The Market-Frankford Line map tags stations with an A, B, or both. What do the A and B mean?
The System Status page, if you click Market Frankford Line, says the 15th Street station is under construction and seems to say you can exit from the station but you cannot enter? <http://www.septa.org/realtime/status/system-status.shtml>
The Fare Brochure says a Medicare card gets you "free at all times" travel on the subway. How does it work? Do you have to shout for an attendant? <http://septa.org/fares/new/2013%20Fare%20Brochure.pdf>
To haul non-Medicare cases, the subway takes cash $2.25 or a token of $1.80. The choice seems absurd -- who wouldn't prefer $1.80? What is it about tokens that makes the $2.25 option necessary?