Uber’s new transit feature is powered by Masabi, a London-based tech company that builds mobile ticketing software for public transportation. This is the first incarnation of Uber and Masabi’s partnership since the two companies first struck a deal last year to integrate the latter’s mobile ticketing platform into the former’s app. Uber riders in Denver have been able to see real-time bus and rail information when they open the app since January, courtesy of transit data firm Moovit.