University of Southampton, Southampton, United Kingdom.
Imperial College London, London, United Kingdom.
PLoS One. 2021 Dec 2;16(12):e0260969. doi: 10.1371/journal.pone.0260969. eCollection 2021.
The COVID-19 pandemic has been influencing travel behaviour in many urban areas around the world since the beginning of 2020. As a consequence, bike-sharing schemes have been affected-partly due to the change in travel demand and behaviour as well as a shift from public transit. This study estimates the varying effect of the COVID-19 pandemic on the London bike-sharing system (Santander Cycles) over the period March-December 2020. We employed a Bayesian second-order random walk time-series model to account for temporal correlation in the data. We compared the observed number of cycle hires and hire time with their respective counterfactuals (what would have been if the pandemic had not happened) to estimate the magnitude of the change caused by the pandemic. The results indicated that following a reduction in cycle hires in March and April 2020, the demand rebounded from May 2020, remaining in the expected range of what would have been if the pandemic had not occurred. This could indicate the resiliency of Santander Cycles. With respect to hire time, an important increase occurred in April, May, and June 2020, indicating that bikes were hired for longer trips, perhaps partly due to a shift from public transit.
自 2020 年初以来,COVID-19 大流行一直在影响全球许多城市的出行行为。因此,共享单车计划受到了影响-部分原因是旅行需求和行为的变化以及公共交通的转变。本研究估计了 COVID-19 大流行对 2020 年 3 月至 12 月期间伦敦共享单车系统(桑坦德自行车)的不同影响。我们采用了贝叶斯二阶随机游走时间序列模型来解释数据中的时间相关性。我们将观察到的自行车租赁数量和租赁时间与其各自的反事实(如果没有大流行会发生什么)进行了比较,以估计大流行造成的变化幅度。结果表明,在 2020 年 3 月和 4 月自行车租赁量减少之后,需求从 2020 年 5 月开始反弹,仍处于如果没有大流行本应处于的预期范围内。这可能表明桑坦德自行车具有弹性。关于租赁时间,2020 年 4 月、5 月和 6 月出现了重要的增长,表明自行车租赁用于更长的旅行,部分原因可能是公共交通的转变。