Red and blue lights are used on U.S. police cars for many reasons, but the main one is that they are highly visible and easily distinguishable from one another.

And police cars have red and blue lights. (WHTM) — Emergency vehicles have a multitude of ways to get our attention while driving; flashing lights, horns, and sirens.

Red and blue flashing lights are standard and we know that signifies an emergency, but if a police car has flashing yellow lights, for example, it means something else entirely.

The steady red and blue lights are meant to increase awareness that law enforcement is there, and unlike flashing emergency ...

The steady red and blue lights are meant to increase awareness that law enforcement is there, and unlike flashing emergency ...

HOUSTON (CW39) – The sight of blue police lights is a common yet powerful symbol in modern society. These lights are not only a tool for law enforcement but also serve as an important signal to ...

While it's true that police officers use flashing red lights and blue lights when initiating a traffic stop to signal to a driver that they should pull over, that's not the only color in their ...

Cruise lights are solid red and blue and appear dimmer than emergency lights, police say. But depending on the vehicle, the number of lights may vary slightly, with newer vehicles also featuring ...

Cruise lights are solid red and blue and appear dimmer than emergency lights, police say. But depending on the vehicle, the number of lights may vary slightly, with newer vehicles also featuring ...