Ontario Commercial Drivers License Air Brakes Practice Test 3

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Created by Commercial Driver HQ

Ontario Air Brakes Practice Test 3

A 20 question practice test to help prepare you for your air brakes knowledge test in Ontario

1 / 20

What is the first thing to look at when inspecting an air brake system?

2 / 20

The full capacity of the air brake system must be available when?

3 / 20

Which colour usually means the air line is a service line?

4 / 20

Which type of trailer can be towed before the service tanks are full?

5 / 20

What might happen if the air lines are cross connected?

6 / 20

Any commercial vehicle with air brakes must not lose system pressure with the brakes applied at a rate of more than?

7 / 20

Who can perform adjustments and maintenance on your air brake system?

8 / 20

What is not a factor in how well your air brake system works?

9 / 20

Th design of the wedge brake system allows them to?

10 / 20

What is an ABS system?

11 / 20

Where are the air brake chambers located?

12 / 20

Where are the vehicles air tanks located?

13 / 20

Which statement is true of spring brakes?

14 / 20

When you are going twice the speed, your brakes will need to work ________ time harder to stop your vehicle.

15 / 20

A vehicle should have wheel chocks or blocks securing it in place during inspection if...?

16 / 20

Which of these significantly decreases the brake force produced at the wheel?

17 / 20

Spring brakes will begin to apply when the pressure starts to drop below?

18 / 20

The low air pressure warning device needs to be replaced or adjusted if it does not trigger at a minimum level of?

19 / 20

Most air brake systems will use automatic valves to?

20 / 20

What is the "cut in" level?

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We do our best to keep the questions current and accurate. The testing centres may change the questions on the knowledge tests at any time. Always be prepared for surprises.

Many of the answers to the questions can be found in the driver hand books or learning materials your province provides.

DISCLAIMER: CDHQ is not affiliated with DriveTest or the MTO. These practice tests should not be considered official tests and you are not granted a license for completing them. Our tests are simply a practice tool to help prepare yourself for the real test.