traffic light

noun

1. a set of electrically operated signal lights used to direct or control traffic at intersections.

traffic light

noun

1. one of a set of coloured lights placed at crossroads, junctions, etc, to control the flow of traffic. A red light indicates that traffic must stop and a green light that it may go: usually an amber warning light is added between the red and the green

Word History and Origins

Origin of traffic light¹

First recorded in 1925–30

Example Sentences

I memorized traffic lights and places I might get hit by a car door.

From Los Angeles Times

The so-called "traffic light" coalition led by the chancellor has governed Germany since 2021.

From BBC

A three-way traffic light system would operate outside those hours so the road could be used.

From BBC

The court also heard that a woman driving behind the van as it stopped at a traffic light had seen a man in a white T-shirt and “pale pink gloves” roll out from underneath.

From BBC

The cameras can be fixed onto poles, traffic lights, buildings or bridges and mobile cameras are frequently mounted on police cars.

From Los Angeles Times

Related Words

• red light
• stoplight
• traffic control
• yellow light