USASpiritlineTrains
Crews did the "change" at Washington Union (if the train was a through Florida or Virginia service train)...depending on the run assignments, Amtrak chages cres on SOME, not all DC - New York runs at 30th Street, so a larte sign-up crew only works half way and can return same night back to their base. Same applies to SOME crews from New York working half way. Also trainms from New York to Harisburg will change crews at 30th Street also, some depending on the train do work all the way through and just flip ends from engine to control cab car during station time. Otherwise early saign up crews will work all the way through to NY, and return mid-day to afternoon back with a train to "DC"
Crews on the Boston line will work from New York to New Haven, then another crew will work it from New Haven to either Boston or Springfield.this is a "left over" from the NH-PC days when it was two separate divisions since seniority and runs were separate and also "interrupted" by an engine change.
Hope this helps
Doug
Happiness is when the AI-trains appear where you want them to