What's the point of a traffic light?
the first member of the family lights was born in London, Capitol Square, by the then British engineers Hart design and manufacture of the lamp post is 7 meters high, hanging on the lantern -- the traffic lights a red, green and white, this is the first city street lamp lights
Later, the parliament building in London before the carriage rolled frequent accidents, so people inspired by the red and green installed
. Among them, a red woman that I have to get married, a green woman is unmarried.
At the beginning of nineteenth Century, in the middle of the city of York, red and green represent the different status of women.
