There was also a bit of a struggle when NJT and MN tried to ban card-playing on the trains. A couple MN conductors went as far as to have several passengers arrested and taken off the train. (Ironically, MN was running commercials at the very same time point out that you could sleep, read, or play cards on the train.)
The problem was that while most card games on the train for nickel-and-dime games, some players, particularly on the Port Jervis trains, were playing pretty high stakes, with thousands of dollars on the table (or in this case lapboards). The railroad, reasonably, thought it was getting out of hand and it was just a matter of time until there was a robbery, or worse.
It has been a very long time--10 years, maybe--since I saw a card game on the train, at least on the Boonton Line. Are there still card games on other lines?
"But Dad. It's Smokey!"