Demand and Congestion in Multiplex Transportation Networks.

Demand and Congestion in Multiplex Transportation Networks.
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DOI:
10.1371/journal.pone.0161738
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发表时间:
2016
期刊:
影响因子:
3.7
通讯作者:
González MC
González MC
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Chodrow PS;Al-Awwad Z;Jiang S;González MC

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城市交通系统是多模式的社会技术系统,然而,虽然他们的多模式方面已经得到了广泛的关注,在最近的文献多重网络,其社会技术方面已在很大程度上被忽视。我们提出了第一个城市交通系统的研究,使用多路网络分析和验证的出发地-目的地的出行需求,与利雅得的规划地铁作为案例研究。我们开发的方法来分析额外的运输层对现有动态的影响,并表明需求结构起着关键的定量和定性作用。地铁对交通动态的影响存在基本的几何限制,并且大部分环境在地铁速度仅略高于计划速度时发生。我们开发了一个简单的模型,通知使用额外的,“馈线”层,以最大限度地减少全球拥堵。我们的技术在计算上是实用的,可以很容易地扩展到任意传输层与复杂的传输逻辑,并在开源软件中实现。
Urban transportation systems are multimodal, sociotechnical systems; however, while their multimodal aspect has received extensive attention in recent literature on multiplex networks, their sociotechnical aspect has been largely neglected. We present the first study of an urban transportation system using multiplex network analysis and validated Origin-Destination travel demand, with Riyadh’s planned metro as a case study. We develop methods for analyzing the impact of additional transportation layers on existing dynamics, and show that demand structure plays key quantitative and qualitative roles. There exist fundamental geometrical limits to the metro’s impact on traffic dynamics, and the bulk of environmental accrue at metro speeds only slightly faster than those planned. We develop a simple model for informing the use of additional, “feeder” layers to maximize reductions in global congestion. Our techniques are computationally practical, easily extensible to arbitrary transportation layers with complex transfer logic, and implementable in open-source software.
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