to thank for the yellow light, but as a municipal employee he could not patent his invention. By 1930, all major American cities and many small towns had at least one electric traffic signal ...

The world's first electric traffic light was installed in Cleveland, Ohio, in 1914. It would be another 12 years before London would adopt them. The post The World’s First Traffic Light Looked ...

With cars came traffic, and with increased traffic came collisions. The first electric traffic light was invented and installed in Salt Lake City in 1912 by Lester Wire, a police detective who had ...