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.
The suspect, who was traveling west on 9th Street, approaching Benton Boulevard, failed to stop for a red traffic signal and collided with a blue pickup truck traveling south on Benton Boulevard, police said in a news release. Rashad Alexander, Kansas City Star, 2 Jan. 2026 According to the owner, the vehicle managed navigation, lane changes, traffic signals, and merging largely on its own, relying on one of Tesla’s latest FSD software versions. Prabhat Ranjan Mishra, Interesting Engineering, 2 Jan. 2026 If a traffic signal is malfunctioning, motorists should treat the intersection as a four-way stop, Casey told the Observer. Evan Moore, Charlotte Observer, 31 Dec. 2025 Typically, Waymo’s software treats deactivated traffic signals as four-way stops, but the traffic volume overwhelmed the system. Stuart Dyos, Nashville Tennessean, 30 Dec. 2025 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 Jan. 2026.

Kids Definition

traffic signal

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

More from Merriam-Webster on traffic signal

Last Updated: - Updated example sentences
Love words? Need even more definitions?

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