基于转换OD的路径选择模型研究

Route selection models based on altering OD

针对城市整体路网中交通流分布的差异 ,提出了分配路网和模拟路网的分析方法 ,分配路网采用瞬时动态最优分配 ,模拟路网采用实际动态最优分配 ,并对二者的应用条件和关系进行了分析 .考虑到其在ATMS系统中的应用 ,模型分析了空间OD转换问题 ,并将决策点的路径调整方法加入目标函数的选择中 ,以评价弹性出行策略和建立路线诱导的实际方法 .对一小型路网进行了分配实验 。

The condition and physical sense of actual dynamic user optimal are explained by analyzing a simple road network route selection. In order to satisly the practical application requirement, assignment network and simulation network are classified with varying flow loading taken into account. Instantaneous dynamic user optimal model should be applied to assingnmant network while actual dynamic user optimal model is applied to simulation network. The feasibility of couple model is studied as well. Considering the application in ATMS, the model is mainly used to analyze the altering OD problem. The route adapting method is added into the object function selection to appraise the flexible trip strategy and set up a real means for route inducement. The result of an assignment experiment done with a small network is satisfactory.