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

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

The air compressor

The air lines

The foundation brake components

The pressure gauge

2 / 20

What is the "cut in" level?

The maximum speed the air brakes can stop at

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 safest pressure level you can turn off the truck at

3 / 20

Most air brake systems will use automatic valves to?

Reduce pressure at the back wheels

Increase pressure at the front wheels

Reduce pressure at the front wheels

Increase pressure at the back wheels

4 / 20

What might happen if the air lines are cross connected?

The spring brakes won't work

The service brakes will not function correctly

The towing vehicle will lose air

Any of these

5 / 20

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

Five

Four

Three

Two

6 / 20

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

Anyone

Your employer

Only certified technicians

You can if you are the owner

7 / 20

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

19 kPa / minute

21 kPa / minute

37 kPa / minute

50 kPa / minute

8 / 20

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

242 kPs (35 psi)

413 kPa (60 psi)

551 kPa (80 psi)

380 kPa (55 psi)

9 / 20

Where are the air brake chambers located?

At the back wheels

Near the compressor

At the front wheels

At each wheel

10 / 20

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

551 kPa (80 psi)

413 kPa (60 psi)

242 kPs (35 psi)

380 kPa (55 psi)

11 / 20

What is an ABS system?

Prevents wheel lock

Reduces stopping distance

Automatically brakes when needed

Increases braking power

12 / 20

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

The driver leaves the cab without applying the parking brake

The driver is not within 50 m of the vehicle

Any of these apply

The driver leaves the cab under any circumstances

13 / 20

Th design of the wedge brake system allows them to?

Self adust

Self isolate

Self seal

Self lubricate

14 / 20

Which statement is true of spring brakes?

They are stronger than service brakes

They can be used in lieu of service brakes

They are as strong as service brakes

They are not as strong as service brakes

15 / 20

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

Overextension of the brake chamber pushrod

Damp road conditions

Cold air temperatures

High pressure in the compressed air tanks

16 / 20

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

When traveling at high speed

At all times

In city traffic

When going downhill

17 / 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

18 / 20

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

Brake adjustments

Driving speed

Weight of the vehicle

Weight of the driver

19 / 20

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

Red

Black

Yellow

Blue

20 / 20

Where are the vehicles air tanks located?

In the cab of the vehicle

In the engine compartment

Underneath around the frame

Inside the wheel

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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.