Ontario Commercial Drivers License Class D Practice Test 2

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.

Compatible on desktop, mobile, and tablet, you can take these tests anywhere you have internet access.

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Created by 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

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

2 / 20

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

3 / 20

Cut in pressure level must never fall below __________.

4 / 20

What is Gross Vehicle Weight Rating?

5 / 20

Activation of trailer spring brakes can be checked by?

6 / 20

Who can install and repair wheels and tires?

7 / 20

What does this sign mean?

8 / 20

When can your vehicle be inspected on a highway?

9 / 20

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

10 / 20

What does this yellow diamond sign mean?

11 / 20

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

12 / 20

What does this yellow diamond sign mean?

13 / 20

A circle check is?

14 / 20

What is the "cut in" level?

15 / 20

Where is the brake lining fastened?

16 / 20

What does this sign tell you about the road ahead?

17 / 20

What does this sign mean?

18 / 20

When going down hills you should?

19 / 20

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

20 / 20

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

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Your score is

The average score is 83%


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

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.