Description A detailed traffic light, textures are included. History On 10 December 1868, the first traffic lights were installedoutside the British Houses of Parliament in London, by the railway engineer J.P. Knight. They resembled railway signals of the time, with semaphore arms andred and green gas lamps for night use. The gas lantern was turned with a leverat its base so that the appropriate light faced traffic. Unfortunately, itexploded on 2 January 1869, injuring the policeman who was operatingit. The modern electric traffic light is an American invention. Asearly as 1912 in Salt Lake City, Utah, policeman Lester Wire invented the firstred-green electric traffic lights. On 5 August 1914, the American Traffic SignalCompany installed a traffic signal system on the corner of 105th Street andEuclid Avenue in Cleveland, Ohio. It had two colours, red and green, and abuzzer, based on the design of James Hoge, to provide a warning for colourchanges. The design by James Hoge (USPTO # 1251666 Sept. 22, 1913) allowedPolice and Fire stations to control the signals in case of emergency. The firstfour-way, three-colour traffic light was created by police officer William Pottsin Detroit in 1920. In 1923, Garrett Morgan patented a traffic signal device,although it was not a precursor of the modern traffic light. The first interconnected traffic signal system was installed inSalt Lake City in 1917, with six connected intersections controlledsimultaneously from a manual switch. Automatic control of interconnected trafficlights was introduced March 1922 in Houston, Texas. The first automaticexperimental traffic lights in England were deployed in Wolverhampton 1927.
Date added: Aug 06, 2015
Last update: Dec 20, 2015
Product id: 55c3592fccff75b0688b474e