When driving in fog, rain, or snow, use:
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High beam headlights.
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Parking lights only.
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No headlights.
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Low beam headlights.
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Explanation
If you are driving in heavy fog, rain, or snow, always use low beam headlights. Keeping your high beams on can cause the light to reflect back at you, reducing your visibility due to the glare. Low beams not only improve your own visibility but also ensure that other drivers are not blinded by your headlights.
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