Alabama
Headlights are required to be on when wipers are in use or visibility is less than 500 feet, as well as 30 minutes after sunset and 30 minutes before sunrise.
Headlights are required to be on when wipers are in use or visibility is less than 500 feet, as well as 30 minutes after sunset and 30 minutes before sunrise.
Headlights are required to be on when speed exceeds 45 mph on designated highways or when visibility is less than 1000 feet.
Headlights are required when visibility is less than 500 feet.
Headlights are required to be on when wipers are in use or visibility is less than 500 feet.
Headlights are required to be on when wipers are in continuous use or visibility is less than 1000 feet.
Headlights are required to be on when visibility is less than 1000 feet.
Headlights are required to be on in conditions of insufficent light/adverse weather or when visibility is less than 1000 feet.
Headlights are required to be use when wipers are in use or visibility is less than 1000 feet.
Headlights are required to be on when visibility is less than 500 feet.
Headlights are required to be on when visibility is less than 1000 feet or in conditions of insufficient light/adverse weather
Headlights are required to be on when visibility is less than 500 feet and in conditions of insufficient light/adverse weather.
Headlights are required to be use when visibility is less than 200 feet.
Headlights are required to be on when visibility is less than 500 feet.
Headlights are required to be on when wipers are in use or visibility is less than 1000 feet.
Headlights are required to be on when visibility is less than 500 feet.
Headlights must be on when visibility is less than 500 feet or in conditions of insufficient light/adverse weather.
Headlights are required to be on due to insufficient light or unfavorable atmospheric conditions, including smoke or fog, if visibility is less than 1000 feet, or when windshield wipers are in continuous use as a result of rain, sleet, or snow.
Must use low beams at 100 feet and high beams at 350 feet or greater.
Headlights are required to be on when wipers are in use.
Headlights are required to be on when wipers are in use, visibility is less than 1000 feet, or in conditions of insufficient light/adverse weather.
Headlights must be used when wipers are in use or when visibility is less than 1000 feet.
Headlights are required to be on one half an hour after sunset to one half an hour before sunrise, and during any other period when visibility is reduced by atmospheric conditions, such as rain, snow, fog, or when wipers are in use.
Headlights are required to be on when visibility is less than 500 feet.
Headlights must be on in conditions of insufficient light/adverse weather.
Headlights are required to be on when visibility is less than 500 feet.
Headlights are required to be on when visibility is less than 500 feet, or any time the weather conditions require usage of the motor vehicle’s windshield wipers to operate the vehicle in a careful and prudent manner, including in fog.
Headlights are required to be on if visibility is less than 500 feet and in conditions of insufficient light/adverse weather.
Headlights are required to be used when visibility is less than 500 feet.
Headlights are required to be on when visibility is less than 1000 feet.
Headlights are required to be on when visibility is less than 1000 feet or in conditions of insufficient light/adverse weather.
Headlights are required to be on when wipers are in use, visibility is less than 500 feet, or in conditions of insufficient light/adverse weather.
Headlights are required to be on when visibility is less than 500 feet.
Headlights are required to be used when windshield wipers are being used, when visibility is less than 1000 feet or when there is insufficient light or adverse weather.
Headlights must be used when windshield wipers are in use or when there is insufficient light of at least 400 feet.
Headlights must be used when visibility is less than 1000 feet or when there is insufficient light/adverse weather.
Headlights must be used when wipers are in use, when visibility less than 1000 feet, or in conditions of insufficient light/adverse weather.
Headlights must be used when visibility less than 1000 feet or in conditions of insufficient light/adverse weather.
Headlights must be used when visibility less than 1000 feet.
Headlights must be used when wipers are in use, when visibility is less than 1000 feet and in conditions of insufficient light/adverse weather. Headlights must be turned on in construction zones. Snow and ice must be removed from a vehicle prior to operation.
Headlights must be used in conditions of insufficient light/adverse weather, when wipers are in use, and when visibility is less than 500 feet.
Headlights must be used when wipers are in use.
Headlights must be used when visibility is less than 200 feet.
Headlights are required to be on in conditions of insufficient light/adverse weather and when visibility is less than 200 feet.
Headlights must be used when visibility is less than 1000 feet.
Headlights are required to be on when visibility is less than 1000 feet or in conditions of insufficient light/adverse weather.
Headlights must be used in conditions of insufficient light/adverse weather, or when visibility is less than 150 feet, as well as 30 minutes after sunset and 30 minutes before sunrise.
Headlights must be used when wipers are in use or when visibility is less than 500 feet.
Headlights are required to be on when visibility is less than 1000 feet.
Headlights must be used when visibility less than 500 feet and in conditions of insufficient light/adverse weather.
Headlights must be used when visibility is less than 500 feet.
Headlights are required to be on when visibility is less than 1000 feet or in conditions of insufficient light/adverse weather.
Headlights are required when visibility is inadequate.
Headlights are required to be used when visibility is 150m or less.
Headlights are required to be used when visibility is 150m or less.
Headlights are required to be used when visibility is 60m or less.
Headlights are required to be used when visibility is 150m or less.
Headlights are to be used one-half hour before sunset to one-half hour after sunrise and when visibility is 150 m or less.
Headlights are required to be used at all times.
Headlights are required to be used at all times.
No person shall operate a motor vehicle on a highway during the period from 1/2 hour after sunset to 1/2 hour before sunrise or at any other time when conditions of poor visibility exist, unless the headlights and other prescribed lights are in use.
Headlights are required to be used when conditions warrant.
Headlights are required to be used when visibility is 500 feet or less.
Headlights are required to be used when conditions warrant.
Headlight use is required for the period of one-half hour after sunset to one-half hour before sunrise or at any other time when conditions of poor visibility exist.
Headlights are required to be used at all times.