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

10 times as much

2 times as much

6 times as much

3 times as much

2 / 20

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

26 kPa/minute

32 kPa/minute

21 kPa/minute

38 kPa/minute

3 / 20

What is the maximum length for a straight truck?

12.5 metres (41 feet)

10 metres (33 feet)

9.5 metres (31 feet)

11 metres (36 feet)

4 / 20

What does this white sign mean?

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

Only buses and Uber or Lyft drivers in this lane

All buses must be followed by 2 cars in this lane

The white lane is for loading and unloading only

5 / 20

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

242 kPs (35 psi)

551 kPa (80 psi)

380 kPa (55 psi)

413 kPa (60 psi)

6 / 20

Read tire tread depth must be more than ______.

3mm

1mm

1.5mm

8mm

7 / 20

What does this sign mean?

One way only

No u-turns

No stopping

No through traffic

8 / 20

What does this rectangle sign mean?

Only right turns allows

No right turns on a red light

Do not turn right

No stopping if turning right

9 / 20

Who can install and repair wheels and tires?

Anyone

A monkey

A doctor

A qualified professional

10 / 20

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

242 kPa (35 psi)

690 kPa (100 psi)

414 kPa (60 psi)

514 kPa (74 psi)

11 / 20

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

90 days

7 days

20 days

30 days

12 / 20

How many classes of dangerous goods are there?

13 / 20

What is a normal reaction time for a driver?

1.5 seconds

2 seconds

.75 seconds

1 second

14 / 20

Cut out pressure level must never exceed __________.

690 kPa (100 psi)

1000 kPa (145 psi)

862 kPa (125 psi)

1138 kPa (165 psi)

15 / 20

The tallest your vehicle can be is?

5.00 m

5.30 m

4.15 m

3.75 m

16 / 20

How often must you inspect your commercial vehicle?

14 hours

24 hours

Every week

12 hours

17 / 20

What does this yellow sign mean?

One way road ahead

Road narrows up ahead

Winding road up ahead

Divided highway ends, keep to the right

18 / 20

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

32 kPa/minute

26 kPa/minute

34 kPa/minute

28 kPa/minute

19 / 20

What does this no parking sign mean?

No parking, this is a loading zone

Fire trucks not allowed to park between signs

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

This parking area is for fired people

20 / 20

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

380 kPa (55 psi)

413 kPa (60 psi)

551 kPa (80 psi)

242 kPs (35 psi)

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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.