Outdoor
Traffic lights, traffic signals, stoplights or robots are signalling devices positioned at road intersections, pedestrian crossings, and other locations to control flows of traffic. The world's first traffic light was a manually operated gas-lit signal installed in London in December 1868. It exploded less than a month after it was implemented, injuring its policeman operator. Earnest Sirrine from Chicago patented the first automated traffic control system in 1910. It used the words "STOP" and "PROCEED", although neither word was illuminated. Traffic lights follow a universal colour code which alternates the right of way accorded to users with a sequence of illuminating lamps or LEDs of three standard colours: gree, yellow and red.
Tags:
traffic , light , traffic light , stoplight , signal , device , pedestrian , car , crossing , red , yellow , green , free , 3d , model , download , free 3d
DOWNLOAD
FROM THIS CATEGORY
1087
FREE FILES
FOR DOWNLOADING
We’ll design for you new 3d models, for free!
Free 3d models
created by professional designers!