Both the City of Philadelphia and SEPTA have studied extending the Broad Street Line along Roosevelt Boulevard, in order to serve a growing population in the northeast section of the city. The city government's archives contain a survey report, prepared in 1948, discussing a need for an extension of the Broad Street line from Erie Avenue to the vicinity of Pennypack Circle (see Roosevelt Boulevard). Subway car destination signage even included station and terminus names for major streets along Roosevelt Boulevard such as Rhawn Street, in the newer "South Broad" cars. An expansion into another part of the City could better use the capacity of the four-track trunk line.