- Based on 2025 ON commercial driver's licence manual
- Updated for January 2025
ON Class C Commercial Licence Practice Test 4
- Perfect for first-time and renewal commercial applicants, and those adding endorsements
- Triple-checked for accuracy
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correct answers to pass
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- Is it necessary to operate the flashing lights and stop arm within a school-bus loading zone?
- At what frequency should evacuation exercises take place?
- Where should you arrange your practice evacuation drills?
- 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?
- The maximum amount of demerit points a holder of a Class B or E licence can possess would be...?
- Which of the following should be considered when planning routes and schedules for school buses?
- 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?
- Exhaust gases entering the vehicle's cabin due to an exhaust-system leak constitutes which sort of defect?
- For air bags, each of these counts as a major defect EXCEPT
- What sort of defect is it when a tire is rubbing against another tire or vehicle component?
- If a window or door fails to close securely, what type of defect does this constitute?
- When there are visible signs warning of a possible wheel, hub, or bearing failure, what sort of defect is it considered?
- When the brake fluid level falls below the manufacturer's prescribed minimum level, what type of defect is it deemed?
- Is it considered a defect if a compartment door is either missing or insecure?
- What sort of defect is it when any part of the vehicle's body is either insecure or missing?
- What can a loss of brake fluid cause?
- If the required alarm for the emergency exits is not working and there are passengers present, what type of defect is this considered?
- How should you inspect the level of hub oil?
- If you suspect a tire leak but you can't feel it or hear it, does it count as a defect?
- A loose U-bolt in the vehicle's suspension counts as what kind of defect?
- In relation to a frame component, which of the following is NOT considered a major defect?
- If you notice an exhaust leak, what type of defect is it?
- What sort of defect is it when a lamp is either missing or not working?
- When the hydraulic brake reservoir is less than a quarter full, what type of defect is it deemed?
- If there is noticeable damage to the tread or sidewall of a tire, what sort of defect does it constitute?
- When the attachments for a needed mirror or another piece of glass are damaged, what kind of defect is it?
- What type of defect is it when the low air-warning either fails to operate or operates prematurely before air pressure drops below 55 psi?
- If an air leak is discernible in the air-suspension system, what kind of defect does it constitute?
- In the inspection of any wheel, rim, or part used to attach the wheel or rim, which of the following are considered major defects?
- What happens when any door doesn't secure appropriately when passengers are present?
- Which of the following is not a minor defect with regards to suspension fasteners?
- What type of defect is it when any spring has a single broken leaf?