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