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Question

Who invented traffic lights?

Answer 1

On 10 December 1868, the first traffic lights were installed outside the British Houses of Parliament in London. They resembled railway signals of the time, with semaphore arms and red and green gas lamps for night use. The gas lantern was turned with a lever at its base so that the appropriate light faced traffic. Unfortunately, it exploded on 2 January 1869, injuring the policeman who was operating it.

The modern electric traffic light is an American invention. As early as 1912 in Salt Lake City, Utah, policeman Lester Wire set up the first red-green electric traffic lights. On 5 August 1914, the American Traffic Signal Company installed a traffic signal system on the corner of 105th Street and Euclid Avenue in Cleveland, Ohio. Based on the design of James Hoge, it had two colors, red and green, and a buzzer to provide a warning for color changes. The first three-color traffic lights were introduced in New York and Detroit in 1920. In 1923, Garrett Morgan patented a traffic signal device, although it did not directly impact the evolution of the modern traffic light.

The first interconnected traffic signal system was installed in Salt Lake City in 1917, with six connected intersections controlled simultaneously from a manual switch. Automatic control of interconnected traffic lights was introduced March 1922 in Houston, Texas. The first automatic experimental traffic lights in England were deployed in Wolverhampton in 1927.

Answer 2

It was William L Potts

http://www.ideafinder.com/history/inventions/trafficlight.htm

Answer 3

Here is your answer to that question

Police Officer William L. Potts of Detroit, Michigan

http://www.ideafinder.com/history/inventions/trafficlight.htm

Walt

Answer 4

Who invented the pelican crossing?

Answer 5

I think it was a fellow by the name of George Westley Traffic, if I remember my history lessons correctly.

Either that or Garrett Morgan -> http://www.ideafinder.com/history/inventors/morgan.htm

Answer 6

You will find out when that happen and a lot more, hope this helps.

http://en.wikipedia.org/wiki/Traffic_lights