I travel on the train quite alot and just recently I was on the train which picked up all the passengers from Prestwick airport. At that point the train was crowded and this was 8 car train. I was lucky I got on earlier at Ayr or I would of had to stand for an hour. Also, Prestwick airport is stop 3 of about 15 so the train kept getting busier and busier. At some stations there was just no room for people to get on and off. There should be some sort of regulation of passengers to prevent this.