Ontario Class B (Bus) Commercial Licence Practice Test 4
- Perfect for first-time and renewal commercial applicants, and those adding endorsements
- Based on 2024 ON commercial driver's licence manual
- Triple-checked for accuracy
- Updated for August 2024
What you need to know
Verified by Steven Litvintchouk, M.S., Chief Educational Researcher, Member of ACES. See our detailed commitment to accuracy and quality in our practice tests.
Welcome to Practice Test 4, a critical step in your journey to obtaining a Class B license in Ontario. This test consists of 50 questions aimed at preparing you for emergency situations, like brake failure. Did you know that Class B license holders in Ontario are not allowed to operate vehicles with air brakes unless specifically permitted? So, understanding alternative safety measures is crucial. Aim for a passing score of 80% or above.
What to expect on the official exam
50
questions
40
correct answers to pass
80
passing score
Our commitment to accuracy and quality in our practice tests
Explore our rigorous, multi-tiered verification process that ensures each question mirrors the official manual for unparalleled accuracy.
Written by Andrei Zakhareuski Updated over a week ago
At Tests.ca, we understand the importance of reliable and accurate practice tests to help you prepare for your driver's knowledge exam. That's why we've developed a meticulous process to create and continually update our practice questions, ensuring they reflect the most current driving laws and regulations.
Here's an inside look at how we maintain the highest quality in our practice tests.
Content Creation and Verification Process
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We leverage feedback from our vast community of users to understand which topics are most frequently tested. This helps us focus on the areas that are most relevant and beneficial for your preparation. - Expert Content Creation:
Our in-house editor, Steven, who has extensive experience in driver education, crafts each question with precision. He conducts a thorough review of each question against the official manuals to ensure accuracy. - Rigorous Review Process:
Once Steven has finalized a set of questions, our team conducts a joint review session. This second level of scrutiny involves content accuracy, proofreading, and fact-checking to eliminate any errors. - User Feedback Mechanism:
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In line with our commitment to accuracy, we quickly update our practice questions to reflect any changes in the provincial government manuals. Additionally, we update the free electronic copy of the state's driver's license manuals on our site, typically within a few days after the government publishes them.
Our thorough quality control process ensures that you have access to practice tests that are as accurate and up-to-date as possible. We believe in the power of well-prepared drivers and are dedicated to providing you with the best study tools to help you succeed on your driver's knowledge exam.
List of questions (classic view)
- Are buses and school buses required by law to carry an appropriate fire extinguisher?
- When a traffic light turns yellow, what is the driver advised to do?
- Where should you arrange your practice evacuation drills?
- What is commonly known as a traffic beacon?
- What does a flashing red beacon above an intersection signify?
- What does a broken yellow line indicate on the road?
- When faced with a flashing yellow traffic signal, what should a driver do?
- Whose duty is it to ensure the safety of passengers traveling on a bus?
- Who is responsible for setting up regular evacuation drills?
- What is the final step when loading passengers onto a bus?
- Which of the following are not considered standard emergency exits?
- In case of a power outage where traffic lights are not working at intersections, what action should you take?
- When you face a flashing green light or a left-pointing green arrow with a green light at an intersection, what color is the traffic light for oncoming traffic?
- If a fire extinguisher is missing from the bus while passengers are on board, what type of defect is it considered?
- What is not a required step after a minor traffic collision with no injuries involved?
- When the brake pushrod stroke exceeds the set limit, this is classified as what type of defect?
- The maximum amount of demerit points a holder of a Class B or E licence can possess would be...?
- How long do demerit points remain on your driving record?
- Which of the following circumstances would not require the police to test for impairment from alcohol and drugs?
- Which of the following should be considered when planning routes and schedules for school buses?
- How many mistakes are permitted during the daily inspection test?
- Are demerit points added or subtracted from a driver's report?
- During your inspection test, what do you do if your bus doesn't allow you access to measure pushrod stroke?
- During testing for audible air leaks, what type of defect does it indicate if one is detected?
- If a Class B or E licence holder exceeds eight demerit points, what happens?
- To test the air pressure build-up rate, you should reduce air pressure to
- If you hold ________, you must submit medical reports regularlly.
- How many errors are allowed during the on-road test for a Class B/E or C/F licence?
- If the air pressure takes more time than the set limit to build up during a test, what type of defect is it classified as?
- Why is it advised to pick up and drop off passengers on the home side of the road?
- During the backing skills test for a Class B/E and C/F licence, how much time is given to complete the test?
- What are the consequences if you refuse, fail or are unable to provide a breath sample or perform a physical coordination test?
- Can you use the pertinent Schedule as reference during the daily inspection test for Class B/E and C/F tests?
- When testing the slow air pressure build-up rate on an air brake equipped bus, how long is the maximum time it should take to build the air pressure to the correct level?
- When planning route layouts for school buses, a school bus driver should help make recommendations to all of the following EXCEPT
- What is not assessed during the on-road test for Class B/E or C/F licensing?
- If you are downgraded to a lower licence class due to eight or more demerit points, how long will you stay in the lower licence class?
- The inspection test for Class B/E or C/F road tests covers all of the following EXCEPT
- How many randomly selected items will you be asked to locate and inspect during the exterior inspection for Class B/E and C/F tests?
- Are school buses subject to surprise safety inspections by Ministry of Transportation staff throughout the year?
- A bus driver who has been found impaired by alcohol or drugs may face which of these penalties?
- If your driver's licence has been suspended, cancelled or expired for more than three years, what is the proper course of action?
- Is it possible to be charged for impaired driving even if you haven't started the car?
- For a vehicle equipped with air brakes, it's a major defect if air pressure drops by 3 psi within
- The law requires regular inspection of the following vehicles operated by or under contract to a school board, EXCEPT
- The minimum acceptable tread depth for the steering tires is
- Which of these suspension-related defects is considered a major defect?
- A lamp that's the wrong colour counts as
- What is the minimum tread depth acceptable for tires that are not used for steering?
- Is a "main spring leaf" a real component of the suspension system?