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100+ Free Ontario Class A Commercial Practice Questions

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2026 Statistics

Key Facts: Ontario Class A Commercial Exam

18

Minimum age

Ontario.ca truck licence page

103.5

Minimum MELT hours

Ontario.ca mandatory training page

80%

Knowledge-test pass standard

DriveTest knowledge tests page

$23.75

Commercial knowledge test

DriveTest fees page

$122.75

Commercial package under 65

DriveTest fees page

4,600 kg

Class A towed-vehicle threshold

Ontario.ca truck licence page

4.15 m

Ontario maximum vehicle height

Official MTO Truck Handbook

55 psi

Low-air warning minimum activation

Official Air Brake Handbook

Ontario's full Class A/Z path covers tractor-trailers and other qualifying combinations, including trailers with full air brakes, while restricted Class A condition R does not allow full-size tractor-trailers, trailer air brakes or double trailers. New full Class A applicants must complete at least 103.5 hours of mandatory entry-level training before attempting the road test. DriveTest administers MTO-created, multiple-choice commercial knowledge tests at DriveTest Centres, publishes an 80% total pass standard, says knowledge tests are not timed, and lists the commercial knowledge test at $23.75 and commercial package at $122.75. Official public pages used here do not publish a fixed Class A question count, so this file does not invent one.

Sample Ontario Class A Commercial Practice Questions

Try these sample questions to test your Ontario Class A Commercial exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Which Ontario licence best matches a driver who wants full tractor-trailer privileges with air brakes on both the tractor and trailer?
A.Class D with an RV restriction
B.Full Class A with a Z air brake endorsement
C.Restricted Class A condition R
D.Class G with an RV endorsement
Explanation: Ontario describes the full Class A truck licence with a Z endorsement as the licence that covers full air brake systems on both the tractor and trailer. It is the typical full tractor-trailer path for Class AZ drivers.
2What is the minimum age to apply for an Ontario Class A or Class D truck driver's licence?
A.16 years old
B.17 years old
C.18 years old
D.21 years old
Explanation: Ontario lists 18 years old as the minimum age for Class A and Class D truck licence applicants. Applicants must also meet licensing, vision, medical and testing requirements.
3A driver holds a restricted Class A licence, condition R. Which vehicle use is not allowed under that restriction?
A.Driving a car covered by Class G
B.Driving a heavy truck covered by Class D
C.Pulling a trailer equipped with air brakes
D.Operating a smaller horse trailer combination without trailer air brakes
Explanation: Ontario states that a restricted Class A holder cannot pull a trailer equipped with air brakes. Restricted Class A is intended for smaller truck-trailer combinations and does not provide full Class A privileges.
4Why does mandatory entry-level training matter for a new Ontario full Class A applicant?
A.It must be completed before attempting the Class A road test
B.It replaces the need for a vision test
C.It allows the applicant to skip the knowledge test
D.It is required only after the driver fails a road test
Explanation: Ontario requires mandatory entry-level training before a new full Class A applicant attempts the Class A road test. The training does not replace the separate knowledge, vision, medical and road-test requirements.
5Ontario's mandatory entry-level training for Class A applicants must include at least how much instruction?
A.24 hours
B.40 hours
C.80 hours
D.103.5 hours
Explanation: Ontario states that mandatory entry-level training includes at least 103.5 hours of instruction. It covers the entry-level knowledge and skills needed to operate a large truck safely on Ontario roads.
6To avoid a manual transmission restriction on a Class A road test, what vehicle transmission setup does Ontario require?
A.Any automatic transmission with paddle controls
B.A manual transmission with at least eight forward gears and a high-low range
C.Any vehicle with five forward gears and air brakes
D.A semi-automatic transmission with a clutch simulator
Explanation: Ontario says the Class A or AR road test must be completed in a vehicle with a manual transmission consisting of at least eight forward gears with a high-low range to avoid the manual transmission restriction. Otherwise, the driver is restricted to automatic, semi-automatic or automated-manual Class A/AR vehicles in Ontario.
7Which vehicle is specifically outside the privilege of an Ontario Class A licence?
A.A vehicle pulling double trailers when properly licensed
B.A heavy truck covered by Class D
C.A bus carrying passengers
D.A car or light truck covered by Class G
Explanation: Ontario states that a Class A licence does not allow the driver to drive a bus carrying passengers, a motorcycle or a moped. Bus passenger privileges require the appropriate bus class, not Class A alone.
8As of May 11, 2026, what additional documentation does Ontario say Class A to F applicants must provide when applying?
A.Proof of primary Ontario residence, legal presence in Canada and eligibility to work in Canada
B.Proof of owning the truck used for the road test
C.A letter from every previous employer
D.Proof that they have never held a passenger-car licence
Explanation: Ontario's truck licence page states that, as of May 11, 2026, Class A, B, C, D, E or F applicants need documents verifying Ontario as their primary place of residence, legal presence in Canada and eligibility to work in Canada. This is separate from the identity, medical and testing requirements.
9Who creates Ontario commercial knowledge tests administered at DriveTest Centres?
A.The Ontario Ministry of Transportation
B.Individual truck training schools
C.The vehicle owner supplying the road-test truck
D.The insurance company named on the vehicle
Explanation: DriveTest states that knowledge tests for driver licence applicants are created by the Ministry of Transportation. DriveTest Centres administer those tests on behalf of MTO.
10What score does DriveTest publish as the minimum total score to pass a knowledge test?
A.60 percent
B.70 percent
C.80 percent
D.90 percent
Explanation: DriveTest states that knowledge-test applicants must earn a total score of at least 80 percent to pass. That is the official generic DriveTest pass standard published for knowledge tests.

About the Ontario Class A Commercial Exam

The Ontario Class A Commercial Driver Knowledge Test is the written knowledge step for drivers seeking Class A truck and tractor-trailer privileges in Ontario. Official Ontario sources say Class A applicants must be at least 18, hold a valid Ontario licence other than G1, G2, M, M1 or M2, meet vision and medical requirements, pass a knowledge test about large trucks and tractor-trailers, and complete mandatory entry-level training before the full Class A road test. The test is based on the Official MTO Truck Handbook, with air brake knowledge and Z endorsement context drawn from Ontario's Official Air Brake Handbook when the vehicle uses air brakes.

Assessment

Official DriveTest materials describe MTO-created, proctored, multiple-choice knowledge tests with two or three sections, offered at DriveTest Centres. The Class A knowledge test is based on Ontario's Official MTO Truck Handbook; DriveTest does not publish a Class A-specific question count in the official pages used here.

Time Limit

Not timed; DriveTest says knowledge tests typically take 20 to 30 minutes and applicants may take the time needed until the office closes.

Passing Score

At least 80% total according to DriveTest's generic knowledge-test page.

Exam Fee

$122.75 commercial licence package for applicants under 65; $23.75 commercial knowledge test; $66.00 air brake endorsement package and $16.00 Z knowledge test when applicable. (Ontario Ministry of Transportation (MTO), administered at DriveTest Centres)

Ontario Class A Commercial Exam Content Outline

Official licensing requirement

Class A, AZ and MELT Requirements

Full Class A/Z privileges, restricted Class A condition R limits, age 18, valid Ontario licence, vision and medical requirements, 103.5-hour MELT, road-test vehicle configuration and manual transmission restriction.

Official DriveTest logistics

Knowledge Test Administration

MTO-created, proctored, multiple-choice knowledge tests at DriveTest Centres; paper and computer delivery; 80% total pass standard; not timed; typical 20-30 minute completion; fees and one-year result validity.

Official Truck Handbook core

Daily Trip Inspection and Roadworthiness

Schedule 1 inspections every 24 hours, minor and major defects, reports and schedules, road-test inspection requirements, tire tread, wheels, steering, annual inspections, inspection stations and CVOR documents.

Official Air Brake Handbook context

Air Brakes and Z Endorsement

Z endorsement requirement, inspection safety, low-air warning threshold, build-up time, governor limits, air-loss rates, spring brakes, foundation brakes, brake chambers, air lines and safe brake use.

Official Truck Handbook Class A skills

Coupling, Uncoupling and Backing

Safe backing preparation, landing gear, fifth-wheel and kingpin alignment, tug test, visual lock checks, safety chains, air and electrical lines, trailer air supply, uncoupling stability and backing precautions.

Official Truck Handbook core

Cargo Securement and Load Safety

Driver responsibility for balanced and secured loads, overhang marking, first 80-km cargo recheck, three-hour and 240-km reinspection triggers, sealed-load exceptions and NSC Standard 10.

Official Truck Handbook core

Hours of Service and Logbooks

Commercial vehicle thresholds, duty-status categories, daily off-duty, 13-hour driving, 14-hour on-duty, 16-hour elapsed, seven-day and 14-day cycles, resets, daily-log contents and 160-km local exemption.

Official Truck Handbook roadcraft

Road Rules, Space and Emergencies

Following distance, speed limiter, off-tracking, wide turns, backing, railway crossings, signs and markings, fog, rain, hydroplaning, skids, snow plows, disabled vehicles and emergency warning devices.

How to Pass the Ontario Class A Commercial Exam

What You Need to Know

  • Passing score: At least 80% total according to DriveTest's generic knowledge-test page.
  • Assessment: Official DriveTest materials describe MTO-created, proctored, multiple-choice knowledge tests with two or three sections, offered at DriveTest Centres. The Class A knowledge test is based on Ontario's Official MTO Truck Handbook; DriveTest does not publish a Class A-specific question count in the official pages used here.
  • Time limit: Not timed; DriveTest says knowledge tests typically take 20 to 30 minutes and applicants may take the time needed until the office closes.
  • Exam fee: $122.75 commercial licence package for applicants under 65; $23.75 commercial knowledge test; $66.00 air brake endorsement package and $16.00 Z knowledge test when applicable.

Keys to Passing

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

Ontario Class A Commercial Study Tips from Top Performers

1Read Ontario's Official MTO Truck Handbook first, then use practice questions to check whether you can apply the rules to inspection, coupling, roadcraft and emergency scenarios.
2Memorize Ontario numbers that are easy to confuse: age 18, towed-vehicle threshold 4,600 kg, maximum vehicle height 4.15 m, speed limiter 105 km/h, 60 m following distance above 60 km/h, and cargo rechecks at 80 km, 3 hours or 240 km.
3Study air brake thresholds separately: low-air warning at or above 55 psi, build-up from 85 to 100 psi within two minutes, cut-out not over 145 psi, cut-in not below 80 psi, and tractor-trailer air loss not over 4 psi per minute.
4Drill fifth-wheel sequence as a safety flow: secure, inspect, align height, back slowly, engage, tug test, visual lock check, connect lines, raise landing gear, supply air, listen for leaks and test brakes.
5Treat hours-of-service questions as rule matching: daily 10 hours off-duty, 13 hours driving maximum, 14 hours on-duty limit, 16-hour elapsed rule, 70-hour seven-day cycle and 120-hour 14-day cycle.
6Do not memorize unofficial live-test questions. Ontario and DriveTest do not publish the actual Class A test questions, so focus on handbook concepts and safe commercial-driving decisions.

Frequently Asked Questions

Who administers the Ontario Class A commercial knowledge test?

The Ontario Ministry of Transportation creates the knowledge test, and DriveTest Centres administer it. DriveTest states that knowledge tests are proctored, multiple choice, marked on the spot, and available without an appointment at DriveTest Centres.

What should I study for the Ontario Class A knowledge test?

Ontario says the Official MTO Truck Handbook prepares applicants for the written knowledge test and covers truck-driver regulations and skills. Class A candidates should also understand air brake material from the Official Air Brake Handbook when seeking or using Z endorsement privileges.

How many questions are on the Ontario Class A knowledge test?

The official Ontario and DriveTest pages used for this metadata do not publish a fixed Class A-specific question count. DriveTest says knowledge tests are multiple choice and usually have two or three sections; this practice bank provides 100 original study questions.

What score do I need to pass?

DriveTest publishes a generic knowledge-test requirement of at least 80% total. The official pages used here do not publish a separate Class A-only pass mark.

Is the Class A knowledge test timed?

DriveTest says knowledge tests are not timed and applicants can take the time they need until the office closes. DriveTest also says knowledge tests typically take 20 to 30 minutes.

How much does the Ontario commercial knowledge test cost?

DriveTest lists the commercial knowledge test at $23.75. It also lists the commercial licence package for applicants under 65 at $122.75, including a knowledge test and road test.

Do I need MELT before the knowledge test?

Ontario requires mandatory entry-level training before attempting the full Class A road test, not before simply studying the handbook. New full Class A applicants should still plan for MELT because it is required before the road-test step.

When do I need the Z endorsement?

Ontario says a Z endorsement is required to drive a vehicle with an air brake or air-over-hydraulic brake system. Full Class A/Z is the path associated with full air brake systems on both the tractor and trailer.