Ontario Commercial Drivers License Class D Practice Test 2

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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

Ontario Class D Practice Test 2

A 20 question practice test to help prepare you for the Class DZ knowledge test in Ontario

1 / 20

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

All of these

Log cycle

Driver name

Where you start and end your day

2 / 20

Cut in pressure level must never fall below __________.

551 kPa (80 psi)

345 kPa (50 psi)

690 kPa (100 psi)

413 kPa (60 psi)

3 / 20

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

551 kPa (80 psi)

413 kPa (60 psi)

380 kPa (55 psi)

242 kPs (35 psi)

4 / 20

What is the "cut in" level?

The safest pressure level you can turn off the truck at

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

The maximum speed the air brakes can stop at

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

5 / 20

What does this sign mean?

Cars side by side only

Carpool lane only

Not a two lane highway

No passing

6 / 20

A circle check is?

A visual check for cosmetic damage

A daily check of your vehicles roadworthiness

Drawing circles to prove you are not tired

Testing your brakes while driving in a circle

7 / 20

Where is the brake lining fastened?

The rim of the tire

The brake shoe

The wheel well

The struts

8 / 20

What does this sign tell you about the road ahead?

Construction zone ahead

River ahead

Bridge ahead

Bumps on the pavement ahead

9 / 20

Finding a small bit of oil during an inspection is no cause for concern if its coming from the _____________?

Wheel bearings

The first tank

The second tank

Supply tank

10 / 20

When going down hills you should?

Pick up speed

Shift into a higher gear

Wear your seatbelt

Shift into a lower gear

11 / 20

What does this sign mean?

No stopping

No u-turns

One way only

No through traffic

12 / 20

When you turn 65, you now need to submit a medical report how often?

Every 2 years

Monthly

Annually

Quarterly

13 / 20

Activation of trailer spring brakes can be checked by?

Rocking the truck back and forth

Applying slight engine power

Pulling the trailer air valve

Gunning it

14 / 20

When can your vehicle be inspected on a highway?

At weight stations

Anytime

Never

During the day

15 / 20

When a school bus is stopped, how far back must you keep your vehicle?

15 metres away

5 metres away

25 metres away

20 metres away

16 / 20

What does this yellow diamond sign mean?

Right turn only

Sharp curve to the right

Winding road ahead

Slight bend in the road ahead

17 / 20

Who can install and repair wheels and tires?

Anyone

A doctor

A qualified professional

A monkey

18 / 20

What does this yellow diamond sign mean?

Divided highway ends

Divided highway begins

Narrow bridge ahead

Road construction ahead

19 / 20

What type of training do you need to operate air brakes?

Class M License

AB License

A college course

Z-endorsement

20 / 20

What is Gross Vehicle Weight Rating?

Maximum weight of the vehicle, driver, and load combined

Determines which bridges the truck can cross

The weight of the load

Maximum size of the load the truck can carry

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Your score is

The average score is 86%

Want to know more? Learn all about getting your DZ drivers license in Ontario

More Ontario Commercial Driving Practice Tests

Ontario Class A Practice Tests

Ontario Class D Practice Tests

Air Brakes Practice Tests

Ontario 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 DriveTest or the MTO. 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.