When driving in fog, drivers should:

Put their emergency flashers on.
Use high beam headlights.
Use low beam headlights.
Explanation

It is best to avoid driving in fog, but if you must, you should greatly reduce your speed and turn on your low beam headlights. Never use the high beams because the light from high beams will reflect back off the fog, causing glare and making it difficult to see ahead.

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