New Brunswick Commercial Drivers License Air Brakes Practice Test 5

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Our FREE practice tests are designed to help you succeed when it comes time to write the real test.

Each license type has 5 tests to help you study and become familiar with the rules and regulations of commercial driving. The tests are not identical to the license test you will need to pass, but the questions are similar to what you will find on the real deal.

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Created by Commercial Driver HQ

New Brunswick Air Brakes Practice Test 5

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

1 / 20

The air system pressure range must be between _________.

2 / 20

Trailer air brake systems must apply a spring brake when the pressure drops below?

3 / 20

Why is it important to know where your air system releases air pressure from?

4 / 20

Which of these vehicles would usually have an air brake system?

5 / 20

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

6 / 20

When brakes become overheated they also become?

7 / 20

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

8 / 20

Cut in pressure level must never fall below __________.

9 / 20

The pushrod stroke occurs when compressed air enters the?

10 / 20

A warning system must alert the driver when the pressure drops below?

11 / 20

System air loss should be measured by applying the brake for how long?

12 / 20

Doing this will put unnecessary strain on your vehicles braking system.

13 / 20

How much air loss is allowed for a tractor and a trailer when the brakes are engaged?

14 / 20

What is a "glad hand"?

15 / 20

Spring brake controls are usually what color?

16 / 20

What is the service brake used for?

17 / 20

A commercial vehicle with air brakes engaged must not lose air pressure faster than?

18 / 20

Cut out pressure level must never exceed __________.

19 / 20

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

20 / 20

What can cause the air pressure in the air brake system to drop?

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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 the provinces or any test centres. 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.