It seems like the more straight forward version of that policy is 'no drugs on the train'. Allowing selective enforcement is a sure path to unintended consequences.
Nah the consequences are more riders. That's a great consequence.
> no drugs on the train
Nonsense. I'd rather have people carry their illegal drugs on the train and take them at home. The issue is people experiencing the effects of the drug on the train and often times making it unsafe for women, children, and men too (it doesn't really matter what your sex is when the drugged out man vomits on you). I honestly don't care if you carry your illegal drugs everywhere, as long as you make sure the effects of said drugs are dealt with privately. I have major issues with people making the consequences of their drug use other people's problem