It's a lot harder for a drunk train rider to kill someone than a drunk driver. You also seem to conflate any use of alcohol with abuse of alcohol, which is at the very least kind of odd. Sure, some people act like assholes when they're drunk. Some people, often the same people, also act like assholes when they're sober. I'm not sure it makes sense to identify the problem as drunkenness, instead of assholishness.