基于交叉路口的动态OD反推模型与算法研究  

STUDY ON ESTIMATION OF DYNAMIC ORIGIN-DESTINATION FLOWS FOR INTERSECTIONS

作　　者：焦朋朋[1] 陆化普[1] 刘颖[1] 吴世江[1] 

机构地区：[1]清华大学交通研究所

出　　处：《土木工程学报》2004年第9期100-103,共4页China Civil Engineering Journal

基　　金：国家十五攻关课题 (No 2 0 0 2BA40 4A2 0B)

摘　　要：交叉路口各进出口道之间的实时交通量是信号控制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 ,以交叉路口各进出口道检测到的路段流量时间序列为基础 ,分析了交叉路口实时交通量的特点 ,提出了基于交叉路口的改进参数优化模型 ,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。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。Real-time traffic counts between entry and exit of intersections are important i nput data of traffic signal control system, and also difficult to get.This pape r reviewed the evolution process of dynamic OD flows estimation, made use of tim e-series of traffic counts detected at entries and exits of intersections, analy zed characteristics of real-time traffic counts of intersections, and put forwar d a revised parameter optimization model of dynamic OD flows estimation for inte rsections.The paper also designed a genetic algorithm to solve the problem, and discussed six key issues of the algorithm.Experimental results show that the m odel and algorithm are efficient and accurate, and can be applied in on-line sys tems.

关 键 词：动态OD矩阵 交叉路口 路段流量时间序列 遗传算法 

分 类 号：U491[交通运输工程—交通运输规划与管理]