» When driving in fog, you should use your high beam headlights.

When driving in fog, you should use your high beam headlights.

False.
True.
Explanation

Using high beam headlights in fog can actually reduce visibility rather than improve it. High beams direct light up and into the fog, causing the light to bounce back into the driver's eyes, creating glare and making it even harder to see ahead. Low beam headlights, on the other hand, illuminate the road closer to the vehicle, which helps to improve visibility in foggy conditions.

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This question appears in the following DMV practice tests:
Colorado DMV Practice Test 2Utah DMV Practice Test 3Georgia DMV Practice Test 13Iowa DMV Practice Test 14Arkansas DMV Practice Test 14District of Columbia DMV Practice Test 18