» When driving in fog, you should turn on your high-beam headlights.

When driving in fog, you should turn on your high-beam headlights.

False.
True.
Explanation

Fog can greatly reduce your visibility. Using high-beam headlights can actually exacerbate the problem by reflecting light off the water droplets in the fog, creating a blinding effect. When driving in fog, reduce speed and use low beam headlights. Low beams better illuminate the road and objects ahead without causing glare or reducing visibility further.

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This question appears in the following DMV practice tests:
District of Columbia DMV Practice Test 1South Carolina DMV Practice Test 6Utah DMV Practice Test 12Georgia DMV Practice Test 15Minnesota DMV Practice Test 17Iowa DMV Practice Test 20