Ontario Commercial Drivers License Class A Practice Test 5

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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Commercial Driver HQ

Class A Ontario Practice Test 5

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

1 / 20

If you feel sleepy while driving you should?

Pull over and rest

Sing really loud

Keep driving

Have an energy drink

2 / 20

How much space should you give a cyclist when you pass them?

Don't pass a cyclist

2 metres

1 metre

3 metres

3 / 20

A circle check is?

Drawing circles to prove you are not tired

Testing your brakes while driving in a circle

A visual check for cosmetic damage

A daily check of your vehicles roadworthiness

4 / 20

What does this sign mean?

Yield to oncoming traffic

Slow moving vehicle

This vehicle gets the right of way

Horse drawn carriage

5 / 20

How many classes of dangerous goods are there?

Ten

Six

Nine

Five

6 / 20

How do you fix a leaky glad hand?

Swap the service and supply lines

Lower pressure in the sytem

Tape the seal with duct tape

Inspect the seal for dirt and grit and replace if necessary

7 / 20

When you license is suspended you _________.

May drive only for work

Must drive with a licensed driver

Cannot drive

May drive during the day

8 / 20

How often must you inspect your commercial vehicle?

24 hours

12 hours

Every week

14 hours

9 / 20

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

20 days

7 days

30 days

90 days

10 / 20

What does this green road sign mean?

Recreation area ahead

Highway exits

Directions to nearby towns

Upcoming street names

11 / 20

Correct belt tension for an air compressor can be determined by

A karate chop

Finger pressure

Firm hand pressure

A tight squeeze of the hand

12 / 20

System air loss should be measured by applying the brake for how long?

5 minutes

2 minutes

10 minutes

1 minute

13 / 20

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

Replace the line

Cover it with tape

Leave it alone, it's fine

Turn off your air brakes

14 / 20

The supply line is also called?

The primary line

The secondary line

The emergency line

The control line

15 / 20

What does this yellow sign with a black arrow mean?

Crosswalk ahead

Exit on the right

Sharp curve in the road

Right turn lane

16 / 20

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

10 hours

12 hours

7 hours

3 hours

17 / 20

What does a trailers hand valve do?

Sends power to the left and right turn signals

Applies the trailers service brakes independently of the truck

Engages the spring brakes when the lever is pulled

Pumps up the trailers landing gear

18 / 20

Over-braking with a trailer can sometimes lead to ______.

None of these

Turbulence

Slowing down

Jack-knifing

19 / 20

Looking at your laptop while driving is _____?

Encouraged

Multi-tasking

Prohibited

20 / 20

What does this yellow diamond mean?

School bus stop ahead

Treat as a four way stop

Stop signs up ahead

Traffic lights ahead

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Your score is

The average score is 86%

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