Nova Scotia 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

Nova Scotia Class 3 Practice Test 4

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

1 / 20

What does this sign mean?

Watch for loose rock

Avalanche up ahead

Erosion to the west

Watch out for falling rocks

2 / 20

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

Drum

Lining

Rotors

Shoe

3 / 20

What does this sign mean?

Carpool lane only

Not a two lane highway

No passing

Cars side by side only

4 / 20

The best way to reduce rough and abrupt braking is to?

Ride the brake pedal all the time

Drive on highways only

Wear a helmet in the cab

Follow other vehicles at a safe distance

5 / 20

What is the "cut-out" level?

The maximum speed the air brakes can stop at

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

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

The safest pressure level you can turn off the truck at

6 / 20

Correct belt tension for an air compressor can be determined by

Finger pressure

A tight squeeze of the hand

A karate chop

Firm hand pressure

7 / 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

8 / 20

When curving left, what should you do to ensure the back wheels stay in your lane?

Take up both lanes to ensure safety for everyone on the road

Keep your wheels close to the centre line

Keep your front wheels as close to the right side of your lane

Keep your front wheels inside the lane to the right of you

9 / 20

Which piece of information needs to appear on your drivers log?

Log cycle

Where you start and end your day

All of these

Driver name

10 / 20

If a vehicle has an air brake defect, The Highway act states that?

The vehicle is ok to drive on any road or highway

The vehicle may operate on a road under 40km/h

The vehicle may not be operated on a road or highway

The air brake defect must be checked at the next inspection station

11 / 20

What does this sign mean?

Left turns only on weekends

Road to the left is closed during the posted times

No U-turns during the time posted

No left turns during the posted times

12 / 20

To apply for a Class D license you must be?

18 years old

16 years old

Any age

21 years old

13 / 20

What does this directional sign tell you?

This is the exit lane for the chain up area

Take this route if you want to use your chains

Truck parking and truck lock area

Exit for freight lock up area to lighten your load

14 / 20

Looking at your laptop while driving is _____?

Prohibited

Multi-tasking

Encouraged

15 / 20

What does a driver need to transport dangerous goods?

A letter

Dangerous goods

A log book

Training

16 / 20

The low air pressure warning device needs to be replaced or adjusted if it does not trigger at a minimum level of?

380 kPa (55 psi)

413 kPa (60 psi)

242 kPs (35 psi)

551 kPa (80 psi)

17 / 20

What does this sign mean?

Dead end street ahead

Slow moving vehicle ahead

Stop sign ahead. Slow down

Yield right-of-way

18 / 20

How many previous days must a drivers log keep track of?

Twenty one

Fourteen

Thirty

Seven

19 / 20

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

10 hours

13 hours

11 hours

7 hours

20 / 20

When should you be ready to stop for a school bus?

During the day

In residential areas only

School hours

Anytime

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The average score is 85%

Ready to finish earning your license? Walk through your final steps with our guide to obtaining your Class 3 license in Nova Scotia

More Nova Scotia Commercial Driving Practice Tests

Nova Scotia Class 1 Practice Tests

Nova Scotia Class 3 Practice Tests

Air Brakes Practice Tests

Nova Scotia Class 4 Practice Tests

Nova Scotia 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.