高速路段动态OD反推模型与算法研究

各进出口匝道间的实时交通量是高速公路管理系统重要的输入数据,也是难以获得的数据。本文回顾了动态OD反推理论的发展历程,提出了动态路径走行时间的完善和简化计算方法,在此基础上建立了基于高速路段的动态OD反推模型,设计了遗传算法对问题进行求解,并讨论了算法中的六个关键问题,提供了一种获得高速公路进出口间动态OD交通量的有效方法。实例研究表明,模型和算法具有较高的效率和准确性,能够应用于在线系统。

Study on Estimation of Dynamic Origin-Destination Flows in Expressway Corridors

Dynamic OD flow between entry and exit are important input data of expressway management system,and are difficult to get.This paper reviewed the evolution of dynamic OD flow estimation,put forward integrated and simplified calculation methods of dynamic route travel time,and set up a model of dynamic OD flow estimation for expressway section.The paper also designed a genetic algorithm to solve the problem,discussed six key issues of the algorithm,and provided an effective method to obtain the dynamic OD flow between entry and exit of expressway section.Experimental results show that the model and algorithm are efficient and accurate,and can be applied in on-line systems.