Lester Wire

Lester Farnsworth Wire (September 3, 1887–April 14, 1958) is credited with the invention of the electric traffic light in 1912 in Salt Lake City. Wire worked as a detective for the Salt Lake City police force. The original traffic light, based on a semaphore system, had been invented in London in 1868 by John Peake Knight but had not been a success.The earliest known patent for a traffic light in the USA was U.S.Patent # 1,251,666 issued January 1, 1918, to J.B. Hoge of Cleveland, Ohio.

Personal facts

Birth dateSeptember 03, 1887
Date of deathJanuary 01, 1957
Resting place
Salt Lake City Cemetery
Known for
Traffic light


Lester Wire on Wikipedia