Table of Contents (click to expand)The First Traffic SignalThe First Electric Traffic LightsThe First Four-way And Three-colour Traffic LightsTraffic Lights That Detect Vehicle HonksThe Computerization Of Traffic LightsRain Sensing LightsThe Future Of Traffic Lights The first traffic signal was invented in 1868 by J.P. Knight. In 1912, the first electric traffic light was invented by Lester Wire. The modern traffic light still uses this T-shaped model with three different colors. Computers are used to predict traffic and change lights accordingly. Imagine a set of people having a heated discussion in a closed room. The conversation can turn into a complete … Continue reading The History And Evolution Of Traffic Lights