Police cars have various lights they use to communicate with others on the road, but at times it can be hard to tell what exactly they're conveying. Red and blue flashing lights are standard and ...

"Not only does it deter crime, it also allows residents to flag down an officer that they might not otherwise know is in the ...

Kansas City police may activate blue lights in patrol cars while officers are inside. City leaders say it could boost ...

Looking into your rearview mirror and seeing the flashing lights of a police car behind you is likely one ... officers use flashing red lights and blue lights when initiating a traffic stop ...

(WHTM) — Emergency vehicles have a multitude of ways to get our attention, including flashing lights, horns and sirens. But why do police cars use red and blue lights? Why not red and purple ...