DC Transit and Greyhound Lines provided connecting bus service to Annapolis and Rockville, Maryland.

[3][4] Amtrak continued using Capital Beltway when it assumed control of Penn Central's passenger trains on May 1, 1971.

Capital Beltway proved to be inadequate as a station: it was not handicapped accessible and its waiting room, as originally built, had seats for just ten people and no restrooms, with some of the interior space occupied by a bus ticketing office.

[5] In August 1982, Conrail commuter trains (the future MARC Penn Line) began stopping at Capital Beltway; the nearby Lanham and Landover stations were closed.

[6] Amtrak and Conrail abandoned Capital Beltway on October 30, 1983, in favor of nearby New Carrollton, which had been a Washington Metro stop since 1978.