Ontario Commercial Drivers License Class A Practice Test 3

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

Class A Ontario Practice Test 3

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

1 / 20

Where is the brake lining fastened?

2 / 20

Driving a commercial vehicle on the road is?

3 / 20

How do you fix a leaky glad hand?

4 / 20

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

5 / 20

Which valves are the tractor protection system?

6 / 20

What is Gross Vehicle Weight Rating?

7 / 20

If the outer layer of an airline is damaged, but the inner layer is ok, what should you do?

8 / 20

After disconnecting from a trailer, a driver should?

9 / 20

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

10 / 20

What does this yellow sign mean?

11 / 20

A sign shaped like a yellow diamond with these two narrowing lines in the middle means what?

12 / 20

Once you've started driving, when should you check your brakes?

13 / 20

What does a "No Standing" sign mean?

14 / 20

How many off-duty hours must a commercial driver have in a day?

15 / 20

When can your vehicle be inspected on a highway?

16 / 20

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

17 / 20

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

18 / 20

What does this X sign mean?

19 / 20

When you are testing your spring brakes, the test is considered a success when?

20 / 20

What must you do at a stop sign with a painted stop line?

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The average score is 84%


Want to know more? Learn all about getting your AZ 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.