Abstract: Research on road traffic safety in Tibet can effectively reduce the number of traffic accidents in Tibet, reduce economic losses, and promote the work of ensuring people's livelihood. This paper uses the improved entropy weight-technique for order preference by similarity to an ideal solution (TOPSIS) method to construct the road traffic safety evaluation index system from six aspects: 100 000 population death rate, 10 000 vehicle death rate, 1 000 km death rate, average death rate per accident, fatality rate, and death rate per 100 million gross regional product to evaluate the road traffic safety in Tibet. The results show that there is a strong correlation between road traffic safety level and economic factors such as regional gross domestic product, motorization degree and road network length, and the current situation of road traffic safety in urban areas of Tibet also has great differences. Based on this, combined with the evaluation results of road traffic safety in Tibet's urban areas, we strive to use relevant data to describe the current situation of road traffic safety in Tibet's urban areas, and provide a strong basis for the relevant departments to introduce traffic safety measures.

Key words: road traffic in Tibet; entropy weight-TOPSIS method; traffic accidents; safety evaluation

摘要： 研究西藏道路交通安全状况可以有效减少西藏交通事故的发生次数，降低经济损失， 促进民生保障工作进行。文章运用改进的熵权-逼近理想解排序法（TOPSIS），从十万人口死 亡率、万车死亡率、千公里死亡率、平均每起事故死亡人数、致死率、每亿地区生产总值死 亡人数六个方面构建道路交通安全测评指标体系，对西藏道路交通进行安全性测评。结果表 明，西藏各市区道路交通安全水平与地区生产总值、机动化程度、路网长度等经济因素有较 强的相关性，各市区道路交通安全现状也具有较大差异。基于此，结合西藏各市区道路交通 安全测评结果，力求用相关数据刻画西藏各市区的道路交通安全现状，为有关部门出台交通 安全措施提供有力依据。

关键词: 西藏道路交通；熵权-TOPSIS 法；交通事故；安全测评