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Wiktionary:
1. a signalling device positioned at a road intersection or pedestrian crossing to indicate when it may be safe to drive, ride or walk, using a universal colour code

ISO 23150:
traffic relevant, official lights
Note. One traffic light consists of one or several light spots with different light colours and shapes.
Example: a pedestrian traffic light

näiteid
https://duckduckgo.com/?q=%22traffic+light%22&t=h_&iar=images&iax=images&ia=images

ülevaateid
https://en.wikipedia.org/wiki/Traffic_light