The R-Line is a zero-fare circulator bus service that traverses a three-mile loop in the shape of an inverted U through downtown Raleigh, North Carolina. The three green-painted, hybrid-electric buses stop every 15 minutes at stops marked with an R-Line sign. Service runs from 7 AM to 11 PM Monday through Wednesday, 7 AM to 2:15 AM Thursday through Saturday, and 1 PM to 8 PM Sunday.