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Are you sure we are talking about the same thing? On the official site of RailRunner, all photos and graphs of the Terminal Anywhere system show a bi-modal system consisting of semi-trailers specialized for running in both modes (chassis with road wheels and fifth wheel coupler on and with specialised ends for railroad mode) and bogies only. The only difference seems to be that in Terminal Anywhere the trailer is lifted by being pushing up a slide on the bogie, while if I read my sources right, in classic RoadRailer the trailer is raised by active operation of its suspensions. Here is a RailRunner video showing both the jacking-up and jacking-down of a semi-trailer on the bogie:
It doesn't appear to be any higher than a standard North American semi-trailer or a Triple Crown trailer, either,having similar fifth wheel heights and being 13,5' high when loaded with a high-cube container (which would be 11 cm higher than a standard European semi-trailer, however, so they'll need to modify the trailers if their tentative European export plans are to come to anything).
BTW, what is the top speed of classic Roadrailers on rail?
closer to the tracks than with any piggyback railcar.
Quite likely, but by how much? 50 mm, 100 mm, 150 mm? Again, do you have any figures on the wheeled end lifting height? I again couldn't find any, even with the Triple Crown help. Here I find a good side view, but the 135 mm I estimate between road wheel and rail (based on the trailer interior height data) isn't really useful.
One whose delusions are out of fashion.
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