Newfoundland Commercial Drivers License Air Brakes Practice Test 2

Commercial Driver HQ is a website focused on helping new commercial drivers in all provinces and territories in Canada.

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.

Compatible on desktop, mobile, and tablet, you can take these tests anywhere you have internet access.

Take the practice test!

Created by

Commercial Driver HQ

Newfoundland Air Brakes Practice Test 2

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

1 / 20

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

Driving the speed limit

Proper maintenance

Exceeding the vehicles weight limit

Driving too slow

2 / 20

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

Yellow

Blue

Black

Red

3 / 20

What is a "glad hand"?

A coupling device

The crank for the trailer legs

A dance move

An emergency supply line

4 / 20

Cut out pressure level must never exceed __________.

1000 kPa (145 psi)

690 kPa (100 psi)

862 kPa (125 psi)

1138 kPa (165 psi)

5 / 20

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

The air valve is operated by the gas pedal

The air valve signals the compressor to turn on

The air valve closes, leaving the brake pressure the same

The air valve opens letting more air into the brakes

6 / 20

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

Press down the pedal

Twist it to the left

Twist it to the right

Pull out the control

7 / 20

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

380 kPa (55 psi)

413 kPa (60 psi)

551 kPa (80 psi)

242 kPs (35 psi)

8 / 20

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

Both of these

A service brake priority trailer

None of these

A spring brake priority trailer

9 / 20

The supply tank should discharge more moisture than any other tank?

True

False

10 / 20

When brakes become overheated they also become?

Dangerously inefficient

Extra efficient

None of the above

Very hot

11 / 20

What powers the air brakes air compressor system?

The rotation of the wheels

Overhead wires

The trucks engine

The battery

12 / 20

When inspecting an air brake system, the person inspecting should wear?

Shorts and Crocs

Dust mask, safety glasses

Sandals and shorts

Steel toe boots, safety glasses, hard hats

13 / 20

Which colour represent the trailer supply line?

White

Yellow

Red

Blue

14 / 20

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

The second air tank

The first air tank

The supply tank

The last air tank

15 / 20

What is the best way to inspect an air compressor?

With the engine on in neutral

With the engine off

With the engine on and in high gear

With the engine on in first gear

16 / 20

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

Ride the brake pedal all the time

Wear a helmet in the cab

Follow other vehicles at a safe distance

Drive on highways only

17 / 20

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

242 kPs (35 psi)

380 kPa (55 psi)

551 kPa (80 psi)

413 kPa (60 psi)

18 / 20

When you are testing your spring brakes, the test is considered a success when?

The truck can move 1.5 meters

The wheels can only turn a half revolution

The vehicle only moves slightly back and forth

The front wheels are blocked

19 / 20

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

A hearse

A compact car

A school bus

A pickup truck

20 / 20

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

26 kPa/minute

38 kPa/minute

21 kPa/minute

32 kPa/minute

Thanks for taking the practice test!

Enter your info to sign up for our mailing list or click "See Result" to move on.

NameEmail

Your score is

The average score is 79%

More Newfoundland Commercial Driving Practice Tests

Newfoundland Class 1 Practice Tests

Newfoundland Class 3 Practice Tests

Newfoundland Class 4 Practice Tests

Air Brakes Practice Tests

Newfoundland Road Signs Test

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.