In London, Piccadilly Circus station is nearly empty on a weekday morning, while in Delhi, the Metro ferries fewer than half of the riders it used to. In Rio, bus drivers are on strike, and in New York City, subway traffic is at just a third of normal volume.
Read MorePublic transit agencies in the U.S. are struggling with lower ridership and revenues during the pandemic. NPR's Ailsa Chang talks with transit experts about whether subway and bus systems can survive.
Read MoreWhile trying to get to work over the past few months, Brittany Williams, a Seattle home care worker, has often been passed by two or three buses before one stops to let her board.
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