The SEPTA R6 is a route of the SEPTA Regional Rail (commuter rail) system. One end of the route terminates in the western suburbs in the Bala Cynwyd section of Lower Merion Township, while the other end terminates at Elm Street in Norristown, Pennsylvania. Since the early 1990s, the line has operated with limited weekday service between Suburban Station to Bala Cynwyd, with regular 7-day service between 30th Street Station and Norristown. Recently, SEPTA and the Berks Area Rapid Transit Authority (BARTA) has entered an agreement to build the Schuylkill Valley Metro, a 62-mile two-track electrified commuter rail line system that will use both sides of the R6 system. Once in operation, it is believed the R6 designation will be retired.