Quote:
Originally Posted by k1052
The Acela Express trainsets are tilting, though restricted on certain parts of the NEC due to clearance issues. I think the general lack of tilting trains in the US has more to do with the limited speeds that most of our passenger network operates at and the loooong times in between equipment replacement. IIRC, all the new Talgo cars purchased for Amtrak will be tilting models also.
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All the Talgos used for the Cascades service are tilting trainsets as are the 4 new Talgo sets being built. To enable tilting, fixed trainset consists are effectively necessary, AFAIK. Amtrak prefers to utilize standard single and double level cars for its primary fleet so it can swap cars and adjust consists as needed. Fixed length consists work best on well defined corridor services where the trainsets stay on that corridor with a higher frequency of service.