In the United States, Amtrak allows passengers to bring their own unopened alcohol on board, but with strict rules:
Important: If you are found consuming your own alcohol outside of a private room, you may be asked to dispose of it, and you could face removal from the train.
For other rail services (commuter/regional trains): Generally prohibited. Most local commuter rails (like Metra, MTA, SEPTA, etc.) have policies that forbid any consumption of alcohol on board, and often prohibit carrying open containers. Unopened containers may be allowed as baggage, but you must check the specific carrier’s rules.
Key Advice: Always check Amtrak’s current alcohol policy before you travel, as rules can change. Never consume your own alcohol in coach or public areas. For commuter trains, assume it’s not allowed unless their website explicitly states otherwise.
In summary: Yes, you can typically bring unopened alcohol on an Amtrak train, but you can only legally drink it if you have a private sleeping car room. On most local commuter trains, it’s best not to bring any alcohol at all.