It is an 18k trailer, and it's a 13-15k lb GVWR truck. With that load he's probably pretty close to the legal limit on his truck rear axle. Combined we're looking at 31-33k.
Sure you could probably spec 14k lb dually trailer with a 12k truck but it'd be a pretty useless setup since you could barely scale anything.
@SuperTruckerOTR@GreeneElizabeth That's not a non-CDL setup, though. I doubt that driver is running without a CDL. That truck has a combined GVWR of around 31-36k. You can tell by the trailer axles. That paper MC tag gets rotated often, though, and that's the real issue here.
@BowTiedUM I like Agmatine a lot. The only thing about it is that its effects become indistinguishable from base line after a week or 2 of taking it for me.