The protest began around 11:30 a.m. involving individuals in wheelchairs who are complaining about wheelchair accessibility to the subway system.
They held up the train because, they say, the transit agency's conductors aren't safety helping those in wheelchairs aboard trains.
The demonstrators say that violates SEPTA's protocol.
SEPTA's Richard Maloney says "We've been talking with them for a long time and we've been teaching them how to use the system and, if they have any complaints, to complain to us and they have not done that."
SEPTA was offering shuttle buses between 15th and 40th Streets for customers on the Market-Frankford Line.