PEI Commercial Drivers License Air Brakes Practice Test 1

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PEI Air Brakes Practice Test 1

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

1 / 20

Spring brake controls are usually what color?

Red

Blue

Yellow

Orange

2 / 20

Most air brake systems will use automatic valves to?

Increase pressure at the back wheels

Reduce pressure at the back wheels

Increase pressure at the front wheels

Reduce pressure at the front wheels

3 / 20

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

413 kPa (60 psi)

551 kPa (80 psi)

242 kPs (35 psi)

380 kPa (55 psi)

4 / 20

Which can contaminate a brake systems air lines?

Dust

Grease and oil

Water and salt

Dirt

5 / 20

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

False

True

6 / 20

The spring brake is designed for which situation?

Loading skids into the trailer

Parking and emergencies

Skids and emergencies

Skids and parking

7 / 20

Activation of trailer spring brakes can be checked by?

Gunning it

Pulling the trailer air valve

Applying slight engine power

Rocking the truck back and forth

8 / 20

When inspecting your brakes, you must?

Block the truck with wheel chocks

Apply spring brakes

All of these

Drive the vehicle to level ground

9 / 20

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

When going downhill

In city traffic

At all times

When traveling at high speed

10 / 20

Finding a small bit of oil during an inspection is no cause for concern if its coming from the _____________?

Supply tank

Wheel bearings

The first tank

The second tank

11 / 20

Th design of the wedge brake system allows them to?

Self isolate

Self seal

Self adust

Self lubricate

12 / 20

What might happen if the air lines are cross connected?

The spring brakes won't work

The towing vehicle will lose air

The service brakes will not function correctly

Any of these

13 / 20

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

Overextension of the brake chamber pushrod

High pressure in the compressed air tanks

Cold air temperatures

Damp road conditions

14 / 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

15 / 20

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

Pull on them

Tap on them

Inspect them

Drive at full speed

16 / 20

Manufactures recommend draining moisture and oil in an air system on a _______ basis.

Weekly

Monthly

Quarterly

Daily

17 / 20

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

The first air tank

The supply tank

The last air tank

The second air tank

18 / 20

What is the "cut in" level?

The maximum speed the air brakes can stop at

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

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

The safest pressure level you can turn off the truck at

19 / 20

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

380 kPa (55 psi)

413 kPa (60 psi)

551 kPa (80 psi)

242 kPs (35 psi)

20 / 20

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

Driving too slow

Driving the speed limit

Exceeding the vehicles weight limit

Proper maintenance

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More PEI Commercial Driving Practice Tests

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PEI Class 3 Practice Tests

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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.