Well, I worked the Penn-Central era both in passenger and freight service.
Some of that era was spent on the River Line between North Jersey and
Selkirk. You could not believe how bad things were, I have saved an old
B/O or two just to tweek my memory.
The PRR was in far worse shape than the NYC or the NH for that matter, it
takes a while for things to get as bad as they were then but the lack of
proper maintenance and care will accelerate the process.
I hope it never gets that bad but I am not so sure.
When you see slow orders where no work is taking place, watch out. Saw
much of that under Penn-Central for long stretches on the River Line, it
was hard to believe that a main freight line from the south to New England
could be allowed to get so bad, half of it was under a 10 MPH slow order
at one time.