Controlling traffic

Controlling traffic

As cars multiplied, inventors  looked for ways to keep traffic moving safely. Electric traffic light began in 1914 in the American city of Cleveland. they had only two colours - red and green -and a buzzer, which sounded to warn when the lights were about to change reflective road studs, to separate lanes of traffic, ware 1933 inventors of English road repairer Percy .Shaw the eyes of car shining in his headlights in inspired the inventors - and gave it its familiar nickname 'car's eves'.