Ontario AZ Licence Practice Test 2026
The Class A knowledge test is the written test you take before the Class A road test in Ontario. AZ means a Class A licence with a Z (air brake) endorsement. These original questions are written from the Official MTO Truck Handbook and cover licensing, daily inspections, hours of service, coupling, cargo securement, size limits and safe truck driving.
Quick answer
It is run by Ministry of Transportation of Ontario (MTO); tests at DriveTest centres. Minimum age: 18. Practise here for free with 150 questions, each with the answer and an explanation. Checked against official sources on October 10, 2026.
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Question 1 of 25
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Answer: B. A motor vehicle towing a vehicle with a total gross weight over 4,600 kg
Class A covers combinations where the towed vehicle has a total gross weight over 4,600 kg (10,000 lb).
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Question 2 of 25
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Answer: B. Classes D and G
A Class A licence also allows you to drive Class D and Class G vehicles.
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Question 3 of 25
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Answer: B. A passenger bus
Class A does not cover passenger buses, motorcycles or mopeds. Buses need a bus class.
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Question 4 of 25
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Answer: C. 18
You must be at least 18 years old to apply for a Class A or Class D licence.
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Question 5 of 25
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Answer: C. A valid Ontario licence other than G1, G2, M, M1 or M2
Class A applicants need a valid Ontario licence that is not a G1, G2, M, M1 or M2.
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Question 6 of 25
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Answer: C. You must have held a Class G or higher licence for at least 6 months
From January 1, 2027, you must have held a Class G or higher licence for at least 6 months before the Class A road test.
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Question 7 of 25
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Answer: C. Before taking the Class A road test
All new Class A applicants must finish the mandatory training course before the Class A road test.
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Question 8 of 25
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Answer: D. July 1, 2017
Mandatory entry-level training for Class A started on July 1, 2017.
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Question 9 of 25
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Answer: B. A ministry-approved training provider
The course content is offered by ministry-approved providers.
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Question 10 of 25
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Answer: A. No, it applies to new Class A applicants
Drivers who already have a Class A licence are not required to take the training.
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Question 11 of 25
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Answer: D. Full air brakes on both units, a trailer rated at least 4,600 kg, and an 8-speed or more manual with high-low range
The full Class A test vehicle needs a trailer with an MGVWR of 4,600 kg or more, full air brakes on both units and a manual with at least eight forward gears and a high-low range.
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Question 12 of 25
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Answer: C. You get a restricted Class A licence (AR)
Testing in a vehicle that does not meet full Class A requirements gives you a restricted Class A (AR) licence.
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Question 13 of 25
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Answer: C. Pull an air-brake trailer or drive a full-size tractor-trailer
AR holders cannot pull air-brake trailers, drive full-size tractor-trailers or drive double trailers.
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Question 14 of 25
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Answer: D. Your licence is restricted to automatic, semi-automatic or automated-manual vehicles
A test in a manual vehicle without at least eight forward gears and a high-low range results in a transmission restriction.
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Question 15 of 25
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Answer: B. Trucks over 11,000 kg, or combinations where the towed vehicle is 4,600 kg or less
Class D covers heavy trucks over 11,000 kg and combinations where the towed vehicle does not exceed 4,600 kg.
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Question 16 of 25
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Answer: D. The Official MTO Truck Handbook
The Official MTO Truck Handbook covers the rules and skills tested for truck licences.
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Question 17 of 25
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Answer: D. A completed ministry medical certificate
Class A and D applicants must provide a satisfactory medical certificate on application and from time to time after that.
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Question 18 of 25
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Answer: B. Six
You inspect six randomly generated items from the schedule and explain possible defects and what you would do.
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Question 19 of 25
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Answer: B. The test is cancelled and you lose 50% of the prepaid fee
Bring a valid daily inspection report and the schedule. Otherwise, the test is cancelled and you lose half the fee.
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Question 20 of 25
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Answer: D. A daily inspection, uncoupling and coupling, and backing
Class A applicants show a daily inspection, uncoupling and coupling, and backing the combination, then drive in traffic.
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Question 21 of 25
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Answer: D. Wheel chocks or blocks
The road test checklist includes wheel chocks or blocks for vehicles with air brakes.
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Question 22 of 25
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Answer: B. A Class A licence with a Z (air brake) endorsement
Class A covers the combination. A Z endorsement is needed to drive vehicles with air brakes.
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Question 23 of 25
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Answer: B. Trucks with a registered or actual weight over 4,500 kg
A CVOR is required for trucks over 4,500 kg (registered or actual weight) and buses designed for 10 or more passengers.
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Question 24 of 25
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Answer: D. Five years from the offence date
Records remain on the operator's CVOR record for five years from the date of the offence.
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Question 25 of 25
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Answer: A. 2.6 m
The maximum width is 2.6 m (8.5 ft).
Keyboard: 1–4 to answer, Enter for the next question.
What to know before the test
- A Class A licence lets you drive a vehicle towing a vehicle with a total gross weight over 4,600 kg. It also covers Class D and G vehicles, but not buses.
- You must be at least 18, hold an Ontario licence other than G1, G2, M, M1 or M2, pass a vision test, provide a medical certificate and pass a knowledge test and road test.
- All new Class A applicants must complete mandatory entry-level training with a ministry-approved provider before the road test. The requirement started on July 1, 2017.
- From January 1, 2027, you must have held a Class G or higher licence for at least 6 months before the Class A road test.
- A full Class A road test needs a trailer rated at least 4,600 kg, full air brakes on both units and a manual transmission with at least 8 forward gears and a high-low range. Otherwise, a restriction applies.
- You need a Z endorsement to drive vehicles with air brakes or air-over-hydraulic brakes.
Frequently asked questions
What does AZ mean in Ontario?
AZ is a Class A licence with a Z air brake endorsement. Class A covers tractor-trailers and other combinations where the towed vehicle is over 4,600 kg; Z is needed for air brakes.
How many questions are on the Ontario Class A knowledge test?
The ministry's licence pages do not publish a question count, so study the whole Official MTO Truck Handbook. Our mock exam uses 40 questions with an 80% target as practice.
Do I need MELT before the Class A knowledge test?
Mandatory entry-level training must be finished before the Class A road test. New Class A applicants take it with a ministry-approved provider.
What is on the Class A road test?
A daily inspection of six random items, uncoupling and coupling, backing, and driving in traffic. Bring a valid daily inspection report and the vehicle's schedule.
What happens if I test in a truck without air brakes on the trailer?
You get a restricted Class A (AR) licence, which does not let you pull air-brake trailers, full-size tractor-trailers or doubles.