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Based on 2025 ON commercial driver's licence manual
Updated for May 2025
Ontario Class B (Bus) Commercial Licence Practice Test 7
As you develop the skills necessary to obtain an Ontario Class B commercial licence, you should learn proper pre-trip inspection procedures. It is critical to conduct a thorough inspection of the vital systems and components of the bus and identify any present or potential defects before transporting passengers. You will be tested on your understanding of this process as part of your Ontario Class B Commercial Licence Knowledge Test. National Safety Code Standard 13 requires all buses to undergo a pre-trip inspection before being driven on public roads. Your ability to conduct this inspection ensures the safety of passengers and keeps you in compliance with regulations. You wouldn’t want to find out there is an air leak, inoperative defroster, or missing fire extinguisher while driving on Highway 401 in Toronto.While you must meet several requirements to obtain your licence, our Ontario Class B Commercial Licence Practice Test 7 will enhance your knowledge to pass the official knowledge test. You must correctly answer 80% of the official knowledge test questions (the required passing score). Using the practice test, you can get a thorough understanding of pre-trip inspections that will assist you in meeting this requirement. The practice test helps you identify any misunderstandings you may have about conducting a pre-trip inspection, helping you use your study time more efficiently. After passing the official knowledge test, you will be able to practice these skills as you train with your learner’s licence.This Ontario Class B Commercial Licence Test uses the most reliable and authoritative information available to expand your knowledge of pre-trip inspections. It is based on the most recent Ontario Ministry of Transportation (MTO) Bus Handbook. The practice test employs an informative approach that makes learning the vast amount of information on pre-trip inspections more manageable. It includes 49 multiple-choice questions to assess your knowledge of pre-trip inspections. If you get a question wrong, the practice test will provide a detailed explanation of the correct answer. This approach reinforces your retention of the answer by providing the logic behind the information supporting it. While study guides are popular, you won’t find them as capable of preparing you to answer questions about pre-trip inspections. They limit your learning to memorizing the answers to the questions. This tactic falls short of helping you fully absorb the information being studied. If you want confidence in your ability to thoroughly perform a pre-trip inspection, the practice test provides the necessary support.You will find the trip to enjoy the attractions at Manitoulin Island a bit complicated, but your journey to extraordinary driving skills is simple with the practice tests at https://tests.ca/ontario.
Perfect for first-time and renewal commercial applicants, and those adding endorsements
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List of questions (classic view)
If a crash occurs while you are backing up with the aid of a guide, who will be held responsible?
If a fire starts in your vehicle, you should do which of the following?
If a peace officer asks for your logbook and supporting documents, what documents should you provide?
If an air line ruptures between the compressor and the supply reservoir, what will prevent loss of air pressure in the service brake system?
If another driver wants to pass your vehicle, what should you do?
If someone is tailgating you, what should you do?
If you are going to park for longer than ________, you should turn off your engine.
If you are parking a bus on a downgrade, you should
If you are parking a single-unit (straight) vehicle on an upgrade without a curb, you should
If you are parking a vehicle on a downgrade, you should
If you are required to keep a logbook, what must you have in your possession?
If you are unable to keep up with traffic on a steep grade, what should you do?
If you are parking your vehicle on an upgrade without a curb, you should
If you feel tired while driving,
If you find a defect or deficiency in your passenger vehicle, what should you do?
If you find a major defect in your vehicle during your pre-trip inspection, when must it be repaired?
If you leave the paved portion of the roadway, which of these should you NOT do to return to the roadway?
If you miss your exit on a highway, you should
If you must adjust an automatic slack adjuster that has a hexagonal (six-sided) adjusting bolt, you should turn the adjusting bolt in which direction?
If you must drive more slowly than the traffic flow, you should
If you need to keep a daily log, what else do you need to keep with you?
If you reduce a tire’s air pressure when it is warm,
If you see this sign, it means you are
If you're driving a motor home, you should maintain a following distance of at least ________ behind the vehicle in front of you.
If you're on a 14-day cycle, what is the maximum number of hours you can drive within 14 consecutive days?
If your brakes get wet, what should you do?
If your vehicle breaks down on the freeway, you should
If your vehicle is carrying cargo, how often must you perform an en-route inspection of the cargo securement system?
If your vehicle starts to hydroplane, what should you do?
If your vehicle starts to pull strongly to the right, it indicates
In a sedan-type vehicle, how many passengers may be seated on your right side?
Are you legally allowed to exceed the speed limit to pass another vehicle?
When are you allowed to exceed the speed limit when passing another vehicle?
In an urban area such as a village, town or city, are you allowed to back up into an intersection or crosswalk?
In the context of commercial driving, what is a turnout?
Just before your vehicle comes to a full stop, you should __________ to prevent your vehicle from jerking back.
Making eye contact with cyclists around your vehicle
On a log-hauling truck, logs may extend up to _______ behind the bed of the truck.
On a long, narrow stretch of highway, a bus has just reached a passing lane. The bus is travelling slower than the rest of the traffic. What should the bus driver do?
On icy or other slippery roads, you should avoid using your
Overdriving your headlights at night is dangerous because
On-duty time includes which of the following?
On-duty time includes which of the following?
Partway through your trip, you must couple to another trailer. What should you do?
Rapid acceleration can increase your fuel consumption by up to
Reducing a tire’s air pressure when it is hot
Shared centre lanes are used for
Someone texts you while you're driving. What should you do?
Stopping on icy roads requires
The area of a primary highway beyond the solid white line is meant for
If a crash occurs while you are backing up with the aid of a guide, who will be held responsible?
If a fire starts in your vehicle, you should do which of the following?
If a peace officer asks for your logbook and supporting documents, what documents should you provide?
If an air line ruptures between the compressor and the supply reservoir, what will prevent loss of air pressure in the service brake system?
If another driver wants to pass your vehicle, what should you do?
If someone is tailgating you, what should you do?
If you are going to park for longer than ________, you should turn off your engine.
If you are parking a bus on a downgrade, you should
If you are parking a single-unit (straight) vehicle on an upgrade without a curb, you should
If you are parking a vehicle on a downgrade, you should
If you are required to keep a logbook, what must you have in your possession?
If you are unable to keep up with traffic on a steep grade, what should you do?
If you are parking your vehicle on an upgrade without a curb, you should
If you feel tired while driving,
If you find a defect or deficiency in your passenger vehicle, what should you do?
If you find a major defect in your vehicle during your pre-trip inspection, when must it be repaired?
If you leave the paved portion of the roadway, which of these should you NOT do to return to the roadway?
If you miss your exit on a highway, you should
If you must adjust an automatic slack adjuster that has a hexagonal (six-sided) adjusting bolt, you should turn the adjusting bolt in which direction?
If you must drive more slowly than the traffic flow, you should
If you need to keep a daily log, what else do you need to keep with you?
If you reduce a tire’s air pressure when it is warm,
If you see this sign, it means you are
If you're driving a motor home, you should maintain a following distance of at least ________ behind the vehicle in front of you.
If you're on a 14-day cycle, what is the maximum number of hours you can drive within 14 consecutive days?
If your brakes get wet, what should you do?
If your vehicle breaks down on the freeway, you should
If your vehicle is carrying cargo, how often must you perform an en-route inspection of the cargo securement system?
If your vehicle starts to hydroplane, what should you do?
If your vehicle starts to pull strongly to the right, it indicates
In a sedan-type vehicle, how many passengers may be seated on your right side?
Are you legally allowed to exceed the speed limit to pass another vehicle?
When are you allowed to exceed the speed limit when passing another vehicle?
In an urban area such as a village, town or city, are you allowed to back up into an intersection or crosswalk?
In the context of commercial driving, what is a turnout?
Just before your vehicle comes to a full stop, you should __________ to prevent your vehicle from jerking back.
Making eye contact with cyclists around your vehicle
On a log-hauling truck, logs may extend up to _______ behind the bed of the truck.
On a long, narrow stretch of highway, a bus has just reached a passing lane. The bus is travelling slower than the rest of the traffic. What should the bus driver do?
On icy or other slippery roads, you should avoid using your
Overdriving your headlights at night is dangerous because
On-duty time includes which of the following?
On-duty time includes which of the following?
Partway through your trip, you must couple to another trailer. What should you do?
Rapid acceleration can increase your fuel consumption by up to
Reducing a tire’s air pressure when it is hot
Shared centre lanes are used for
Someone texts you while you're driving. What should you do?
Stopping on icy roads requires
The area of a primary highway beyond the solid white line is meant for
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Written by Andrei ZakhareuskiUpdated over a week ago
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