New Brunswick Commercial Drivers License Air Brakes Practice Test 3

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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 3

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

1 / 20

Which tank should be drained first when draining the air tanks on an air brake system?

2 / 20

What happens to the air valve when you press down the brake?

3 / 20

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

4 / 20

What function does the alcohol evaporator perform?

5 / 20

To make sure the air tanks are securely attached to the vehicle you should?

6 / 20

The spring brake is designed for which situation?

7 / 20

Before inspecting for air brake chamber leaks, you must __________.

8 / 20

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

9 / 20

When brakes become overheated they also become?

10 / 20

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

11 / 20

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

12 / 20

What is the service brake used for?

13 / 20

You test a tractor protection valve by removing the service line and?

14 / 20

What powers the air brakes air compressor system?

15 / 20

What should you do when the air brakes low pressure warning comes on?

16 / 20

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

17 / 20

Most air brake systems will use automatic valves to?

18 / 20

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

19 / 20

The pushrod stroke occurs when compressed air enters the?

20 / 20

Activation of trailer spring brakes can be checked by?

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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.