Traffic light became a modern culture in everywhere now even the developing countries have traffic lights. Traffic lights are one of the most revolutionary inventions, however, before the traffic lights was invented, people use to control the flow of the traffic by placing a man in the middle of the intersection directing the vehicles. This type traffic police is still popular in so many countries around the world and it is called Traffic Police. The Traffic Police would be standing on his or her feet all day long hours. It is a risk job because any time a vehicle may get out of control and hit the person.
Before Traffic Light
The beginning of traffic light invention
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