Pete S:
"On his own volition"? Aided by how many/much recreational chemicals?"
Kamaji:
"That, or maybe just after something he inadvertently dropped down the chute by mistake, like his cellphone."
I was pulling into Stamford some years' back with train 137, when a guy jumped from the platform onto the tracks right in front of me (about 40-50 feet ahead).
I put the train into emergency and somebody helped up to jump up to the platform, just as the engine (still moving a little) was about to make contact with him.
He had dropped his cell phone onto the tracks, and leapt down to get it! With the train pulling in right on top of him.
We called for the Metro-North police who came right down, but the guy had already run off...