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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.

Yes, and those semi-trailers are composed of two parts: a chassis that accepts standard containers, which holds the freight. So the internal floor to internal ceiling dimensions for the freight capacity are determined by the container used, whereas with the Roadrailers, there is no separate chassis and freight container, its an integrated unit, and the internal floor to internal ceiling dimensions for the freight capacity are whatever you build it to.

Indeed, if there is a more "rounded" loading gauge in the target network, the top of the Roadrailer trailer could be made higher and the freight capacity larger by putting the top higher than a rectangular box will allow, and slanting the sides near the top.

Now, I presume that the Roadrailer is designed within the AAR standard loading gauge, but so long as it fits within the STRACNET loading gauge:

... if there is a loading gauge constraint on some shortline between the STRACNET corridor and the origin/destination loading dock, it can just hit the road.

Railrunner may well have to work through European loading gauge issues if they are aiming for the European market. Its not likely to be a binding constraint for them given the standard AAR loading gauge to work with. A conventional Roadrailer would not be the same challenge, as you just design the trailer dimensions to suit the target market.

I've been accused of being a Marxist, yet while Harpo's my favourite, it's Groucho I'm always quoting. Odd, that.

by BruceMcF (agila61 at netscape dot net) on Wed Jul 18th, 2012 at 03:40:05 PM EST
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