Class 4 Commercial Driver Practice · Question
What light setting should you use when driving a commercial vehicle through heavy fog?
Low-beam headlights should be used in fog. High beams reflect off the water droplets in the fog, causing glare and reducing visibility for the driver.
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Question: What light setting should you use when driving a commercial vehicle through heavy fog?
Answer options:
- High-beam headlights for maximum light
- Parking lights only to stay visible ✅ Low-beam headlights
- No lights, to avoid blinded other drivers
Correct answer: Low-beam headlights
Explanation: Low-beam headlights should be used in fog. High beams reflect off the water droplets in the fog, causing glare and reducing visibility for the driver.
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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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