New Brunswick Commercial Drivers License Class 3 Practice Test 4

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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

New Brunswick Class 3 Practice Test 4

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

1 / 20

Spring brake controls are usually what color?

Blue

Red

Yellow

Orange

2 / 20

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

Driving the speed limit

Proper maintenance

Exceeding the vehicles weight limit

Driving too slow

3 / 20

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

Take a sip of your coffee

Come to a complete stop

Perform a rolling stop

Look quickly before proceeding

4 / 20

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

Cover it with tape

Turn off your air brakes

Leave it alone, it's fine

Replace the line

5 / 20

At vehicle inspection stations, axles are inspected for?

Condition

All of these

Brand

Spacing

6 / 20

What does this sign tell you?

Share the road with cyclists

Share the road with other drivers

All of these

Share the road with pedestrians

7 / 20

What does this yellow sign mean?

Playground area

Children crossing

Business area up ahead

Watch for pedestrians

8 / 20

What does this sign mean?

Area reserved for loading and unloading

Area reserved for vehicles parking with a valid permit

Area reserved for picking up and dropping off passengers with disabilities

Area parking for all vehicles except accessibility permit holders

9 / 20

Overheated brakes are?

Dangerously inefficient

Normal

None of these

Dangerously efficient

10 / 20

Which of these is not part of an air brake system?

Lining

Shoe

Rotors

Drum

11 / 20

Class D license holders under age 80 must pass a knowledge and vision test every?

5 Years

Year

3 Years

Never

12 / 20

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

Light grey with some white

Black and icy

Brown from the sand and salt

None of these

13 / 20

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

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 slowed then hold the pedal

Pump the brake pedal until the vehicle stops.

14 / 20

What does this sign warn you of?

The truck driver is on the run from the law

Trucks will cross-dock freight up ahead

You are crossing a runaway truck lane

Big hill coming up, slow down

15 / 20

What does this yellow sign mean?

Bike lanes ahead

Boat ramp up ahead

Snowmobiles cross this road

Snowmobile parking

16 / 20

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

Only certified technicians

Your employer

You can if you are the owner

Anyone

17 / 20

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

Road condition

Flooding

Ice

All of the below

18 / 20

If your speed increases too much while going down a hill, what should you do?

Shift to a higher gear immediately and apply firm pressure to the brake pedal until you slow down

Increase your speed even more, switch to a higher gear and lightly apply the brakes

Lightly apply the brakes to lower your speed about 10-15km/h under your safe speed and lower your main gear

Lightly press the brake pedal until the vehicle slows down to a safe speed

19 / 20

When going down hills you should?

Pick up speed

Shift into a lower gear

Shift into a higher gear

Wear your seatbelt

20 / 20

What is an ABS system?

Prevents wheel lock

Reduces stopping distance

Automatically brakes when needed

Increases braking power

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Your score is

The average score is 85%

Want to know more? Learn all about getting your Class 3 drivers license in New Brunswick

More New Brunswick Commercial Driving Practice Tests

New Brunswick Class 1 Practice Tests

New Brunswick Class 3 Practice Tests

New Brunswick Class 4 Practice Tests

Air Brakes Practice Tests

New Brunswick 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.