Scale-free resilience of real traffic jams
| Autor: | H. Eugene Stanley, Limiao Zhang, Shlomo Havlin, Hai-Jun Huang, Daqing Li, Guanwen Zeng |
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| Rok vydání: | 2019 |
| Předmět: |
Physics - Physics and Society
Property (philosophy) Relation (database) Computer science Complex system FOS: Physical sciences Physics and Society (physics.soc-ph) 01 natural sciences 010305 fluids & plasmas 11. Sustainability 0103 physical sciences scaling laws traffic congestion Duration (project management) 010306 general physics Resilience (network) complex systems resilience spatiotemporal Multidisciplinary ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS Nonlinear Sciences - Adaptation and Self-Organizing Systems Applied Physical Sciences Risk analysis (engineering) Traffic congestion Physical Sciences Cluster size Scale (map) Adaptation and Self-Organizing Systems (nlin.AO) |
| Zdroj: | Proceedings of the National Academy of Sciences of the United States of America |
| ISSN: | 1091-6490 |
| Popis: | 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. Comment: 6 pages, 4 figures |
| Databáze: | OpenAIRE |
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