Looking into your rearview mirror and seeing the flashing lights of a police car behind you is likely one of the last things you want to see as a driver. After all, most of us associate those flashing ...

Law enforcement agencies now use constant red-and-blue lights on patrol vehicles—not for emergencies but to signal presence ...

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 we ...