Just for the heck of it, I tried to design a "low-level" Superliner. Let's take a Viewliner dimension car that can travel over the entire Amtrak system. It would be possible to build a "low-level" Superliner with the following restrictions:
Full height Bedrooms and Roomettes can have upper and lower beds at the ends of the cars over the trucks.
Roomettes and Bedrooms in the center section would have lower beds only. Bedrooms would have slightly wider "double beds" for up to two passengers and roomettes would have single width beds for one passenger. Aisles would run down the center of the bottom level and along one side of upper level.
Break the car into three parts and module sections as follows:
(Use the windows for approximate module location)
(Numbers in parenthesis are maximum passenger capacity):
FRONT SECTION
Section 1+2 - Double Bedroom H - w/Upper and Lower beds (2)
Section 3 - Double Bedroom A w/Upper and Lower beds (3)
Section 4 - Mezzanine area and stairways to center section. 1/3 car width for stairs up on one side + 1/3 car width for stairs down in center + shower module on one side
CENTER SECTION
Section 5 - 1 Single Roomette (1) opposite 2 toilet modules on bottom level + 1 Double Bedroom on upper level (2)
Section 6 - 2 Single Roomettes on bottom level (2) + 1 Double Bedroom on upper level (2)
Section 7 - 2 Single Roomettes on bottom level (2) + 1 Double Bedroom on upper level (2)
Section 8 - Full width Family Room on lower level with traverse bed and window seats/bed like Superliner Family Room but without upper bunks (3) + 1 Double Bed Bedroom on upper level (2)
REAR SECTION
Section 9 - 1 Double Roomette - Upper/Lower Beds + Stairs to upper level on one side (2)
Section 10 - 2 Double Roomettes w/Upper/Lower Beds - Center Aisle (4)
Section 11 - 2 Double Roomettes w/Upper/Lower Beds - Center Aisle (4)
So capacity would be 21 - 31? Capacity of the present Viewliner is 18 - 30.
I know this is a rough concept but it seems to me that the idea of a "low-level" Superliner just may not make sense since you really need the extra height to max out the capacity with upper bunks. I haven't really studied this but it looks like there isn't much advantage to the idea. And you must add to the equation that the present Viewliner is a really great design.
Maybe I'm missing something but at least some fun food for thought?
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