It’s like a traffic light for your home.

(WHTM/NEXSTAR) – On many traffic signals found throughout the United States, there is a small light that is placed in between or off to the side of the traffic signal lights. Sometimes you see them ...

Pull up to an intersection at a red light, eyes ahead, scanning left and right. Maybe the blue light from the traffic signal caught your eyes, like it did for Bob Thompson of Mill Creek. “What is the ...

Add Yahoo as a preferred source to see more of our stories on Google. (WHTM/NEXSTAR) – On many traffic signals found throughout the United States, there is a small light that is placed in between or ...

If you've ever wondered how traffic lights work and how they can detect your car, you've probably also been curious about those small blue lights mounted above the signals themselves. These blue ...

PENNSYLVANIA (WHTM) — On many traffic signals found throughout the United States and Pennsylvania, there is a small light that is placed in between or off to the side of the traffic signal lights.