Headlights must be turned on from sunset to sunrise. If you are using your high beams, you must dim your lights when an oncoming vehicle is within:

100 feet.
500 feet.
250 feet.
400 feet.
Explanation

Dimming your headlights when approaching an oncoming vehicle helps avoid blinding the other driver. By dimming headlights when an oncoming vehicle is within 500 feet, drivers ensure that their lights do not dazzle or impair the vision of other drivers, reducing the risk of accidents.

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