[2][3] With the Reading's final bankruptcy in 1976 Conrail took over the operation of the trains and ownership of the branch.

A train crash occurred on July 1, 2006, in Abington Township injuring 38 passengers and 6 crew members.

[5] Beginning in 1984 the route was designated R2 Warminster as part of SEPTA's diametrical reorganization of its lines.

It noted that SEPTA considered the line a "long range transit opportunity corridor.

[8] Between FY 2013–FY 2019 yearly ridership on the Warminster Line ranged between 2.3 and 2.7 million before collapsing during the COVID-19 pandemic.