上海市高架道路宏观稳态交通流建模及应用

利用宏观交通流模型对高架道路的运行状况进行了评价。在模型的选择上包括三个基本模型:递推模型、起始—到达模型、起始—终点模型。利用递推模型分析了上海市中心城区高架道路交通流状态。并与实际运行情况基本吻合。可见模型从宏观层次上能充分反映高架交通流随时间和空间的变化及分布规律,从而分析、评价了高架道路各路段的交通运行状态,指出了高架道路的交通瓶颈所在。

Application & Model Building of Macroscopic Steady Traffic Flow of Urban Expressway in Shanghai

After the statement of the characte-ristics of macroscopic steady traffic flow briefly, three basic models are put forward, which include recursion model, start-arrival model and start- destination model. The article set up steady traffic flow model of urban expressway based on the principle of recursion model to simulate the situation of traffic flow. Then the article analyses the change and distribution characteristics of traffic flow of expressway and evaluates the operation situation of every road section on urban expressway.