Canada Exam Prep
All Ontario practice tests

AZ Practice Test Ontario 2026 – Free Ontario Class A (AZ) Questions

Original questions written from the official Ontario handbook, with an explanation for every answer.

By the ·

  • 272 questions
  • 7 practice tests
0/40
Practice test 1 · Question 1Score 0/0

Which vehicle's driver is exempt from the hours-of-service rules?

Your progress

Your topic map

Every Ontario Class A (AZ) topic, coloured by how well your answers show you know it. Saved in this browser only – no account.

Your map fills in as you practise

Answer questions in any practice test, topic quiz, mock exam or the exam simulator. After 5 answers in a topic, it turns red, yellow or green.

Start practice test 1

Your map is saved in this browser only – no account needed.

Estimated mock score

Estimate only – not an official prediction

Answer at least 20 questions to see an estimated mock score (you have 0). It is shown as a range, never as a promise.

Colours summarize progress from your recent practice answers: red suggests more practice, yellow shows progress, and green shows stronger recent performance. Grey means fewer than 5 answers so far. These indicators do not predict official exam results.

Keep practising

All Ontario Class A (AZ) practice tests

7 sets of 40 questions. Each set is fixed, so you can repeat it until you score 100%.

Exam facts

Key facts: Ontario Class A (AZ) Truck Knowledge Test

Free Ontario AZ practice tests for the Class A tractor-trailer knowledge test, written from the Official MTO Truck Handbook. Every question is original, explains the rule behind the answer and cites the handbook page it comes from. No sign-up, no paywall, and your progress stays on your device.

The Class A knowledge test is the written test you pass before MELT training and the AZ road test. This bank leans on what is specific to tractor-trailers: coupling and uncoupling, combination braking and jackknife control, semi-trailer off-tracking, size and weight limits, cargo securement and hours of service, plus the shared rules every truck driver must know.

What the test covers

Topics and question bank

Every question is tagged to one topic from the official handbook. Pick a topic to drill just that area.

Try a few

Sample Ontario Class A (AZ) questions

Tap a question to see the answer. The full interactive test is at the top of the page.
  1. 1Which vehicle's driver is exempt from the hours-of-service rules?
    • A. A tow truck
    • B. A loaded dump truck
    • C. A tractor-trailer hauling freight
    • D. A school bus

    Tow trucks are on the exemption list, along with motor homes, ambulances, fire apparatus and some others.

  2. 2What is the time limit for the backing manoeuvre?
    • A. Less than 3 minutes
    • B. No time limit
    • C. Less than 10 minutes
    • D. Less than 20 minutes

    You must complete the backing in less than 10 minutes.

  3. 3Which vehicle may a Class A licence holder NOT drive?
    • A. A tractor with a flatbed semi-trailer
    • B. A pick-up towing a 5,000 kg trailer
    • C. A bus carrying passengers
    • D. A dump truck over 11,000 kg

    Class A does not allow a bus carrying passengers, a motorcycle or a moped. Heavy trucks and tractor-trailers are covered.

  4. 4Mirrors are left out of the width measurement if they stick out no more than what on each side?
    • A. 1 m
    • B. 50 cm
    • C. 10 cm
    • D. 30 cm

    Mirrors are not counted in width if they extend no more than 30 cm beyond the vehicle on either side. For non-load auxiliary equipment the allowance is 10 cm.

  5. 5What is progressive shifting?
    • A. Shifting before maximum governed rpm
    • B. Skipping gears when loaded
    • C. Downshifting on every hill
    • D. Shifting at maximum rpm each time

    Progressive shifting means shifting before the engine reaches its maximum governed rpm, around 1,600 rpm; it reduces wear, noise and fuel use.

  6. 6Which licence must you already hold before applying for Class A?
    • A. A Class G1 with a clean record
    • B. Any licence from any country
    • C. A Class G2 held at least one year
    • D. A valid Class G or higher

    You must hold a valid Ontario Class G or higher licence. G1, G2, M, M1 and M2 do not qualify.

  7. 7What is the fine range for a first offence of passing a stopped school bus with lights flashing?
    • A. $5,000 to $20,000
    • B. $1,000 to $4,000
    • C. $100 to $500
    • D. $400 to $2,000

    A first offence brings $400 to $2,000 and six demerit points; a second within five years brings $1,000 to $4,000 and possible jail.

  8. 8What is the minimum age to apply for a Class A licence in Ontario?
    • A. 16
    • B. 18
    • C. 19
    • D. 21

    An applicant for a Class A or D licence must be at least 18 years old.

  9. 9How should you chock a parked tractor-trailer?
    • A. Only in front of a steer tire
    • B. Under the fifth wheel plate
    • C. Front and back of a rear wheel
    • D. Behind the landing gear pads

    Set the parking brakes and place chocks on the rear wheel (front and back of the wheel) on one or both sides of the unit or trailer.

  10. 10From which side is an alley dock recommended?
    • A. Either side equally
    • B. The driver's side
    • C. The passenger side
    • D. Straight from the front

    When performing an alley dock, backing from the driver's side is recommended so you can watch the trailer out your window.

About the test

About the Ontario Class A (AZ) Truck Knowledge Test

A Class A licence lets you drive a truck or tractor towing vehicles whose total gross weight is more than 4,600 kg, plus anything covered by Class D and Class G. To drive a full tractor-trailer with air brakes you also need the Z air brake endorsement, which is why the licence is usually called AZ. If you test in a combination whose trailer has no air brakes, you receive a restricted AR licence instead.

To apply you must be at least 18, hold a valid Ontario Class G or higher licence, pass a vision test, submit a satisfactory medical report and pass the knowledge test on operating large trucks and tractor-trailers. New Class A applicants must then complete mandatory entry-level training (MELT) with an approved provider before the road test. From January 1, 2027, you must also have held a Class G or higher licence for at least six months before the Class A road test.

Ontario does not publish the number of questions on the Class A knowledge test. DriveTest says all its knowledge tests are multiple choice, not timed, marked on the spot and available in English and French (commercial tests also in 18 other languages on computer), and that you need a total score of at least 80 percent. Our mock exam uses 40 questions and a pass mark of 32 (80 percent) as a practice standard, not as the official format.

Questions on the knowledge test come from the Official MTO Truck Handbook, which covers both Class A and Class D. Topics shared by both classes include daily inspections and defects, hours of service, cargo securement, size and weight limits, CVOR, sharing the road and keeping your licence. Topics specific to Class A include uncoupling and coupling, tractor-trailer braking and off-tracking, and the Class A road test. If you are also studying for the air brake endorsement, use our separate Ontario air brake (Z) practice test, written from the Official Air Brake Handbook.

The road test that follows has three parts: a daily inspection (with uncoupling and coupling for Class A), a backing manoeuvre and an on-road drive. Several topics in this bank follow the road-test chapter of the handbook, so studying for the written test also prepares you for what the examiner will expect.

Study plan

How to prepare

  1. 1Read the Official MTO Truck Handbook once, start to finish. It is free on ontario.ca and every question here cites a page of it.
  2. 2Learn the size limits as a set: 2.6 m wide, 4.15 m high, semi-trailers 14.65 m (16.2 m with special approval), combinations 23 m, LCVs up to 40 m.
  3. 3Memorize the hours-of-service numbers: 10 hours off a day, 13 hours driving, 14 hours on duty, 16 hours elapsed after 8 off, 70 hours in 7 days or 120 in 14, and resets of 36 or 72 hours.
  4. 4Practise the coupling sequence in order. Many questions turn on the order: secure, landing gear, lines, unlock, pull ahead only partly, confirm, pull clear; and for coupling, inspect, align, back slowly, tug test, check for gaps and jaws, connect lines, raise the landing gear.
  5. 5Know the combination-braking rules: balanced braking, the trailer hand valve, what to do when the tractor or the trailer starts to jackknife, and why you never park on the hand valve.
  6. 6Take one practice test per topic, then reread the handbook page cited under each question you miss.
  7. 7When you score 36 or more out of 40 on two different mock exams in a row, you are ready to book the knowledge test.
  8. 8Bring two pieces of ID, your completed medical report form, the test fee and any glasses you need to read.

FAQ

Ontario Class A (AZ) test questions people ask

How many questions are on the Ontario AZ written test?

Ontario and DriveTest do not publish the number of questions on the Class A knowledge test. Our mock exam uses 40 questions as a practice standard so you can time yourself and track progress; treat that number as ours, not the official format.

What is the pass mark for the AZ knowledge test?

DriveTest states that its knowledge tests need a total score of at least 80 percent, and that they are not timed. Our mock asks for 32 out of 40, which is 80 percent.

How much does the Class A knowledge test cost?

DriveTest's fee list shows $23.75 for a commercial knowledge test and $122.75 for the commercial licence package (knowledge test plus road test) for applicants under 65. Fees are set by the province and can change, so confirm on drivetest.ca.

Is the AZ test the same as the DZ test?

Both are written from the same Official MTO Truck Handbook, so many topics overlap. Class A adds tractor-trailer topics such as coupling and uncoupling, combination braking and semi-trailer off-tracking. We have a separate DZ practice test for Class D with its own questions.

Do I need the air brake endorsement for AZ?

Yes, to drive a full tractor-trailer with air brakes you need the Z endorsement on top of Class A. It has its own knowledge and practical test; use our Ontario air brake (Z) practice test to prepare.

Do I need MELT before the written test?

No. Mandatory entry-level training must be completed before the Class A road test, not before the knowledge test. Many students pass the written test first, then take the course.

Can I take the AZ knowledge test in another language?

DriveTest says knowledge tests are available in English or French at a minimum, and computerized commercial knowledge tests are offered in 20 languages, including Punjabi, Hindi, Arabic, Chinese (Cantonese), Spanish and Tamil.

Are these the real AZ test questions?

No. Real test questions are not public. Every question here is written by us from the Official MTO Truck Handbook and cites the page it comes from.

More practice

Related practice tests