General Transit Feed Specification (GTFS) A set of eight flat files. The collection of files is used to provide timetable information.Individually, each file provides:Agency - contains agency name and website link.Calendar - contains to/from dates for the current schedule. Calendar Dates - Lists dates when MDT routes operate in the holiday schedule. Routes - Lists route names. Shapes - Contains information for route races. Stop Times - Contains a list of stops by route, by trip, with their individual stop times. Stops - Lists stops with their individual latitude and longitude. Trips - Lists all trips by route with the destination sign for each trip.