The development history of mobile traffic lights you know?

The development history of mobile traffic lights you know?

    In the daily travel, mobile signal lamp, which is what we often say that the traffic lights have become an essential tool for the traffic vehicles, you can understand how much of the mobile signal light? Here is to explain its history:

    Mobile signal lights, this technology has emerged in nineteenth Century. In 1858, the main street in London, England installed to coal gas as the source of red, blue and white mechanical wrench type signal lamp, with access to the command of the carriage. This is the first traffic light in the world. In 1868, British Mechanical Engineer Nait in the square in front of the houses of Parliament in London, Westminster, the installation of the world's first gas lights. It consists of red and green with two rotary Square Glass Lantern, red means "stop", "Green said that". In January 2, 1869, the gas explosion, so that the police were injured, then be canceled.

Electric start traffic lights appear in the United States, the red and green traffic lights from red, green and yellow tricolor circular light projecting device composed, 1914 began installation in New York City on the 5th street one of the towers. The red light means "stop", the green light means "go"".

    It is because of the appearance of traffic lights, our daily traffic to normal operation, traffic lights has become a tool we can not do without.

The above information is provided by the traffic signal light