Signage will display both the old and new designations for several months to help ease riders into the transition.

SEPTA says six of its buses will change from lettered routes to numeric designations. SEPTA's metro lines will also adopt a new system.

PHILADELPHIA — SEPTA is supplementing its regular Broad ... and there is a free transfer from the Market-Frankford Line [L] and City Trolley [T] routes at 15th Street/City Hall.