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 . Also called 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.