Originally Posted by
riceowls
Will they take a tandem?
No Amtrak will not take tandems unless it has couplers and you box it and it goes as baggage.
https://www.amtrak.com/bike-faqs
I was on a train where a guy had a family bike with something like 4-5 place. He as able to break it down such that it turned into a regular bike. He used bicycles checking then carried on the tubes.