通过对交通事故资料的统计分析，可以定量认识事故规律，从而为减少交通事故提供重要依据。由于交通事故信息具有鲜明的地理特征，对其描述或分析总离不开它的地理位置，交通事故的这种空间属性加上人们观察事物、认识事物时对“形”的需要，使得交通安全分析更需要以地图为背 Through the statistical analysis of traffic accident data, the law of accidents can be quantitatively identified, thus providing an important basis for reducing traffic accidents. Because of the distinctive geographical features of traffic accident information, its description or analysis can not be separated from its geographical location. This kind of spatial attribute of traffic accident, coupled with the observation of things by people and the need of “shape” when understanding things, makes traffic safety Analysis needs more to map back