Quebec Commercial Drivers License Class 3 Practice Test 5

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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.

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Commercial Driver HQ

Quebec Class 3 Practice Test 5

A 20 question practice test to help prepare you for the Class 3 knowledge test in Quebec

1 / 20

What does this sign mean?

Winding road up ahead

Danger of tipping at high speeds on this corner

Road grade might vary over the next 50km

Narrow road up ahead

2 / 20

What does this speed sign mean?

The speed limit changes up ahead

The limit of cars for the bridge

The truck weight limit

The current speed limit

3 / 20

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

26 kPa/minute

32 kPa/minute

21 kPa/minute

38 kPa/minute

4 / 20

What colour will the road generally look in the winter time?

Brown from the sand and salt

None of these

Light grey with some white

Black and icy

5 / 20

What does this sign mean?

Tells you a construction zone begins in X kilometers

Travel carefully for the next X km

Tells you the speed limit in the construction zone

Tells you how many lanes in the construction zone

6 / 20

The air system pressure range must be between _________.

413 kPa (60 psi) and 828 kPa (120 psi)

690 kPa (100 psi) and 1380 kPa (200 psi)

551 kPa (80 psi) and 1000 kPa (145 psi)

483 kPa (70 psi) and 1138 kPa (165 psi)

7 / 20

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

Overextension of the brake chamber pushrod

Damp road conditions

High pressure in the compressed air tanks

Cold air temperatures

8 / 20

What is this sign used for?

Tells you which lanes to use on a given day

Tells you the time of day you can park in the area

Tells you how long you can park for

Tells you the max speed limit within a given timeframe

9 / 20

When you license is suspended you _________.

May drive during the day

May drive only for work

Cannot drive

Must drive with a licensed driver

10 / 20

Driving a commercial vehicle on the road is?

A freedom

A privilege

A right

Hard

11 / 20

System air loss should be measured by applying the brake for how long?

2 minutes

10 minutes

1 minute

5 minutes

12 / 20

If you are driving through snow and you see blue flashing lights up ahead, what do you do?

Pull over becuase it is the police

Slow down as there is an accident up ahead

Speed up to pass the slow moving lights

The blue lights are a snow plow, prepare to slow down behind it

13 / 20

What does this sign tell you about a roundabout?

The roundabout ends after the 138 east exit

Route 40 takes you to the 138 east

The destination of each of the exits

You can get to Trois-Rivieres using the 138 east or west

14 / 20

Which of these are indicators that you may have difficulty with the clearance under your vehicle?

All of the below

Road condition

Flooding

Ice

15 / 20

What is the gross weight of your vehicle?

Weight of the vehicle itself

Weight of the load and the vehicle

Weight of the driver

Weight of the load

16 / 20

Don't use the differential lock when __________?

The wheels are different

The vehicle is stopped

The wheels are spinning

Carrying a load

17 / 20

How do you define Gross Weight?

Weight of the driver

Weight of your empty vehicle

Weight of the vehicle and the load

Weight of just the load

18 / 20

Trailer air brake systems must apply a spring brake when the pressure drops below?

242 kPa (35 psi)

690 kPa (100 psi)

414 kPa (60 psi)

514 kPa (74 psi)

19 / 20

The pushrod stroke occurs when compressed air enters the?

Air compressor

Engine block

Supply tank

Brake chamber

20 / 20

What is a requirement on your daily log?

All of these

Driver name

Date

Odometer reading

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The average score is 83%

Ready to take the real knowledge test? Find out more about completing your Class 3 drivers license in Quebec

More Quebec Commercial Driving Practice Tests

Quebec Class 1 Practice Tests

Quebec Class 3 Practice Tests

Air Brakes Practice Tests

Quebec Class 4 Practice Tests

Quebec 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.