The Norristown High Speed Line, officially SEPTA
Route 100, travels 13.5 miles between 69th Street Terminal and the
Norristown Transportation Center. The route has a rich
history, including operating at great speeds with Brill "Bullet
Cars" during a much earlier era. Some consider it among
America's last interurbans. Some consider it heavy rail. In any
case it's a unique piece of electric rail transit.
This photo is at 69th Street. Unlike the heavy rail Market-Frankford
Line and the suburban trolleys, which have loops at this terminal,
the Norristown Line glides to a stop along stub-end rails. A
careful look at the photo above shows a Market-Frankford subway train
rising along its loop to head back to center city and beyond.