Class 4 Commercial Driver Practice · Question
If you detect a major defect during a pre-trip inspection, what action should you take?
An air leak in the brake system is a 'major defect.' The driver must not operate the vehicle until it is repaired.
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Question: If you detect a major defect during a pre-trip inspection, what action should you take?
Answer options: ✅ Don't drive the vehicle and report the defect to the carrier.
- Drive to the nearest repair shop immediately.
- Complete your route and report it at the end of the day.
- Note it in the logbook and check it again tomorrow.
Correct answer: Don't drive the vehicle and report the defect to the carrier.
Explanation: An air leak in the brake system is a 'major defect.' The driver must not operate the vehicle until it is repaired.
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Question explanations
- What should you do if your accelerator pedal sticks while you are driving?
- What type of information should a Class 4 driver generally NOT include in their daily trip records or logbook
- When operating a taxi or small bus, when are you required to ensure passengers are using seatbelts?
- What is the correct procedure for a small bus driver approaching an uncontrolled railway crossing?
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