I've had experiences where it was too crowded to move and other people were sitting on other people's lap for about 20 minutes. Saw some non-local people tell others that they better not push him. Your right it is like hell during that rush hour. Also, during the morning time I'm talking really early in the morning. A girl got coffee at starbucks and everybody was rushing in to get on the subway she got pinched on the side of one of the carts and the drink she was holding exploded in her face and got all over her clothes. That was a hell of a morning for her. I was standing close by to her, but I let everyone get on before me. I knew something was gonna happen to her and that coffee it was just out of place. 

I live on line 1 the worst and busiest I beleive,but all subways are bad line 2 also have had some close encounters with the doors  they are to keen to move on and do not have passenger safety at heart ring the bell shut the door im going  that is the impression one gets