Signal
Signal noun - An object intended to give public notice or warning.
Traffic light and signal are semantically related. In some cases you can use "Traffic light" instead a noun "Signal".
Traffic light
Traffic light noun - A visual signal to control the flow of traffic at intersections.
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Synonyms for Traffic light
Signal and traffic light are semantically related. You can use "Signal" instead a noun phrase "Traffic light".
Mutual synonyms
Both terms in one sentence
- Consider the following: if you're at an intersection where there's a traffic light, and it fails, if it "fails safe" then either it goes dark or all four directions show a red signal.
Source: Failsafe Failure -
In the anime adaptation of Ace Attorney, the three Signal Samurai which represent the colors of a traffic light are Red, Yellow, and Blue.
Source: Useful Notes / Green is Blue -
Handsome Rob, whilst trying to drive through the city as fast as possible to time the fastest possible escape route, is the second car in line stopped in the left turn lane at a red traffic light (note, this is a green arrow only turn signal).
Source: Film / The Italian Job (2003)
Cite this Source
Traffic light and Signal. (2016). Retrieved 2026, August 03, from https://thesaurus.plus/related/signal/traffic_light
Signal & Traffic light. N.p., 2016. Web. 03 Aug. 2026. <https://thesaurus.plus/related/signal/traffic_light>.
Traffic light or Signal. 2016. Accessed August 03, 2026. https://thesaurus.plus/related/signal/traffic_light.
Google Ngram Viewer shows how "signal" and "traffic light" have occurred on timeline