A resilient transport network, which is significant for urban sustainability and security, is characterized by its ability to recover from disruptions subject to natural and man-made disasters. Bike sharing could act as a viable alternative in the case of public transit disruptions given its flexibility and various social, environmental, and economic benefits. This study aims to estimate quantitatively the potential of bike sharing to promote transport resilience, by using autoregressive negative binomial time series model to investigate the effects of public transit closures on bike sharing demand in Washington, D.C. area during 2015–2017. We find that (1) bike sharing can act as a supplementary mode to enhance urban transport resilience in the case of complete transit closure; (2) the proximity of bike sharing docks to metro stations has a powerful effect on propensity to use a bike sharing program; and (3) extreme weather is one of major barriers to bicycling. Planners can enhance resilience of urban transport networks by fully considering the capacity and usage of bike sharing docks, as well as the coherence of metro stations and bike sharing docks, in distributing and rebalancing activities.

弹性的运输网络对于城市的可持续发展和安全至关重要，其特点是能够从遭受自然和人为灾难的干扰中恢复过来。鉴于其灵活性以及各种社会，环境和经济效益，在公共交通中断的情况下，共享自行车可以作为可行的替代方案。这项研究旨在通过使用自回归负二项式时间序列模型来调查公共交通封闭对华盛顿特区2015-2017年间自行车共享需求的影响，从而定量评估自行车共享促进运输弹性的潜力。我们发现（1）在完全关闭公交系统的情况下，共享单车可以作为增强城市交通弹性的补充模式；（2）共享单车停靠站靠近地铁站会对使用共享单车的倾向产生强大影响；（3）极端天气是骑车的主要障碍之一。规划者可以在分配和平衡活动时充分考虑自行车共享码头的容量和使用，以及地铁站和自行车共享码头的协调性，从而增强城市交通网络的弹性。