基于元胞自动机的中尺度交通模拟——以徐州市为例

Middle-Sized Dimension Traffic Flow Simulation Based on CA——Taking Xuzhou City for Instance

元胞自动机应用于微观交通系统分析已经相对成熟,但将元胞自动机与城市整体范围内交通系统结合进行分析还少有研究。从中尺度上利用元胞自动机思想在城市整体范围内对交通流模拟进行探讨,从而希望为城市交通流的模拟分析提供一个新的研究思路。该研究通过分析对交通量产生影响的土地单元利用属性提出了车辆生成灭失模型,并列举阐述了模型的相关属性。然后建立了车辆引力度模型确定车辆的行驶路线,以及详细提出和建立了车辆行驶模型等。最后利用基于以上模型编制的程序系统模拟徐州市主要道路交通流状况,在模拟城市交通流的同时对模型系统模拟的真实性进行了分析。

CA model adopted in traffic flow simulating research has rather mature,but in the middle-sized dimension traffic researching area is rarely found.Anticipate to put forward some useful ways in middle-sized dimensional traffic flow simulation.It established a traffic vehicle creating and eliminating model by land-use characters first,then established a traffic gravitation model and a vehicle movement model utilizing CA theory.At last,the computer software was programmed based on above models to simulate the traffic flow of Xuzhou city.Further more,this computer simulating system was analyzed.