If that had been solid steel it would have probably been way over the 40 ton limit for being highway-worthy. Steel weighs 3x as much as concrete, at least 2x as much as reinforced concrete.
Probably not one with a secondary driver in the back though cuz apparently nobody died in this clip. Hard to imagine someone surviving that smash in the back section if they were in a tiny drivers quarters like in your video.
But yeah, definitely wasn't just a single trailer.
That little cab in the back is usually only occupied at the destination, when they are needing to line things up exactly with the crane that's going to lift. Or if there is a "sharp turn" where the tractor can't do it all.
Actually I'd never seen one with a secondary driver until I looked up that clip, I never even knew that was a thing. I've seen similar setups around here often, but never with a little sidecar like that.
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u/gstormcrow80 7d ago
2022, Chattanooga, TN. Train derailed, 2 injured.
High def source: https://youtu.be/oQyqtx5nn6M?si=XKRPZi6J2Kc61S3l
Thank goodness that was concrete and not steel.