In February 2021, the city government of Philadelphia announced the Philadelphia Transit Plan, which outlines the city's proposals for its public transportation system through 2045. For Regional Rail, the plan included increased service frequency, a fare system overhaul, and the creation of many metro-like Regional Rail lines within the Philadelphia city limits and close suburbs. Regional Rail would be split into the Silver Line, frequent Regional Rail (metro-style lines), and Regional Express Service (lines similar to the current Regional Rail, which would make fewer stops closer to Philadelphia). This plan would require upgraded tracks and stations, new vehicles, and infrastructure replacement and upgrades. Similar to other major infrastructure upgrades to existing commuter networks such as GO Transit Regional Express Rail in Toronto or the Electrification of Caltrain in San Francisco. The plan also proposed extensions of Regional Rail services to Phoenixville, Quakertown, and West Chester.