Originally Posted by
AndyPatterson
Very much unlike the airlines!
However, note that if checking bags (obviously not an issue on Acela/NER, but is an issue on the long-distance trains), you may not be able to check bags to an intermediate stop.
When traveling on the Acela, it
is possible to check baggage -- it just won't be transported on the train the passenger is riding, but on one of the long-distance trains instead. Short-checking could still be a problem, though.