The Chestnut Hill East, Fox Chase, Lansdale - Doylestown, Manayunk - Norristown, Trenton, and Wilmington - Newark lines are all operating on new schedules.
Starting Monday, service will return to Churchman's Crossing and Newark stations.
Many of the adjustments are meant to accommodate changes in ridership and ongoing transit improvement projects including next month's closures on I-95 for a 2-year reconstruction project.
CLICK HERE to learn more about the new schedules.