Empirical analysis of congestion spreading in Seoul traffic network

Jung Hoon Jung, Young Ho Eom

Research output: Contribution to journalArticlepeer-review


Understanding how local traffic congestion spreads in urban traffic networks is fundamental to solving congestion problems in cities. In this work, by analyzing the high-resolution data of traffic velocity in Seoul, we empirically investigate the spreading patterns and cluster formation of traffic congestion in a real-world urban traffic network. To do this, we propose a congestion identification method suitable for various types of interacting traffic flows in urban traffic networks. Our method reveals that congestion spreading in Seoul may be characterized by a treelike structure during the morning rush hour but a more persistent loop structure during the evening rush hour. Our findings suggest that diffusion and stacking processes of local congestion play a major role in the formation of urban traffic congestion.

Original languageEnglish
Article number054312
JournalPhysical Review E
Issue number5
StatePublished - Nov 2023


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