Please post the name and date.

Here, let me google that for you.

https://www.biography.com/inventor/garrett-morgan

FTA: The first Black man in Cleveland to own a car, Morgan worked on his mechanical skills and developed a friction drive clutch. Then, in 1923, he created a new kind of traffic signal, one with a warning light to alert drivers that they would need to stop, after witnessing a carriage accident at a particularly problematic intersection in the city. Morgan quickly acquired patents for his traffic signal—a rudimentary version of the modern three-way traffic light—in the United States, Britain and Canada, but eventually sold the rights to General Electric for $40,000.