Newfoundland 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

Newfoundland Class 3 Practice Test 5

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

1 / 20

What is the "cut-out" level?

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

The safest pressure level you can turn off the truck at

The maximum speed the air brakes can stop at

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

2 / 20

What does this sign tell you?

Always use winter tires or chains

Loose gravel ahead

Carry chains or use winter tires during these dates

Happy Halloween!

3 / 20

Th design of the wedge brake system allows them to?

Self isolate

Self adust

Self seal

Self lubricate

4 / 20

What does this sign tell you?

Tells you brake check area is coming up

This is the exit for the brake check area

This is the exit for a parking area to take a break in

Exit sign for the town Brake Check

5 / 20

A circle check is?

A daily check of your vehicles roadworthiness

Testing your brakes while driving in a circle

A visual check for cosmetic damage

Drawing circles to prove you are not tired

6 / 20

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

10 hours

13 hours

11 hours

7 hours

7 / 20

To apply for a Class D license you must be?

21 years old

18 years old

Any age

16 years old

8 / 20

What does this yellow sign with a black arrow mean?

Sharp curve in the road

Crosswalk ahead

Exit on the right

Right turn lane

9 / 20

What does this yellow sign mean?

Pavement ends in right lane

Pedestrian crossing up ahead

The right lane ends up ahead

Left lane ends up ahead

10 / 20

The tallest your vehicle can be is?

4.15 m

3.75 m

5.00 m

5.30 m

11 / 20

If the outer layer of an airline is damaged, but the inner layer is ok, what should you do?

Cover it with tape

Leave it alone, it's fine

Turn off your air brakes

Replace the line

12 / 20

What does this sign mean?

Share the road with cyclists

All of these

Share the road with pedestrians

Share the road with other drivers

13 / 20

What does a governor do in an air brake system?

Regulates the tire pressure

Regulates the air pressure

Tells the other brakes what do to

Limits the speed by using automatic braking

14 / 20

How often must you inspect your commercial vehicle?

12 hours

14 hours

Every week

24 hours

15 / 20

What must you do at a stop sign with a painted stop line?

Take a sip of your coffee

Perform a rolling stop

Look quickly before proceeding

Come to a complete stop

16 / 20

Which belt should you check during your pre-trip inspection?

All of these

Water pump belt

Power steering belt

Alternator belt

17 / 20

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

True

False

18 / 20

The air system pressure range must be between _________.

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

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

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

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

19 / 20

When going down hills you should?

Shift into a lower gear

Pick up speed

Wear your seatbelt

Shift into a higher gear

20 / 20

What is a normal reaction time for a driver?

1.5 seconds

1 second

.75 seconds

2 seconds

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Your score is

The average score is 85%

What are the next steps to getting your truck license? Learn how to earn your Class 3 drivers license in Newfoundland

More Newfoundland Commercial Driving Practice Tests

Newfoundland Class 1 Practice Tests

Newfoundland Class 3 Practice Tests

Newfoundland Class 4 Practice Tests

Air Brakes Practice Tests

Newfoundland 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.