 PTC was established on January 1, 1940, by the merger of the PRT and several smaller, then-independent transit companies operating in and near the city.It operated a citywide system of bus, trolley, and trackless trolley routes, the Market–Frankford Line (subway-elevated rail), the Broad Street Line (subway), and the Delaware River Bridge Line (subway-elevated rail to City Hall, Camden, New Jersey, and now part of the PATCO Speedline) which became SEPTA's City Transit Division.PTC operated the rapid transit lines in urban Philadelphia – principally the Market–Frankford Line and Broad Street Line – leasing their fixed infrastructure from the City of Philadelphia.