Resilience assessment of an integrated bus-rail network considering dynamic congestion propagation process under traffic congestion events

With the rapid pace of urbanization and the rising car ownership, traffic congestion events (TCEs) are becoming more prevalent, which have significantly affected the safety and reliability of urban public transport systems. Proper assessment of the resilience of integrated bus-rail networks to such disruptions is therefore of practical significance. However, the existing studies mainly focus on single transportation mode with limited attention to integrated bus-rail networks under TCEs. Moreover, the influence of the dynamic congestion propagation process on the network resilience is often ignored. To address these gaps, this study proposes a model to assess the resilience of an integrated bus-rail network under TCEs by considering the impact of the dynamic congestion propagation process. Experimental results imply that an integrated bus-rail two-layer network is more resilient to TCEs than the single layered bus network in Chengdu, and the influence of the dynamic congestion propagation process is critical in the resilience assessment.