I took photos from the PATH Harrison platform on Thanksgiving eve from about 1970 to 1990, and occasionally during the summers. Pennsy G's, Reading Budd cars, CNJ GP35s and GP40s. monitor tops, GN coaches, NJDOT Southern Railway E-8s, you name it, it rolled by.
PATH K-cars, two door and three door cars, real seats and subway style. In 20 years, I'll bet 20 cops and conductors rolled by, said hello. Nice people, always interested, only challenged for ID once or twice.
I think the enforcement of PATH's photo rule is stupid, but I'm not gonna tell that to somebody who lost a buddy or a brother. If it means enough for them to chase me off, I'll go...