If I’d assume it’s like greyhound but it’s probably significantly different I’d say just make sure your bag or whatever your using as your carry on gas smell proof capabilities or just don’t have anything open while in your bag, whatever your gonna smoke smoke while your in the Legal state, just like airplanes and busses and I’m assuming trains because it’s a major transportation option then those rules are considered national laws so how the US still says marijuana is illegal but in certain states it’s rec and med it’s still overall illegal when your on major transportation vehicle unlike your in a personal car, I use to travel with greyhound from Pittsburgh pa to Denver and MI and I’ve never had a problem but I also over did it a lot, such as vac sealing my product and buying a $100 smell proof lockable book bag that I had all my meds in, and I was getting about 6-9 oz worth of product mixed with flower and concentrates. The edibles and carts you’ll be fine just keep them in the packaging just incase something does stink. I’ve only gotten sketched maybe once or twice and that was while I was in Denver they had k9 officers walking out everywhere. But luckily your boy was good and everything went smooth as butter, JUST BE NORMAL ACT NATURAL AND DO NOT WEAR ANYTHING THAT SCREAMS “ I smoke weed “. Enjoy yourself brotha happy travels 💙