| China's road safety is a very serious social problem, is the world's road traffic accident occurred on one of the largest. As social and economic growth and the rapid development of road transport, road traffic is growing rapidly, can not meet the level crossing has been gradually increasing traffic demand, Interchange has been used more and more road construction. As an important feature of Interchange complex, is the throat of the entire road which is also accident-prone locations, analysis and evaluation of their safety becomes significant.In human - vehicle - road three factors on the impact of traffic safety, road conditions tend to lead because it is not the direct cause of the accident was ignored. However, considering the road conditions in large part to traffic accidents, then the indirect effects of road conditions must not be overlooked. Factors about road conditions in this paper as an entry point to introduce the indirect effect of road factors as factors on the importance of traffic safety; Careful analysis of the impact of Interchange main factor of regional security, which focuses on analysis of factors including the main line of linear and linear ramp linear effect on traffic safety; norms and the actual situation according to various factors that should pay attention to the points in the design, Established based on road conditions, highway interchange evaluation system of regional security; Describes the speed, service levels and the relationship between traffic safety, given the level of speed and service model and calculation method; To propose a full perspective of road conditions with the relative angle of the road running the highway interchange comprehensive analysis of regional security. Finally, the East Wing of Zhejiang Expressway MaZhai hub, for example, a comprehensive introduction to the specific application of the method and the results of the analysis process and the proposed measures. |
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