摘要
在视城市交通为一动力系统的基础上,以该系统中具有基础性地位的交通需求与交通供给两要素为出发点,通过对城市交通状态存在域描述和引入城市道路网利用率概念,给出了城市交通状态的图形化表示;通过对交通供给与交通需求随时间变化历程曲线的分析,提出并讨论了交通供给、交通需求随时间变化的三种互动关系类型。这些内容将为城市交通管理决策部门根据城市在行车辆数量、车流状况分析预测城市交通状况提供途径。
By taking urban traffic as a dynamic system, two essential elements in this system, i.e., traffic feed and traffic requirement, are determined. With the description of urban traffic state and the intro duction of the road network utilization ratio, graphical expression of urban traffic state is proposed and dis cussed. Based on the analysis on the variations of traffic feed and traffic requirement with time, three correla tions between the two elements are proposed. Results of this study provide the city traffic management with de cision-making foundation for the prediction of traffic state with analysis on vehicle quantity and flow state.
出处
《中南公路工程》
北大核心
2004年第4期42-46,共5页
Central South Highway Engineering
关键词
交通供给
城市交通
交通需求
车流
城市道路网
车辆
行车
供求关系
决策部门
要素
transportation feed
transportation requirement
correlation analysis
equilibrium between traffic feed and traffic requirement
