When you’re first in line at a light, it may be hard to see what the traffic lights are without straining your neck and leaning forward like a giraffe in heat. LightInSight solves your problem ...

But one time the red glass lens on a signal lamp dropped ... William Potts for the invention of the first traffic lights in Detroit in 1920. But back then they were still sequenced by an officer ...

It was while working on the police force in the 1920s, Potts’s daughter said, that her father designed and built the first automatic three-lens traffic light. At that time, only the red and ...