【作者】 蒲云； 蒲素；

【Author】 Pu Yun Dept. of Transp. eng., Southwest Jiaotong University, Chengdu 610031 Pu Su (E Mei Fen Xiao of Southwest Jiaotong University)

【机构】 西南交通大学运输工程系； 西南交通大学峨眉分校；

【摘要】 随着智能交通系统(ITS)的迅速推进,动态交通分配及其相关技术越来越受到重视．目前,已成为智能交通诱导系统、集中交通控制系统、事故管理系统等方面的关键基础技术之一,并已成为国际交通领域的热点研究课题．探索适合于大规模交通网络的动态分配模型及算法,一直是国际交通领域致力于研究的重要课题．1996年,Ran 等人提出了基于路段的理想动态用户最优路径选择的变分不等式模型．该文指出,该类模型克服了传统的基于路径的变分不等式模型的缺陷,能够用于描述大规模交通网络的动态特性．本文,我们从多方面分析了该类模型若干不适应性,并论证了该类模型并没有真正解决大规模化的难题．首先,我们分析了理想动态用户最优(DUO)选择条件所存在的问题;其次,分析了流量传播约束条件中的错误与不适应性;最后,分析了变分不等式模型在大规模交通网络应用中的缺陷．更多还原

【Abstract】 The rapid evolution of ITS technologies presents more and more specific requirements for dynamic traffic assignment. Dynamic traffic assignment is the key technologies of the intelligent traffic guidance systems . integrated traffic control systems , incident management systems and others and is becoming more popular topics worldwide. Finding dynamic traffic assignment model and algorithms for large-scale traffic networks has beeing the important topic worldwide. In 1996, Ran B et. present link-based ideal dynamic route choice model and shown that the model is appropriate for large-scale transportation networks. In this paper, we analyse the charateristics of the model from many and shown that the model is not appropriate for large-scale transportation networks. First, we analyse some questions of the ideal dynamic user-optimal route choice conditions. Then, the false of the flow propagation constraints conditions are analyied. Finally, some no appropriates of the variational ineqality model are analyied.更多还原