traffic signal

noun

: a signal (such as a traffic light) for controlling traffic

Examples of traffic signal in a Sentence

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.
Additional infrastructure over the years included widening 291, more traffic signals and a turning lane specifically for Costco. — Kansas City Star, 2 Oct. 2026 The developers agreed to work with the city and pay a share of the costs to improve traffic signals in the area, potentially widen roads to provide longer turn lanes, add bike lanes and high-visibility crosswalks, and widen sidewalks. — Camryn Dadey, Sacbee.com, 1 Oct. 2026 Public Works is preparing for 24-hour operations, monitoring low-water crossings, dams, roadways, debris and traffic signals while staging barricades for potential road closures. — Jacob Beltran, San Antonio Express-News, 30 Sep. 2026 Buses are equipped with Transit Signal Priority technology, which coordinates with traffic signals to allow more efficient movement through intersections. — Brian Sherrod, CBS News, 28 Sep. 2026 See All Example Sentences for traffic signal

Word History

First Known Use

1893, in the meaning defined above

Time Traveler
The first known use of traffic signal was in 1893

Browse Nearby Words

Cite this Entry

“Traffic signal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/traffic%20signal. Accessed 9 Oct. 2026.

Kids Definition

traffic signal

noun
: a signal (as a traffic light) for controlling traffic

More from Merriam-Webster on traffic signal

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!