Ontario Class F Practice Test · 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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