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History Of Traffic Lights || American Gypsy
Автор: American Gypsy
Загружено: 2023-04-11
Просмотров: 9092
Описание:
The first traffic light used in the United States was in Cleveland, Ohio in 1914. The traffic light was invented by James Hoge, who was a police officer in Salt Lake City, Utah. The traffic signal in Cleveland was manually operated, meaning that a police officer or traffic director had to turn it on and off.
The first automatic traffic signal was developed by Garrett Morgan, an African-American inventor, in 1923.
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