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The traffic light manufacturer is talking about the past life
Traffic light: the epitome of civilized progress
The industrial revolution of the 18th century brought European countries into the steam age, with large volumes and high speed of steam trains, which became an essential means of transportation in industrial production. However, due to lack of relevant management experience, the transport power is not high, and the railway traffic signal comes into being. The steam train has a tight running time, so the planning of the traffic lights was originally intended to inform the driver that it might be the beginning of the traffic light. During the same period, the first transport vehicles on the roads of England were carriages, which were on the road, and were often in traffic accidents, especially in the horse-drawn buggy area of parliament. On December 10, 1868, the world's first traffic light was established at the crossroads of the parliament building. It was 7 meters high, and it was illuminated by burning the gas, and the difference was caused by the difference of the color of the lamp shade, which caused the light to stop at the red light and the green light. But the gas traffic light was only used for 23 days, killing a poor man because of the blast, and then was withdrawn.