If those are being run down public roads, then DOT needs to address that. Where is the commercial
insurance?
Farm equipment, no DOT involved. There was a guy a while back looking at making one, and someone else has several.
If they hook it behind a farm tractor, and its all their own stuff, I don't think there's any requirements. I don't know if they are running a small pony compressor for air for the brakes, or just not using brakes at all.
That track hoe is not farming equipment.
Same in the UK up by the Lakes district. We were having dinner and these big 4x4 tractors would roar through town by the restaurant towing a trailer. Actually they roared right AT our table, then made a corner. It was a bit disconcerting.I saw similar sort of things a lot in Ireland. Farmers don't seem to own trucks over there and pull all manner of trailers with tractors - end dumps, equipment, flatbeds. I found it interesting how much they ran tractors up and down the road. I don't know how the brakes worked. That would be my fear with the lowboy pictured. A tractor can pull a whole bunch - but when it comes time to stop you get pushed all over.