Quebec Commercial Drivers License Class 3 Practice Test 4

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

Quebec Class 3 Practice Test 4

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

1 / 20

When going down hills you should?

Pick up speed

Shift into a higher gear

Wear your seatbelt

Shift into a lower gear

2 / 20

When can you adjust your own air brakes?

When you are on the road

If you are certified or trained

Never

If it is an emergency

3 / 20

Once you've started driving, when should you check your brakes?

Within 25 metres

Once on the road

Within 10 metres

At the stop light

4 / 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

50 kPa / minute

37 kPa / minute

5 / 20

What does this construction sign mean?

Decline coming up ahead

Drive slowly through the construction zone

Incline coming up ahead

Stop and wait for the signal to proceed

6 / 20

What is a vehicle's danger zone?

30 metres behind a commercial vehicle

A commercial vehicles blind spots plus 5 metres

The amount of distance required to stop the vehicle

20 metres around an entire commercial vehicle when moving

7 / 20

As an operator you are required to have vehicles and trailers inspected how often?

Weekly

Semi-annually

Monthly

Annually

8 / 20

What does the sign below tell you?

This road has a maximum speed limit of 40km/h at all times

When lights are flashing it is safe to cross the road

School zone. Observe the speed limit shown when the yellow lights are flashing

This is a school zone when the lights are flashing

9 / 20

Before driving down a grade (hill), you should?

Check your mirror

Choose an appropriate gear

Pick up some speed

Honk your horn

10 / 20

When is an engine retarder most efficient?

Lower RPM and higher speeds

Lower RPMs and lower speeds

High RPMs and high speeds

High RPMs and lower speeds

11 / 20

What does this sign tell you?

The speed limit is 125km/h

Maximum 125 drivers in this lane

There is a 125 tonne capacity

You are on highway 125

12 / 20

When approaching a school bus, you must stop when?

The bus is operating its alternating red lights

Only when behind the bus

If there is a stop sign

If it is at a crosswalk

13 / 20

How many hours can a commercial driver drive in one day?

13 hours

11 hours

7 hours

10 hours

14 / 20

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

Four

Five

Two

Three

15 / 20

Cut out pressure level must never exceed __________.

690 kPa (100 psi)

1000 kPa (145 psi)

1138 kPa (165 psi)

862 kPa (125 psi)

16 / 20

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

Weight of the vehicle

Weight of the driver

Driving speed

Brake adjustments

17 / 20

What is the correct use of an ABS system during a braking emergency?

Pump the brake pedal until slowed then hold the pedal

Press the pedal firmly and hold until the vehicle stops

Press the pedal 3 times until the ABS is activated

Pump the brake pedal until the vehicle stops.

18 / 20

What is this sign used for?

Tells you the max speed limit within a given timeframe

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

Tells you how long you can park for

Tells you which lanes to use on a given day

19 / 20

What does this sign warn you of?

You are crossing a runaway truck lane

The truck driver is on the run from the law

Trucks will cross-dock freight up ahead

Big hill coming up, slow down

20 / 20

What powers the air brakes air compressor system?

Overhead wires

The trucks engine

The rotation of the wheels

The battery

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 80%

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.