真实流量拥塞的无标度弹性
Scale-free Resilience of Real Traffic Jams
摘要：
弹性的概念可以在自然和工程系统中实现，代表系统从各种干扰中适应和恢复的能力。尽管弹性是理解和管理交通系统风险和崩溃所需的关键属性，但对于城市交通的弹性以及其在扰动下的统计属性仍然缺乏公认的和有用的定义。本文基于实际交通中拥堵的时空聚类定义了城市交通弹性，并发现弹性在二维城市路网和一维高速公路中服从无标度分布，其指数不同，但在不同日期和不同城市的指数相似.交通弹性也揭示了有一个新的缩放关系的簇大小的时空堵塞和恢复时间，独立的微观细节。我们的普遍的交通弹性的研究结果可以提供更好地理解和设计这些复杂的工程系统的内部和外部干扰下的指示。
英文摘要：
The concept of resilience can be realized in natural and engineering systems, representing the ability of system to adapt and recover from various disturbances. Although resilience is a critical property needed for understanding and managing the risks and collapses of transportation system, an accepted and useful definition of resilience for urban traffic as well as its statistical property under perturbations is still missing. Here we define city traffic resilience based on the spatio-temporal clusters of congestion in real traffic, and find that the resilience follows a scale free distribution in two-dimensional city road networks and one-dimensional highways, with different exponents, but similar exponents in different days and different cities. The traffic resilience is also revealed to have a novel scaling relation between the cluster size of the spatio-temporal jam and its recovery duration, independent of microscopic details. Our findings of universal traffic resilience can provide indication towards better understanding and designing these complex engineering systems under internal and external disturbances.
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。
