Three versions of signals are all saying nothing but Stop to traffic
exiting Bay View yard trackage. In fact, with just two lamps the leftmost
signal always displays Stop. Stop can be modified into something less
restrictive by lights below it.
Along the NE Corridor in Maryland, pole signals like these are greatly
outnumbered by overhead signal bridges. The leftmost signal is a
PRR original. The small signal in the middle employs the Pennsy dwarf
style on a pedestal. The rightmost signal, with a characteristic array
of bright bolts, is a newer model manufactured by Safetran.
Todd's page about PRR signals