The role of traffic barrier
The protection of roadside buildings, pedestrians, drivers and passengers in the car safety, both at the same time, the increase of traffic safety induced by the sight of the driver and beautification highway environment effect.
Based on the great promotion and maintenance function of the guardrail on the economic, social and traffic safety of the expressway, many countries have done a lot of work on the research and application of the guardrail. According to [6] records, in 1987 1992 5, Western Europe traffic increased by 16%, while in the period from 1988 to 1992, the German traffic accident rate decreased by 70%; France and Spain also decreased about 20%; the British death rate by 1, 8 people / million to 1.1 vehicles / million vehicles. In recent years, the loss of life and property caused by traffic accidents in western countries has gradually declined, and the emergence and application of all kinds of new traffic safety barriers can not be ignored.
The so-called traffic guardrail is a set of parallel on both sides of the road or in the central isolation belt and arresting highway facilities, its main function is non normal vehicles beyond the road or crossing the central divider into on the occurrence of traffic accidents caused by lane to prevent drivers because of errors or other reasons
