traffic light 1868

The First Stop Light

1868 BCE

Made in 1868 to help pedistrans walk across the street without fearing horses

The end of gas traffic light

1869

the gas traffic light was lite by a person every day.A Police man was injured by the Traffic Light and it was taken out of London.That was the end of the gas light.

First electric traffic light

1912

An American policeman, Lester Wire, who was concerned with the increasing traffic, came up with the idea of the first electric traffic light.because the gas light was not lite all the time so traffic got bad a lot of the time

First electric traffic light installed

1914

Based on Wire’s design, the lights were first installed in Cleveland, Ohio, at the corner of 105th and Euclid Avenue.

First three-colored four-way traffic lights

1920

A policeman named William Potts in Detroit, Michigan invented the first four-way and three-colored traffic lights. Apart from red and green, a third color – amber (or yellow) – was introduced.

First computerized traffic lights

1960

Over time, computers improved, and the traffic lights subsequently improved, and they could now monitor traffic and change lights accordingly.

First computerized traffic lights installed

1963

The first computerized traffic light was installed in Ohio