为克服Logit类模型的局限性,以出行链为分析单元,构建了快速城市化进程中居民出行方式选择的结构方程模型.首先,依据已有研究基础及城市化进程中居民出行特征,确定影响居民出行方式选择的3类因素,建立影响因素与出行方式之间的关系结构;在此基础上,构建结构方程模型,利用北京市居民出行调查数据对模型进行辨识与修正,最终得到了个人与家庭属性、土地利用、出行链等各类因素对出行方式的影响方向与程度.研究结果对优化居民出行方式结构、改善城市交通拥堵具有指导意义.
To overcome the limitation of Logit model, this paper developed a structural equation model for travel mode choice in the process of rapid urbanization based on the analysis unit of 'trip chain'. Firstly, three kinds of influence factor were determined according to the traveler's characteristics in rapid urbanization, and some hypotheses were advanced to describe the relationship between influence factors and travel mode choice. Then, the structural equation model was constructed. Using the travel survey data of Beijing, the model was computed and modified. The model computing result shows the quantitative relationships among traveler characteristics, land use, trip chain and travel mode choice. These findings have important implications for travel mode optimization and for the ease of traffic con- gestion.