“If a driver of a vehicle on a highway operates the vehicle’s windshield wipers for a continuous period of time because of impaired visibility resulting from unfavorable atmospheric conditions, the driver shall light the vehicle’s headlamps.”  In other words, if it’s raining or snowing, the vehicle’s headlights should be on while driving.

Enforcement is a secondary action and the fine is not to exceed $25.

Sec. 22-201.2