Cool concept, for sure. I’m wondering how that will be viewed, from an enforcement standpoint. If it’s considered a towed unit, it may require “doubles/triples endorsement”, for commercial drivers or vehicles. Since it has safety chains, that makes an argument for it being a towed unit versus it being a part of the towing vehicle (such as a dump truck strong arm, which this mimics).
It looks like it has brakes, but those could just be shields. I couldn’t tell. Again, this could be bad, if it doesn’t. All axles on commercial vehicles are required to have brakes, with a few exceptions. One of those exceptions is if the towed unit is under 3,000 pounds (I’m guessing this unit is less than that). However, if we are saying it’s a towed unit, so it doesn’t need brakes, then we have to also say it’s the first towed unit and any other units would qualify for doubles. Interesting.