A SEPTA "American Cities Sprinter" leads an eastbound commuter push-pull through Bristol Township, PA, in a pan shot captured at 1/80th.

A set of SEPTA Silverliner's prepare to depart as a southbound express rolls in from the north, led by SPAX No. 912 with a set of borrowed MARC cars in tow.

The Over-Under: A NJ Transit River Line train passes over the Northeast Corridor and SEPTA Trenton Line Train 9728 during the Friday morning rush. SEPTA does not typically run push-pull s... (more)