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View All Plans- Based on 2025 ON commercial driver's licence manual
- Updated for May 2025
ON Air Brake Marathon
Driving a commercial vehicle is completely different from driving a car. Drivers must know more about their vehicles, and they need to take extra safety precautions. A commercial driver’s licence is required to drive a commercial vehicle of a certain size and weight in Canada. To obtain a commercial driver’s licence in Ontario, the driver must pass a written knowledge test and a road test. This 669-question Marathon contains all questions from our other ON Air Brake tests. It will cycle through them until you’ve provided a correct answer to each of them. The Air Brake Marathon is based on the 2025 Ontario commercial driver’s manual. You can also use our regular Air Brake practice tests for ON to prepare for your test. When you’re ready, take the Air Brake Exam Simulator.
- Perfect for first-time and renewal commercial applicants, and those adding endorsements
- Triple-checked for accuracy
About this test
questions
correct answers to pass
passing score
List of questions (classic view)
- What does a flashing red signal light mean?
- What does a flashing amber signal light mean?
- A flashing green signal light indicates that you
- If your vehicle is skidding, you should turn the front wheels
- What should you NOT do if you find yourself skidding?
- According to the Nunavut Driver's Manual, you should place your hands on the steering wheel in what positions?
- If an emergency vehicle displaying a flashing red light or sounding a siren approaches you, what should you do?
- Before making a left turn on a two-way road, you should position your vehicle
- ________ is an area of the roadway that you can't see in your rear-view or side mirrors.
- You are not allowed to carry _______ in a trailer.
- Blind pedestrians may carry _________ canes or use the assistance of guide dogs.
- If a blind pedestrian with a guide dog is waiting at a crosswalk,
- What does this green arrow signal indicate?
- When entering a freeway, speed up to the freeway speed
- You want to pass a vehicle ahead that is stopped for a pedestrian. What should you do?
- If your vehicle stalls on the highway and you are unable to move it away from traffic, you should
- You are approaching a red light, but a police officer waves you through. What should you do?
- Are you permitted to turn right on a red signal light?
- When you see a pedestrian crossing an unmarked crosswalk where there are no traffic control signals, you should
- To make a left turn from a one-way street onto another one-way street, you should position your vehicle
- Which of the following statements about changing lanes is FALSE?
- Before changing lanes, you should
- A broken yellow line alongside a solid yellow line indicates that
- When leaving a parked position, you should
- If a tire blows out, you should NOT
- You're driving on a slippery, wet road. What is the best way to stop your vehicle if it lacks antilock brakes (ABS)?
- It is an offence to
- In this image, the white line painted across each approach lane at the intersection represents
- Upon approaching a yield sign, you should
- Snowplows are equipped with flashing _______ lights to make them more visible.
More resources
- Alberta: Test 1 / Test 2
- British Columbia: Test 1 / Test 2
- New Brunswick: Test 1 / Test 2
- Newfoundland and Labrador: Test 1 / Test 2
- Northwest Territories: Test 1 / Test 2
- Nova Scotia: Test 1 / Test 2
- Nunavut: Test 1 / Test 2
- Ontario: Test 1 / Test 2
- Prince Edward Island: Test 1 / Test 2
- Quebec: Test 1 / Test 2
- Saskatchewan: Test 1 / Test 2
- Yukon: Test 1 / Test 2
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