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At first, the road lights installed switch switches on each pole, and workers still need to turn on and off every day. 3 years later, a number of street lamps were switched to a switch, which has been used in all cities throughout the country until 1950s.

Britain: human beings are trying to make artificial lighting on urban streets in the early fifteenth Century. In 1417, in order to brighten up the dark winter night in London, mayor Henry Barton issued an order calling for outdoor lighting. Later, his initiative was supported by the French. At the beginning of sixteenth Century, lamps and lanterns must be installed outside the windows of residential buildings in Paris. At Louis Xiv, there were many streetlights on the streets of Paris. In 1667, Louis Xiv, known as the "Sun King", formally promulgated the urban road lighting Ordinance. Legend has it that it is precisely because of the promulgation of this decree that Louis Xiv's rule was called "the age of light" in French history.