What is the origin of the traffic lights?
It is surrounded by a circular three color projector, was installed in New York City five Street on a tower, since its birth, the city traffic is improved greatly.
With the development of various means of transportation and the need of traffic control, the first "three color lights" (red, yellow and green) were born in 1918, in.
. Later in New York and Chicago and other cities, there have been re traffic lights.
It was not until 1914 that the traffic light was first restored in Cleveland, the United States, but at this point it was an electric signal light".
