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Vehicle Headlight Law


    • Most states require headlights turned on at, or just before, sunset to, or just prior to, sunrise. Headlights are also required when driving in fog, through smoke, or any other time natural light conditions are darkened.


    • Some states, including Tennessee, Ohio and Pennsylvania require headlights on any time windshield wipers are in use, either continuously or intermittently. This would be during periods of snow, rain, sleet or mist.


    • Headlights are to be adjusted so they can clearly determine an object or person 200 feet forward. They are to be aimed so they are not causing a bright glare to the driver of an oncoming vehicle in front of the headlights.

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