Alberta Commercial Drivers License Air Brakes Practice Test 1

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Alberta Air Brakes Practice Test 1

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

1 / 20

Th design of the wedge brake system allows them to?

Self seal

Self isolate

Self adust

Self lubricate

2 / 20

Any commercial vehicle with air brakes must not lose system pressure with the brakes applied at a rate of more than?

21 kPa / minute

37 kPa / minute

19 kPa / minute

50 kPa / minute

3 / 20

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

You can if you are the owner

Your employer

Anyone

Only certified technicians

4 / 20

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

242 kPs (35 psi)

413 kPa (60 psi)

380 kPa (55 psi)

551 kPa (80 psi)

5 / 20

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

In city traffic

When traveling at high speed

When going downhill

At all times

6 / 20

A vehicle should have wheel chocks or blocks securing it in place during inspection if...?

The driver is not within 50 m of the vehicle

Any of these apply

The driver leaves the cab under any circumstances

The driver leaves the cab without applying the parking brake

7 / 20

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

413 kPa (60 psi)

551 kPa (80 psi)

242 kPs (35 psi)

380 kPa (55 psi)

8 / 20

Where are the vehicles air tanks located?

In the cab of the vehicle

Underneath around the frame

Inside the wheel

In the engine compartment

9 / 20

Where are the air brake chambers located?

At the front wheels

Near the compressor

At the back wheels

At each wheel

10 / 20

What is not a factor in how well your air brake system works?

Weight of the driver

Weight of the vehicle

Driving speed

Brake adjustments

11 / 20

What is the "cut in" level?

The pressure level that triggers the governor to cut off the air compressor

The pressure level that triggers the governor to turn on the air compressor

The maximum speed the air brakes can stop at

The safest pressure level you can turn off the truck at

12 / 20

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

Red

Blue

Black

Yellow

13 / 20

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

Three

Four

Five

Two

14 / 20

Most air brake systems will use automatic valves to?

Increase pressure at the front wheels

Increase pressure at the back wheels

Reduce pressure at the front wheels

Reduce pressure at the back wheels

15 / 20

What is an ABS system?

Prevents wheel lock

Automatically brakes when needed

Reduces stopping distance

Increases braking power

16 / 20

Which statement is true of spring brakes?

They are as strong as service brakes

They can be used in lieu of service brakes

They are not as strong as service brakes

They are stronger than service brakes

17 / 20

What might happen if the air lines are cross connected?

The towing vehicle will lose air

The service brakes will not function correctly

Any of these

The spring brakes won't work

18 / 20

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

The foundation brake components

The air lines

The air compressor

The pressure gauge

19 / 20

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

None of these

A service brake priority trailer

Both of these

A spring brake priority trailer

20 / 20

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

Cold air temperatures

Overextension of the brake chamber pushrod

Damp road conditions

High pressure in the compressed air tanks

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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.