Under the Reading the line was known as the New Hope Branch. The Reading electrified the portion between Glenside and Hatboro on July 26, 1931.[4] The North East Pennsylvania Railroad was one of twelve railroads merged into the Reading Company effective December 31, 1945.[5] Passenger service beyond Hatboro ended on June 7, 1952. The New Hope and Ivyland Railroad purchased the section of the branch between Ivyland and New Hope on June 20, 1966, with the intention of running steam excursion service.[6]
The Reading, with SEPTA's support, extended electrification from Hatboro to Warminster on July 29, 1974.[4] With the Reading's final bankruptcy in 1976, the New Hope and Ivyland acquired the section of the New Hope Branch between Ivyland and Warminster, while the Glenside–Warminster section was conveyed to Conrail.[7][8] Conrail conveyed the line to SEPTA in 1979.