Millions continue to ride buses and trains. We surveyed them: of course they’re essential workers. They’re also mostly female, people of colour, and poorly paid. — During a single week in March, our app usage dropped 30%. By week two, it was down 70%. Then it bottomed out: for the past few weeks, our app Transit has been holding steady, with usage down 77% below normal. That’s 77% fewer people taking the bus, the train, bikeshare…