Also called "tattle-tale lights", they blink when a light turns red and helps cops see from any angle if a driver runs that red light. They are cheaper than installing.

MINNEAPOLIS (WCCO) — You may have noticed new blue lights popping up near traffic signals all over the metro. They are small, generally.

The blue lights are known as 'Omni Directional Law Enforcement Confirmation Lights' and will help officers determine when a traffic signal light.

Don't feel bad, Sarah—that blue light has caused more misunderstandings than my hastily recalled children's book, Horton Hires a Hooker.

Have you noticed a small blue light installed on top of some traffic signals around Manhattan? The lights are used to help with enforcement of.

Blue lights will be making an appearance at intersections in Bismarck Lights and they're used to alert officers when traffic lights turn red.

Please look at the time stamp on the story to see when it was last updated. Prairie Village police using blue lights to stop drivers who run red.

A confirmation light is a small, blue light mounted to the top, bottom or rear of a traffic signal head and will come on simultaneously with the red light of the traffic .

The lights will be blue in color, omnidirectional and mounted on top of confirmation light, located on the underside of the traffic signal pole.

Blue traffic lights is what happens when you have one word for two colors.