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arXiv 2103.04833physics.soc-phnlin.AO
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城市拥堵动态中空间转变的出现

Emergence of spatial transitions in urban congestion dynamics

Aniello Lampo, Javier Borge-Holthoefer, Sergio Gómez, Albert Solé-Ribalta

摘要:

交通动力学的定量研究是保证城市交通网络效率的关键。目前的工作调查的空间特性的拥堵,也就是说,我们的目标是描述城市地区的交通瓶颈发生。大量的实际道路网络的分析表明,在以前的作品中,拥堵点经历空间突变,即他们转移到远离城市中心的大城市地区纳入。这种影响背后的基本因素是中央和干线道路的纠缠,嵌入在分离的地理区域。在本文中,我们扩展了分析的条件产生的突然转变的拥塞位置。首先,我们研究更现实的情况下,动脉和中心道路,而不是躺在急剧分离的地区,目前的空间重叠。结果,这影响了瓶颈的位置,并引入了新的可能的拥堵区域。其次,我们特别注意的边缘分布所发挥的作用,证明它允许平滑的过渡配置文件,从而控制拥塞位移。最后,我们表明,上述现象也可以恢复作为一个结果的节点密度的不连续性,在一个域具有均匀的连接。研究结果为城市道路网络的设计和优化以及日常交通管理提供了有益的启示。

英文摘要:

The quantitative study of traffic dynamics is crucial to ensure the efficiency of urban transportation networks. The current work investigates the spatial properties of congestion, that is, we aim to characterize the city areas where traffic bottlenecks occur. The analysis of a large amount of real road networks in previous works showed that congestion points experience spatial abrupt transitions, namely they shift away from the city center as larger urban areas are incorporated. The fundamental ingredient behind this effect is the entanglement of central and arterial roads, embedded in separated geographical regions. In this paper we extend the analysis of the conditions yielding abrupt transitions of congestion location. First, we look into the more realistic situation in which arterial and central roads, rather than lying on sharply separated regions, present spatial overlap. It results that this affects the position of bottlenecks and introduces new possible congestion areas. Secondly, we pay particular attention to the role played by the edge distribution, proving that it allows to smooth the transitions profile, and so to control the congestion displacement. Finally, we show that the aforementioned phenomenology may be recovered also as a consequence of a discontinuity in the nodes density, in a domain with uniform connectivity. Our results provide useful insights for the design and optimization of urban road networks, and the management of the daily traffic.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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