基于元胞自动机的快速路交织区建模仿真  

Traffic Simulation of Expressway Transition Area Based on Cellular Automata

作　　者：狄宣[1] 张小宁[1] 张红军[1] 

机构地区：[1]同济大学,上海200092

出　　处：《交通与计算机》2008年第2期23-26,30,共5页Computer and Communications

基　　金：国家自然科学基金项目资助(批准号:70401016;70571058)

摘　　要：快速路匝道处的交通流因交织方向多而显得具有混乱、复杂和难于管理。匝道交织区的交通管理对于提高快速路通行能力、加强交通安全运行具有非常重要的意义。文中引入"冒险系数"来表达驾驶员的驾车习惯,并使用元胞自动机模型来仿真快速路交织区中交织车辆的跟车和换道行为。仿真得到交通流量、交织区长度等参数对交织路段交通所产生的效果和影响,并用宏观流速曲线验证了模型。Due to the complexity and management difficulty of traffic flow, traffic management in transition area of expressway is very meaningful to the improvement of expressway capacity and the enhancement of traffic safety. In this paper, a cellular automata model was used to simulate the car-following and lane-changing behaviors in expressway transition area. Then, the effect of different traffic volume and length of weaving section on the operation of expressway weaving section were analyzed. Finally, a simulation model was validated by macroscopic flow-speed curve.

关 键 词：元胞自动机(CA) 跟车模型 换道模型 仿真模型 

分 类 号：U491[交通运输工程—交通运输规划与管理]