New Brunswick 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

New Brunswick Air Brakes Practice Test 4

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

1 / 20

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

2 / 20

What function does the alcohol evaporator perform?

3 / 20

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

4 / 20

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

5 / 20

How do you engage the emergency / parking brake on most air brake systems?

6 / 20

What is the best way to inspect an air compressor?

7 / 20

Where is the brake lining fastened?

8 / 20

Activation of trailer spring brakes can be checked by?

9 / 20

What might happen if the air lines are cross connected?

10 / 20

If brake chambers on opposite side of an axle are different sizes, this may cause?

11 / 20

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

12 / 20

What powers the air brakes air compressor system?

13 / 20

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

14 / 20

The spring brake is designed for which situation?

15 / 20

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

16 / 20

When can you adjust your own air brakes?

17 / 20

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

18 / 20

What is the most frequent reason a vehicle is removed from service?

19 / 20

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

20 / 20

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

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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.