Today's first traffic light in the history of the car
Release date: 2017-11-27 Source: led network share: 
Traffic lights , commonly known as "traffic lights", are the road infrastructure that every traffic participant must touch today, and its birth dates back to the birth of the car. On December 9, 1868, there was a red and green lampshade. The gas lamp lit up at the intersection outside the Parliament Building in London, England, and the first traffic light in the history of the world was born.
However, the first traffic light "on duty" was exploded in less than a month because of the gas leak, and the police who controlled it were seriously injured (said that they were dereliction of duty), and the British government removed it. Since then, traffic lights have been silent for decades, until 1912, when Salt Lake City police officer Lester Wyle developed a power signal, it returned to the historical arena.
Label: Today's first traffic light in the history of the car came out
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