Newfoundland Commercial Drivers License Air Brakes Practice Test 4

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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

Newfoundland Air Brakes Practice Test 4

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

1 / 20

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

2 / 20

What is an ABS system?

3 / 20

If the outer layer of an airline is damaged, but the inner layer is ok, what should you do?

4 / 20

When can you adjust your own air brakes?

5 / 20

The best way to reduce rough and abrupt braking is to?

6 / 20

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

7 / 20

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

8 / 20

Which colour represent the trailer supply line?

9 / 20

Where is the brake lining fastened?

10 / 20

What is the "cut in" level?

11 / 20

Cut in pressure level must never fall below __________.

12 / 20

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

13 / 20

Where is the air pressure gauge for the air brake system?

14 / 20

You should be looking for this when checking your brake chambers?

15 / 20

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

16 / 20

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

17 / 20

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

18 / 20

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

19 / 20

What is the "cut-out" level?

20 / 20

The air system pressure range must be between _________.

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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.