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Delay, stop and queue estimation for uniform and random traffic arrivals at fixed-time signalized intersections.

机译:固定时间信号交叉口的均匀和随机交通到达的延迟,停止和排队估计。

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摘要

With the introduction of different forms of adaptive and actuated signal control, there is a need for effective evaluation tools that can capture the intricacies of real-life applications. While the current state-of-the-art analytical procedures provide simple approaches for estimating delay, queue length and stops at signalized intersections, they are limited in scope. Alternatively, several microscopic simulation softwares are currently available for the evaluation of signalized intersections. The objective of this dissertation is fourfold. First, it evaluates the consistency, accuracy, limitations and scope of the alternative analytical models. Second, it evaluates the validity of micro simulation results that evolve as an outcome of the car-following relationships. The validity of these models is demonstrated for idealized hypothetical examples where analytical solutions can be derived. Third, the dissertation expands the scope of current analytical models for the evaluation of oversaturated signalized intersections. Finally, the dissertation demonstrates the implications of using analytical models for the evaluation of real-life network and traffic configurations.; This dissertation compared the delay estimates from numerous models for an undersaturated and oversaturated signalized intersection considering uniform and random arrivals in an attempt to systematically evaluate and demonstrate the assumptions and limitations of different delay estimation approaches. Specifically, the dissertation compared a theoretical vertical queuing analysis model, the queue-based models used in the 1994 and 2000 versions of the Highway Capacity Manual, the queue-based model in the 1995 Canadian Capacity Guide for Signalized Intersections, a theoretical horizontal queuing model derived from shock wave analysis, and the delay estimates produced by the INTEGRATION microscopic traffic simulation software. The results of the comparisons for uniform arrivals indicated that all delay models produced identical results under such traffic conditions, except for the estimates produced by the INTEGRATION software, which tended to estimate slightly higher delays than the other approaches. For the random arrivals, the results of the comparisons indicated that the delay estimates obtained by a micro-simulation model like INTEGRATION were consistent with the delay estimates computed by the analytical approaches.; In addition, this dissertation compared the number of stops and the maximum extent of queue estimates using analytical procedures and the INTEGRATION simulation model. (Abstract shortened by UMI.)
机译:随着各种形式的自适应和激励信号控制的引入,需要一种有效的评估工具,以捕捉现实生活中应用的复杂性。尽管当前最先进的分析程序提供了简单的方法来估计延迟,队列长度和在信号交叉口的停靠点,但它们的范围有限。可替代地,当前有几种微观仿真软件可用于评估信号交叉口。本论文的目标是四个方面。首先,它评估替代分析模型的一致性,准确性,局限性和范围。其次,它评估了微观模拟结果的有效性,这些结果是随着汽车追随关系而发展的。这些模型的有效性在可以导出分析解的理想假设示例中得到了证明。第三,本文扩展了当前分析模型用于评价过饱和信号交叉口的范围。最后,本文证明了使用分析模型评估现实网络和流量配置的意义。本文比较了考虑统一和随机到达的饱和和过饱和信号交叉口众多模型的时延估计,试图​​系统地评估和证明不同时延估计方法的假设和局限性。具体来说,本文比较了理论上的垂直排队分析模型,1994年和2000年版《公路通行能力手册》中使用的基于队列的模型,1995年《加拿大信号交叉口容量指南》中的基于队列的模型,理论上的水平排队模型。由冲击波分析得出,以及由INTEGRATION微观交通模拟软件产生的延迟估算。统一到达的比较结果表明,在这种交通条件下,所有延迟模型均产生相同的结果,但INTEGRATION软件产生的估计除外,该估计往往比其他方法估计稍高的延迟。对于随机到达,比较结果表明,由像INTEGRATION这样的微仿真模型获得的延迟估计与分析方法计算出的延迟估计一致。此外,本文还使用分析程序和集成仿真模型比较了停靠点的数量和队列估计的最大范围。 (摘要由UMI缩短。)

著录项

  • 作者

    Kang, Youn-Soo.;

  • 作者单位

    Virginia Polytechnic Institute and State University.;

  • 授予单位 Virginia Polytechnic Institute and State University.;
  • 学科 Engineering Civil.; Engineering System Science.
  • 学位 Ph.D.
  • 年度 2000
  • 页码 236 p.
  • 总页数 236
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 建筑科学;系统科学;
  • 关键词

  • 入库时间 2022-08-17 11:47:44

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