Relating to: requirements for lighting on police vehicles.

This law requires all marked police vehicles to display blue lights on the passenger side (roof or interior) and red lights on the driver side, with all lights designed to be clearly visible from 500 feet in daylight or darkness. It also restricts when officers may use warning lights - only during emergencies, pursuits, fire responses, or when parked hazardously - and prohibits use otherwise. The bill, now effective as Wisconsin Act 39 (signed November 2025), directly affects all law enforcement agencies operating police vehicles in Wisconsin.