New Brunswick Commercial Drivers License Class 3 Practice Test 1

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.

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Commercial Driver HQ

New Brunswick Class 3 Practice Test 1

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

1 / 20

How often must you inspect your commercial vehicle?

Every week

24 hours

14 hours

12 hours

2 / 20

How many classes of dangerous goods are there?

3 / 20

What does this no parking sign mean?

This parking area is for fired people

No parking in the area between the signs because this is a fire route

Fire trucks not allowed to park between signs

No parking, this is a loading zone

4 / 20

What is a normal reaction time for a driver?

.75 seconds

1 second

2 seconds

1.5 seconds

5 / 20

Spring brakes will begin to apply when the pressure starts to drop below?

551 kPa (80 psi)

242 kPs (35 psi)

413 kPa (60 psi)

380 kPa (55 psi)

6 / 20

What does this sign mean?

No u-turns

No stopping

No through traffic

One way only

7 / 20

If you drive past a weight station, how many days can your license be suspended for?

7 days

90 days

30 days

20 days

8 / 20

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

514 kPa (74 psi)

690 kPa (100 psi)

414 kPa (60 psi)

242 kPa (35 psi)

9 / 20

What is the maximum length for a straight truck?

12.5 metres (41 feet)

9.5 metres (31 feet)

10 metres (33 feet)

11 metres (36 feet)

10 / 20

What does this rectangle sign mean?

No right turns on a red light

Do not turn right

Only right turns allows

No stopping if turning right

11 / 20

A warning system must alert the driver when the pressure drops below?

551 kPa (80 psi)

413 kPa (60 psi)

380 kPa (55 psi)

242 kPs (35 psi)

12 / 20

Read tire tread depth must be more than ______.

1.5mm

3mm

1mm

8mm

13 / 20

How much air loss is allowed for a tractor and a trailer when the brakes are engaged?

34 kPa/minute

32 kPa/minute

28 kPa/minute

26 kPa/minute

14 / 20

Cut out pressure level must never exceed __________.

690 kPa (100 psi)

862 kPa (125 psi)

1138 kPa (165 psi)

1000 kPa (145 psi)

15 / 20

How much stopping distance does a truck need compared to a normal car?

2 times as much

6 times as much

10 times as much

3 times as much

16 / 20

What does this white sign mean?

This lane is for public or passenger vehicles with more than two occupants

The white lane is for loading and unloading only

All buses must be followed by 2 cars in this lane

Only buses and Uber or Lyft drivers in this lane

17 / 20

The tallest your vehicle can be is?

5.00 m

5.30 m

4.15 m

3.75 m

18 / 20

What does this yellow sign mean?

Divided highway ends, keep to the right

Winding road up ahead

One way road ahead

Road narrows up ahead

19 / 20

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

32 kPa/minute

21 kPa/minute

26 kPa/minute

38 kPa/minute

20 / 20

Who can install and repair wheels and tires?

Anyone

A doctor

A monkey

A qualified professional

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Your score is

The average score is 77%

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.