Impacts of COVID-19 on urban rail transit ridership using the Synthetic Control Method
Public transit use in the United States in the era of COVID-19: transit riders' travel behavior in the COVID-19 impact and recovery period
Spatiotemporal variation of the worldwide air transportation network induced by COVID-19 pandemic in 2020
Understanding gender difference in perceptions toward transit services across space and time: a social media mining approach
Will modal shift occur from subway to other modes of transportation in the post-corona world in developing countries?