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.

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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

What does this yellow sign with a black arrow mean?

Sharp curve in the road

Right turn lane

Exit on the right

Crosswalk ahead

2 / 20

What does this green road sign mean?

Upcoming street names

Highway exits

Recreation area ahead

Directions to nearby towns

3 / 20

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

12 hours

3 hours

7 hours

10 hours

4 / 20

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

Turn off your air brakes

Leave it alone, it's fine

Cover it with tape

Replace the line

5 / 20

The supply line is also called?

The emergency line

The primary line

The control line

The secondary line

6 / 20

When you license is suspended you _________.

Cannot drive

Must drive with a licensed driver

May drive during the day

May drive only for work

7 / 20

A circle check is?

Drawing circles to prove you are not tired

A daily check of your vehicles roadworthiness

A visual check for cosmetic damage

Testing your brakes while driving in a circle

8 / 20

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

3 metres

2 metres

1 metre

Don't pass a cyclist

9 / 20

How often must you inspect your commercial vehicle?

Every week

12 hours

14 hours

24 hours

10 / 20

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

1 minute

10 minutes

5 minutes

2 minutes

11 / 20

How do you fix a leaky glad hand?

Tape the seal with duct tape

Inspect the seal for dirt and grit and replace if necessary

Lower pressure in the sytem

Swap the service and supply lines

12 / 20

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

None of these

Turbulence

Jack-knifing

Slowing down

13 / 20

Looking at your laptop while driving is _____?

Prohibited

Encouraged

Multi-tasking

14 / 20

What does this yellow diamond mean?

Traffic lights ahead

Stop signs up ahead

Treat as a four way stop

School bus stop ahead

15 / 20

Correct belt tension for an air compressor can be determined by

Finger pressure

Firm hand pressure

A karate chop

A tight squeeze of the hand

16 / 20

If you feel sleepy while driving you should?

Pull over and rest

Have an energy drink

Sing really loud

Keep driving

17 / 20

What does a trailers hand valve do?

Applies the trailers service brakes independently of the truck

Pumps up the trailers landing gear

Sends power to the left and right turn signals

Engages the spring brakes when the lever is pulled

18 / 20

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

30 days

20 days

90 days

7 days

19 / 20

What does this sign mean?

Yield to oncoming traffic

This vehicle gets the right of way

Slow moving vehicle

Horse drawn carriage

20 / 20

How many classes of dangerous goods are there?

Six

Five

Ten

Nine

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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.