traffic light

noun

: a visual signal (such as a system of colored lights) for controlling traffic

Examples of traffic light in a Sentence

Take a left at the traffic light.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The road was closed in both directions between Franklin Road and Emerald Street, and traffic lights were affected between Franklin and Fairview Avenue, police said in a social media post. Shannon Tyler, Idaho Statesman, 4 Feb. 2026 Rickey Swaniger, 56, of Sterling, died on impact when the truck sped down an off-ramp from Interstate 25 across Yale Avenue into an abutment, taking out traffic lights and narrowly missing vehicles stopped along the ramp. Alan Gionet, CBS News, 4 Feb. 2026 Waymo also faltered during a massive power outage in the same Bay Area city in December as self-driving cars froze, blocking intersections when traffic lights went out. Talia Soglin, Chicago Tribune, 2 Feb. 2026 Driving in the city has become more perilous as traffic lights are frequently out at major intersections. Patrick Oppmann, CNN Money, 29 Jan. 2026 See All Example Sentences for traffic light

Word History

First Known Use

1912, in the meaning defined above

Time Traveler
The first known use of traffic light was in 1912

Browse Nearby Words

Cite this Entry

“Traffic light.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/traffic%20light. Accessed 6 Feb. 2026.

Kids Definition

traffic light

noun
: a visual signal (as a system of green, yellow, and red lights) for controlling traffic

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