All of the subway cars have stickers up on the wall near the doors, often several layers of them. Some have these old peeling, faded ones, with incredibly crap typesetting and primitive line drawings, with as few words as possible, indicating, for example that one should not bring gas cans aboard, as the fumes might bother people, or if you see a bomb (and amusing, two-sticks of dyamite, curly wire and alarm clock affair) that you should Definitely Not Touch It.
These are the ones from 10 or 12 years ago.
The new ones have a hip, Gen-X looking guy doing a punk-rock-yell-face, as photoshopped-into-darts cell-phones zero in on his spiky ‘do. These ones are telling you to turn down your cellphone ringer.
A decade is a long long time here.