Who invented traffic signals? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 and 12 Students CBSE Exams.

Who invented traffic signals?

The first traffic controllers were foot patrolmen. Initially they directed traffic using their hands and later they used hand-operated traffic lights. In the early 1920s automatic traffic lights were used for the first time. In 1927, traffic-actuated controllers were patented. These traffic lights could adjust to the traffic passing through an intersection at a particular time.