Main Line from Fern Rock Transportation Center to Jenkintown–Wyncote station in Jenkintown would have Frequent Regional Rail alongside Regional Express Services. Phase 3: Full implementation Phase 3 would include the implementation of the final Frequent Regional Rail lines, additional infrastructure, vehicle, and station upgrades. As part of phase 3, the Chestnut Hill West, Fox Chase, and Warminster lines would be completely replaced with Frequent Regional Rail, while the Lansdale/Doylestown, Media/Wawa, Paoli/Thorndale, and West Trenton lines would have Frequent Regional Rail run alongside Regional Express Services to Lansdale, Elwyn, Villanova, and Somerton respectively. The city of Philadelphia and SEPTA expect this plan to take decades and billions of dollars to complete. See also Commuter rail in North America List of Pennsylvania railroads List of suburban and commuter rail systems List of North American commuter rail operators List of United States commuter rail systems by ridership Notes References Further reading External links NYCsubway.org – SEPTA Regional Rail Lines Pennsylvania Transit Expansion Coalition (PA-TEC) Delaware Valley Association of Rail Passengers (DVARP) SEPTA Stats - Real-time Stats on Regional Rail Railway companies established in 1983 Standard gauge railways in the United States American companies established in 1983