Alabama The use of hazard lights is permitted while driving unless otherwise posted.

Alaska The use of hazard lights is not permitted while driving.

Arizona Hazard light use is not permitted while driving except in an emergency situation.

Arkansas Hazard light usage is not permitted while driving except to indicate a traffic hazard.

California Hazard light use is not permitted while driving except to indicate a traffic hazard.

Colorado Hazard light use is not permitted while driving except if the vehicle speed is 25 mph or less.

Connecticut Hazard light use is permitted while driving unless otherwise posted.

Delaware Hazard light use is not permitted while driving except to indicate a traffic hazard.

District of Columbia Hazard light use is permitted while driving.

Florida The use of hazard lights is not permitted while driving.

Georgia The use of hazard lights is permitted while driving.

Hawaii Hazard light use is not permitted while driving.

Idaho Hazard light use is not permitted while driving except to indicate the presence of a vehicular traffic hazard requiring unusual care in approaching, overtaking or passing.

Illinois The use of hazard lights is not permitted while driving.

Indiana Hazard light use is not permitted while driving except in emergency situations.

Iowa The use of hazard lights are not permitted while driving except to indicate a traffic hazard.

Kansas Hazard light use is not permitted while driving.

Kentucky Hazard light use is permitted while driving.

Louisiana Hazard light use is not permitted while driving.

Maine Hazard light use is not permitted while driving unless to indicate a traffic hazard.

Maryland Hazard light use is not permitted while driving except in emergency situations.

Massachusetts Hazard light use is not permitted while driving.

Michigan Hazard light use is permitted while driving.

Minnesota Hazard lights are not permitted while driving except to indicate a traffic hazard.

Mississippi Hazard light usage is permitted while driving.

Missouri Hazard light usage is permitted while driving.

Montana Hazard lights are not permitted while driving except to indicate a traffic hazard.

Nebraska Hazard light use is permitted while driving.

Nevada Hazard light usage is not permitted while driving.

New Hampshire Hazard light use is permitted while driving.

New Jersey The use of hazard lights is permitted while driving.

New Mexico Hazard light use is not permitted while driving.

New York Hazard light use is permitted while driving unless otherwise posted.

North Carolina Hazard light use is permitted while driving unless otherwise posted.

North Dakota Hazard light use is permitted while driving unless otherwise posted.

Ohio Hazard light use is not permitted while driving except when a hazardous condition is present.

Oklahoma Hazard light use is not permitted while driving except in emergency situations and to indicate a traffic hazard.

Oregon Hazard light use is permitted while driving unless otherwise posted.

Pennsylvania Hazard light use is permitted while driving.

Rhode Island Hazard light use is not permitted while driving.

South Carolina Hazard lights may be used while driving for the purpose of warning the operators of other vehicles of the presence of a vehicular traffic hazard requiring the exercise of unusual care in approaching, overtaking or passing.

South Dakota Hazard light use is permitted while driving.

Tennessee Hazard light use is not permitted while driving except in emergency situations.

Texas Hazard light use is permitted while driving.

Utah Hazard light use is permitted while driving.

Vermont Hazard light use is permitted while driving.

Virginia Hazard light use is not permitted while driving except for emergency vehicles, stopped or slowed vehicles to indicate a traffic hazard, when traveling as part of a funeral procession, or traveling slower than 30 mph.

Washington Hazard light use is not permitted while driving except to indicate a traffic hazard.

West Virginia Hazard lights are not permitted while driving except in emergency situations.

Wisconsin Hazard lights are not permitted while driving except to indicate a traffic hazard or when a hazardous condition is present.

Wyoming Hazard light use is permitted while driving.