Road traffic accident is a worldwide social problem. The indexes of road traffic accident in China are growing, the traffic safety situation deteriorating, traffic accident has become a serious important factors to influence the social development and people's life, and caused great concern to the government and the public. Practice has proved that domestic and international traffic safety management, establishing the system of traffic safety evaluation index of perfect, scientific, regular evaluation of specific regional traffic safety level, the analysis of main factors affecting traffic safety, is to improve the safety management level of traffic, the important means to maximize the prevention of traffic accidents.(⊙o⊙)…O(∩_∩)O~望采纳...