30 multiple-choice questions, covering topics such as air brake system components, maintenance, safety, and emergency procedures. The Ontario Ministry of Transportation administers it and offers it for online or in-person testing at designated centers. To pass the test, you must score at least 80%. Your certification is valid for two years. It’s essential to thoroughly study and prepare for the test to ensure proficiency in air brake operation and maintenance, which contributes to road safety for all drivers. Be sure to check out this section dedicated to the Ontario Air Brake Practice Test, which is designed to cater to your specific needs.