为了全面有效地评价道路交通安全状态,采用跨部门交通安全信息和熵权的相关理论对其进行研究。通过深入分析跨部门信息以及交通管理和路网结构层次划分的特点,从微观和宏观两个层面构建区域交通安全状态评价指标体系。采用密度算术加权平均算子,结合基于信息熵理论的熵权确定方法,提出基于熵权的密度算术加权平均算子。实例表明:该方法能够进行区域(路段)之间或同一区域(路段)不同时期交通安全状态的评价和比较,为道路交通安全管理部门提供决策支持依据。 In order to comprehensively and effectively evaluate the status of road traffic safety, it uses cross-sectoral traffic safety information and entropy theory to study it. Through in-depth analysis of cross-sectoral information as well as the characteristics of traffic management and the hierarchical structure of road network structure, the regional traffic safety status evaluation index system is constructed from the micro and macro levels. Based on the density arithmetic weighted average operator, combined with the method of entropy determination based on information entropy theory, a density arithmetic weighted average operator based on entropy weight is proposed. The example shows that this method can evaluate and compare traffic safety status between regions (sections) or in different regions (sections), and provide decision support basis for road traffic safety management department.