This is the floorplan of the new Stadler Rocky Mountaineer "Ultradomes". You can see that there is a lift between levels. There is a wheel chair accessible table in the dining room on the lower level and an ADA restroom. I don't see a place for a wheelchair on the upper level so I guess the person just stays in the chair on the lift.
There doesn't appear to be outside access to the lift, so a portable platform lift must be used to board the open platform at the rear.
Of course there aren't any sleeper versions of this architecture although Colorado Railcar did have a mock-up that never hit the rails.
This product would make an incredible long distance Amtrak car and it could have the unique feature of having two pass-throughs - one on each level. That would make it the most efficient use of space ever in a railcar literally doubling the capacity of any existing single-level equipment.
Stadler-Rail_Goldleaf-carriage_Floorplan.png (73.79 KiB) Viewed 2596 times
Interestingly, the wheelchair person is going to throw off their dining arrangements. There are exactly enough dining room seats to have two dinner seatings - 72 coach seats / 36 dining room seats.
Here's the full article:
http://railcolornews.com/2018/02/25/ca- ... untaineer/" onclick="window.open(this.href);return false;
https://wwwstadlerrailcom-live-01e96f7. ... m0816e.pdf" onclick="window.open(this.href);return false;