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Traffic signs in now plays an indispensable role in road traffic. Especially along with the increase of car ownership, traffic signs can provide necessary guide for pedestrians and drivers, car according to the provisions of the traffic rules, orderly traffic. Traffic standard

traffic signs in the current road traffic plays an indispensable role. Especially with the increase of the number of cars, traffic signs can provide necessary guidance for pedestrians and drivers, make people and cars can be orderly in accordance with the rules of the road traffic. Traffic signs played such a large role, they are how to develop? In 1901, the federation in gloucester bud at the top of the mountain has set up a special warning signs the world's first car. This can be considered to be the earliest traffic signs. In 1903, the British government has issued a lt; Gt car regulations. Of traffic signs made some provisions of China, which is on the board draw a diameter of 457 mm 18 inches of white to represent the speed limit. Red circle said ban; Red triangle warning; Diamond said the crossroads, dangerous corner there and turn. However, these rules have not accepted by all of Britain's local authority, so the time of the traffic signs are not unified, and often cause confusion. That same year, under the promoting of the French federation, France as the world's first nationwide use unified car traffic signs. These French traffic signs are written in white paint on a black board. Turn to the left; ，； To the right; ，； Bridge; ，； Dangerous uphill road; Like to remind the driver pay attention to the text. Held in Paris in 1908, the first international conference roads, unified topic of traffic signs have been proposed, hope that the implementation of unified international traffic signs. But the meeting failed to reach agreement. On December 21, 1934, the then China's interior ministry announced the first in the history of our country land traffic regulations. Among them, the road traffic signs ordinance provides for three types of signs, a total of 27 kinds, namely, 11 kinds of prohibited mark, 10 kinds of warning sign and indication of six. In 1935, 'united traffic control device handbook' published the first edition, recommended to the United States uniform traffic sign production methods and standards. The manual even recommended use. Luminescent material; Traffic signs, to improve traffic safety condition at night. In 1951, after the founding of new China, China's Ministry of Public Security issued provisional regulations on the urban road traffic management, including traffic signs. In the meantime, the ministry also announced the road traffic signs. Issued in 1955, the Ministry of Public Security of the urban traffic rules, the provisions of the three categories of 28 kinds of traffic signs, including eight kinds of directional signs, four types of warning signs, and 16 kinds of logo is forbidden. In 1968, the United Nations announced, the road traffic and road signs and signals agreement as the basis of all countries to develop traffic signs. Since then, countries of traffic signs on the classification, colors, shapes and design gradually toward the international unification. In the European Union, the United Nations and other international organizations, with the help of more and more countries joined the international road traffic signs and signals of uniform motion, and in one thousand by new attempts to realize international convenient traffic. In 1972, the ministry of communications and the Ministry of Public Security jointly issued a road traffic laws and regulations, will increase the number of traffic signs to 34, including 9 indicators, 7 warning mark and 18 prohibited mark. In 1986, the national bureau of standards approval and issued national standard GB5768 - 86 'the road traffic signs and marking'. In 1999, the state bureau of quality and technical supervision approved and issued a revised national standard GB5768 - '1999' road traffic sign and marking.