road traffic and safety signs

In 1968, the United Nations announced the "road traffic and safety signs, signals agreement" as a basis for countries to develop a traffic sign. Since then, traffic signs gradually developed countries to unify in the direction of the international classification, shape, color, pattern and so on. With the popularization and development of road motor vehicles, more and more countries and governments aware of the important role of traffic signs and markings, in some developed countries to lead and promote the use of these simple traffic control facilities to achieve the traffic safety and management technology continues to improve. Meanwhile, in the efforts to promote the European Union, United Nations and other international organizations, more and more countries joined the international road traffic signs, signals Unity Movement, trying to achieve the international transport facilities, to try new things.