Junction History SEPTA was created to prevent passenger railroads and other mass transit services from disappearing or shrinking in the region. Passenger rail service was previously provided by for-profit companies, but by the 1960s the profitability had eroded, not least because huge growth of automobile use over the previous 30 years had reduced ridership. SEPTA's creation provided government subsidies to such operations and thus kept them from closing down. For the railroads, at first it was a matter of paying the existing railroad companies to continue passenger service. In 1966 SEPTA had contracts with the PRR and Reading to continue commuter rail services in the Philadelphia region. The Pennsylvania Railroad and the Reading Company The PRR and Reading operated both passenger and freight trains along their tracks in the Philadelphia region. Starting in 1915, both companies electrified their busiest lines to improve the efficiency of their passenger service. They used an overhead catenary trolley wire energized at 11,000 volts single-phase alternating current at 25 Hertz (Hz). The PRR electrified the Paoli line in 1915, the Chestnut Hill West line in 1918, and the Media/West Chester and Wilmington lines in 1928. Both railroads continued electrifying lines into the 1930s, replacing trains pulled by steam locomotives with electric multiple unit cars and locomotives. PRR electrification reached Trenton and Norristown in 1930. Reading began electrified operation in 1931 to West Trenton, Hatboro (extended to Warminster in 1974) and Doylestown; and in 1933 to Chestnut Hill East and Norristown. The notable exception was the line to Newtown, the Reading's only suburban route not electrified. While the PRR expanded electrification throughout the northeast (ultimately stretching from Washington, D.C. to New York City), the Reading never expanded electric lines beyond the Philadelphia commuter district. By the late 1950s, commuter service had become a drag on profitability for the PRR and Reading, like most railroads of the era. Commuter service requires large amounts of equipment, large numbers of employees to operate equipment and station sites, and large amounts of maintenance on track that see extremely heavy usage for only six hours a day, five days a week. Meanwhile, the rise in automobile ownership and the building of the Interstate Highway System chipped away at the steady patronage as population in the suburbs grew. When the Philadelphia suburbs were small towns, people lived close enough to a train station to walk to and from the trains. When the