Based on the world record nomination from America Records Institute (AMRI) and Decision No. WK/USA.INDIA/863/2022/No.319, World Records Union (WorldKings) officially declared Lester Wire Farnsworth as “World's first electric traffic light creator” on June 21st, 2022.
Lester Wire was born on September 3, 1887 in Salt Lake City, Wyoming, United States. In 1910, Lester joined the Salt Lake City Police and was appointed as head first traffic squad in 1912. At that time, patrolmen were assigned to stand on small platforms and to be fair, would time traffic each way. Not wanting his soldiers to suffer under bad weather, he created his first electric traffic signal.
The first prototype was a wooden box with a pitched roof that contained red and green lights on all four sides. It was mounted on a pole, wired to the electric lines of the trolley cars, and operated manually by a patrolman who could sit in a booth on the side of the road. Because of their appearance, the traffic light became known as "Wire's bird cage", "Wire's pigeon house."
Five years after Wire’s invention was first used, Salt Lake City had the first interconnected traffic signal system in the United States. Wire’s light was automated in 1924. He continued to improve his design, even after he moved on to detective work. His design was eventually made from the smokestack of a locomotive engine and durable metal, which made it more durable.
According to Wikipedia, edubilla.com and slcdocs.com. Source of photo: internet