The affect of ride sharing businesses on bus ridership has been identified as a concern for SEPTA, which had 18 million fewer bus trips in 2017 than the year before. That decline is in part driving an effort to remake the city's bus service with more frequent, faster service. Schaller suggested in his report exactly the types of changes SEPTA envisions. His report offered policy prescriptions, but he also said it was one of the few studies conducted with the most current data available. The newness of ride sharing, an industry that didn't exist a decade ago, coupled with Uber and Lyft's reluctance to share data on their operations, has made it difficult to compile accurate information about exactly how they're affecting Americans' travel habits.