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 safe operation of large commercial vehicles such as trucks and buses. The test consists of 30 multiple-choice questions, covering topics such as air brakes system components, maintenance, safety, and emergency procedures. It is administered by the Ontario Ministry of Transportation and can be taken online or in-person at a designated testing center. To pass the test, you must score at least 80%, and your certification is valid for two years. It’s important to thoroughly study and prepare for the test to ensure that you are proficient in air brake operation and maintenance, which contributes to road safety for all drivers.


Ontario Air Brake Test 01

1 / 30

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

2 / 30

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

3 / 30

What happens if there is a single malfunctioning brake?

4 / 30

Normal air brake system pressure range is around...

5 / 30

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

6 / 30

Abnormal pressure readings should always be verified by...

7 / 30

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

8 / 30

Which type of vehicles use air-over hydraulic brakes

9 / 30

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

10 / 30

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

11 / 30

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

12 / 30

Air compressors are designed to run whenever...

13 / 30

What powers the air compressor?

14 / 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?

15 / 30

Brakes convert the energy of a moving vehicle into what?

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

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

19 / 30

What happens when brake drums overheat?

20 / 30

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

21 / 30

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

22 / 30

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

23 / 30

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

24 / 30

Why are air brakes used on heavy commercial vehicles?

25 / 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?

26 / 30

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

27 / 30

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

28 / 30

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

29 / 30

What's the purpose of the air compressor?

30 / 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?

Your score is