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TRAFFIC PARADOX UNDER DIFFERENT EQUILIBRIUM CONDITIONS CONSIDERING ELASTIC DEMAND

机译：考虑弹性需求的不同平衡条件下的交通悖论

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摘要

Traffic paradox is an important phenomenon which needs attention in transportation network design and traffic management. Previous studies on traffic paradox always examined user equilibrium (UE) or stochastic user equilibrium (SUE) conditions with a fixed traffic demand (FD) and set the travel costs of links as constants under the SUE condition. However, traffic demand is elastic, especially when there are new links added to the network that may induce new traffic demand, and the travel costs of links actually depend on the traffic flows on them. This paper comprehensively investigates the traffic paradox under different equilibrium conditions including the user equilibrium and the stochastic user equilibrium with a fixed and elastic traffic demand. Origin-destination (OD) mean unit travel cost (MUTC) has been chosen as the main index to characterize whether the traffic paradox occurs. The impacts of travelers' perception errors and travel cost sensitivity on the occurrence of the traffic paradox are also analyzed. The conclusions show that the occurrence of the traffic paradox depends on the traffic demand and equilibrium conditions; higher perception errors of travelers may lead to a better network performance, and a higher travel cost sensitivity will create a reversed traffic paradox. Finally, several appropriate traffic management measures are proposed to avoid the traffic paradox and improve the network performance.
机译：交通悖论是交通网络设计和交通管理中需要注意的重要现象。先前关于交通悖论的研究总是检查具有固定交通需求（FD）的用户平衡（UE）或随机用户平衡（SUE）条件，并在SUE条件下将链接的旅行成本设置为常数。但是，流量需求是弹性的，尤其是当网络中增加了可能引起新流量需求的新链路，并且链路的旅行成本实际上取决于它们上的流量时。本文综合研究了在交通需求固定且具有弹性的情况下，在不同均衡条件下的交通悖论，包括用户均衡和随机用户均衡。已选择起点-目的地（OD）平均单位旅行成本（MUTC）作为表征交通是否发生悖论的主要指标。还分析了旅行者感知错误和旅行成本敏感性对交通悖论发生的影响。结论表明，交通悖论的发生取决于交通需求和均衡条件。较高的旅行者感知错误可能会导致更好的网络性能，并且较高的旅行成本敏感性将产生反向的交通悖论。最后，提出了几种适当的流量管理措施，以避免流量悖论并提高网络性能。

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  • 来源
    《Promet-traffic & transportation》 |2019年第1期|1-9|共9页
  • 作者

    QIANG TU; LIN CHENG; DAWEI LI; JIE MA; CHAO SUN;

  • 作者单位

    School of Transportation, Southeast University Si Pai Lou #2, Nanjing 210096, China;

    School of Transportation, Southeast University Si Pai Lou #2, Nanjing 210096, China;

    School of Transportation, Southeast University Si Pai Lou #2, Nanjing 210096, China,Jiangsu Key Laboratory of Urban ITS, Southeast University Si Pai Lou #2, Nanjing 210096, China,Collaborative Innovation Center of Modern Urban Traffic, Southeast University Si Pai Lou #2, Nanjing 210096, China;

    School of Transportation, Southeast University Si Pai Lou #2, Nanjing 210096, China;

    School of Automotive and Traffic Engineering Jiangsu University Xuefu Road #301, Zhengjiang 212013, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    traffic paradox; user equilibrium; stochastic user equilibrium; fixed demand; elastic demand; method of successive average;

    机译：交通悖论用户平衡随机用户均衡;固定需求;弹性需求;连续平均法;

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