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Question:

When driving through dense fog, heavy rain, or snow in the daytime, you must switch on your

A
Explaination

Under Tennessee law, when you're driving through dense fog, heavy rain, or snow in the daytime, you must switch on your low-beam headlights. Ordinarily, high beams let you see farther than low beams. However, high beams can reflect off dense precipitation and cause glare.