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.
Shurin also said the city failed to formally train Biscari to drive a fire apparatus and did not install a system that changes a traffic light to green for an oncoming emergency vehicle. Judy L. Thomas, Kansas City Star, 16 Sep. 2025 In one video posted online, a Tesla initially stops at a crossing, but then, after the gate arms begin to lower, a set of traffic lights farther down the road turns green and the car tries to proceed through the arms seconds before a train arrives. David Ingram, NBC news, 16 Sep. 2025 Dedicated lanes crisscross the city, traffic lights are timed for bicycles and drivers are accustomed to sharing the road. David Nikel, Forbes.com, 13 Sep. 2025 The FreeRide is available seven days a week and shuttles run every traffic light cycle during peak periods. Judith Kohler, Denver Post, 12 Sep. 2025 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 23 Sep. 2025.

Kids Definition

traffic light

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

More from Merriam-Webster on traffic light

Last Updated: - Updated example sentences
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