关键词: 交通工程, 城市交通, 交通拥堵, 层次分析法, 模糊综合评判

Abstract: According to the characteristics of spatial-distribution of traffic congestion,city road-network traffic congestion is divided into road section congestion and cross congestion.Consulting the division standard of city road and cross service level,city road-network traffic congestion is classified into five grades:congestion,crowd,general crowd,general unimpeded and unimpeded.The indexes to evaluate city road network traffic congestion are selected.Through the Analytic Hierarchy Process,two hierarchy evaluation index systems and corresponding H-Fuzzy comprehensive evaluation model are established.Finally,the H-Fuzzy evaluation method is used to evaluate the traffic states of one typical city road network.The research results provide an effective quantitative analysis to evaluate city traffic congestion.

Key words: traffic engineering, city traffic, traffic congestion, AHP (Analytic Hierarchy Process), fuzzy synthetic evaluation