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A MIXED INTEGER LINEAR PROGRAMMING APPROACH FOR OBTAINING AN OPTIMAL SIGNAL TIMING PLAN IN GENERAL TRAFFIC NETWORKS.

机译:通用交通网络中获取最佳信号时序计划的混合整数线性规划方法。

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摘要

In recent years, the traffic congestion problem has increased to such an extent, that it alarms traffic engineers. Most often these problems occur in urban, and/or inter-urban networks. The most obvious solution of this problem, expanding the facilities by adding more lanes to the street system, is seldom feasible. Therefore, traffic engineers need to make optimum use of existing traffic networks.;A great deal of theory has been developed that could potentially aid the traffic engineer in obtaining solutions to some of these problems. Unfortunately, most traffic engineers are unfamiliar with operations research concepts; therefore, the research performed in this area has not been fully utilized. The research described herein provides computer-based optimization methodology within a decision support environment. Traffic engineers can apply this system without knowing the full theory or underlying concepts to be able to solve selected traffic control problems. The engineer's responsibility is to comprehend the explicit assumptions and supply the required data.;MAXBAND 86 is the end product of this research. MAXBAND 86 takes traffic network data, formulates the problem as a mixed integer linear program, solves the problem and prints the results in terms common to traffic engineers. The MAXBAND 86 software is coded in FORTRAN 77 using structured programming design. The program consists of over sixteen thousand lines of code and is composed of 265 subroutines. It has been extensively tested on several actual network problems. MAXBAND 86 will be of value to traffic engineers faced with developing signal control strategies for urban street networks. This research was sponsored by the Federal Highway Administration, Washington, D.C. under contract number DOT-FH61-84-C-00051.;The problem of traffic signal synchronization in a general traffic network is addressed herein. The traffic signal network problem is formulated as a mixed integer linear program. A methodology for the general use of this problem solving technique is developed and implemented for traffic networks. Prior to this research, there was no procedure for optimizing the progression bandwidth in a general traffic network.
机译:近年来,交通拥堵问题已增加到一定程度,使交通工程师感到震惊。这些问题最经常发生在城市和/或城市间网络中。解决此问题的最明显方法是,通过在街道系统上增加更多车道来扩展设施,这几乎是不可行的。因此,交通工程师需要充分利用现有的交通网络。;已经开发了许多理论,可以潜在地帮助交通工程师获得对这些问题中某些问题的解决方案。不幸的是,大多数交通工程师都不熟悉运筹学的概念。因此,在这一领域进行的研究尚未得到充分利用。本文所述的研究在决策支持环境中提供了基于计算机的优化方法。交通工程师可以应用此系统而无需了解完整的理论或基础概念来解决选定的交通控制问题。工程师的责任是理解明确的假设并提供所需的数据。MAXBAND 86是本研究的最终产品。 MAXBAND 86获取交通网络数据,将问题表述为混合整数线性程序,解决问题并以交通工程师常用的术语打印结果。 MAXBAND 86软件使用结构化编程设计在FORTRAN 77中进行编码。该程序包含一万六千多行代码,由265个子例程组成。它已经在几个实际的网络问题上进行了广泛的测试。 MAXBAND 86对于面临为城市街道网络开发信号控制策略的交通工程师将具有重要的价值。这项研究由华盛顿特区联邦公路管理局以合同号DOT-FH61-84-C-00051赞助;本文解决了一般交通网络中交通信号同步的问题。交通信号网络问题被表述为混合整数线性程序。为交通网络开发并实施了这种解决问题技术的通用方法。在进行这项研究之前,还没有用于优化一般交通网络中的渐进带宽的程序。

著录项

  • 作者

    CHAUDHARY, NADEEM AHMAD.;

  • 作者单位

    Texas A&M University.;

  • 授予单位 Texas A&M University.;
  • 学科 Industrial engineering.;Civil engineering.;Operations research.
  • 学位 Ph.D.
  • 年度 1987
  • 页码 107 p.
  • 总页数 107
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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