This is how the journey of traffic lights started

 ➡️The first traffic light was installed on 10 December 1868 in front of the British House of Parliament in London.This light was installed by JK Knight, a railway engineer.



➡️ At that time only 2 colors were used in traffic lights, red and green.This light was run by gas, but it was not safe, because it used to explode due to gas leaking out of it.

➡️ After this the first electric traffic light was installed on 5 August 1914.

➡️ This light was designed by James Hogg. The light was installed by the US Traffic Signal Company between East 105th Street and Euslid Avenue in Cleveland, Ohio. In this light also only green and red color was used, and 1 buzzer was installed, which gave signal before changing the light.



➡️ After this, the first traffic light with 3 colors was made in the year 1920. This light was made by police officer William Potts.

➡️ The first electric traffic light in the world has completed its 101 years in the year 2017.

➡️ In the year 1996, the traffic light running like a clock was used.

➡️ Clock-like traffic lights were first installed in Hampton and Virginia.


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