traffic lighttraffic light
a mechanical device consisting of a set of signal lights operating in sequence (usually green to yellow to red and back to green), placed at intersections to regulate traffic
A road signal for directing vehicular traffic by means of colored lights, typically red for stop, green for go, and yellow for proceed with caution. Also called stoplight, traffic signal.
(plural traffic lights)
- A signalling device positioned at a road intersection or pedestrian crossing to indicate when it may be safe to drive, ride or walk, using a universal colour code.
- (philately) The coloured dots on stamp sheet margins printed with offset litho or photogravure methods, used by the printers to check colour accuracy.
- Alternative spelling of traffic light.