AEM-7s were once very common at Penn Station, operated by both MARC
and Amtrak. Since the delivery of the new GP40WH-2s, MARC AEM-7s are
rarely, if ever, seen pulling the commuter trains. Amtrak still
continues to use them, with an occasional E60 making an
appearance. UPDATE: I spotted a MARC AEM-7 from I83 on Saturday, 27
July, sitting idle at the head of a commuter train. They appear to
be still in use, but are hard to find since only four are on the
MARC roster.
The renovation of Penn Station in the 1990s added a new parking
garage, which makes a trip from here much more convenient. The MTA
also has an extension to its Light Rail line between the Mount Royal Station and Penn Station that allows access to downtown Baltimore or north into Cockeysville and Hunt Valley.
Penn Station
Baltimore's Penn Station sit over the Pennsylvania Railroad's former
mainline through Maryland, now part of Amtrak's Northeast Corridor.
MARC and Amtrak share the platforms here, with daily service to
Baltimore Washington International Airport and Washington D.C.'s
Union Station. MARC trains are stored here at night and over
weekends, but it is rather difficult to view them without taking a
train. Only passengers are allowed down the steps from the waiting
room, and visibility from outside the station is limited by fences
lining the bridges and streets overhead. The trains are visible from
nearby I83, the Jones Falls Expressway, but there is no place to
stop along this highway. It would be best to snap photographs while
commuting between Baltimore and D.C.