GVWR

Most hotshots are towing empty RVs with 1 Ton trucks and the UVW seldom exceeds the GVWR.

If they have a DOT number they have to comply. DOT uses the VIN to pull the manufacture specs into the weight stations computer. When they drive on the scales they have all green on the screen including the GVWR. During my research, I sat in weight station and watch the weighting process. Ask the operator how many get nailed for over GVWR and very few commercial trucks since the GVWR on commercial trucks are rate high enough they normally exceed GAWR before GVWR but it does happen.

So much misinfo I don't know where to start....anyways..

1. First off hotshots do not pull RVs. Your talking rv transporters.
What you need to do is hang around on a actual hotshot (commercial haulers) website and educate yourself on what dot does and what they look at and how they find it concerning weights and sizes.

2. DOT at the weigh station or roadside does not pull mfg weight specs from anywhere with a computer ......unless the trucks certification tag has been removed. Dot tells us vehicle mfg websites weight specs are not that good of a source to impound a vehicle or pass out overweight tickets

3. How do I know this....Having pulled commercially for over eleven years first as a operator and then a owner for over 1.2 million miles in a 8 state area pulling heavy GN trailers with declared 25k-32k gross combined weight.
I've been through most scale house in a eight state area and I know what they look at.

Here's how it works.
I can registered a one ton DRW truck with a 6000 fawr and 9800 rawr at 15800 lb gross weight.
Now add my 21k lb triaxle GN trailer = 36800 gross combined weight for my declared GCW.

Now when I rolled on the scales DOT looks at the trucks steer axle weight....drive axle weight....trailer axle weight. I'm under my declared operating 36800 GCW.

And I'm under the trucks steer....drive....and trailer axle/tire load ratings.

No where does dot (at the scale house or roadside) use the truck mfg GVWR for how much load the truck can legally safely carry.

By the way.....a vehicle brakes are a function of the axle rating. Thats one reason dot allows the sum of the axle rating (15800 lbs) as the trucks gross weight.
Same with my triaxle GN trailer with 7k axles = 21000 lbs of braking performance
...or 36800 lbs of braking performance at a minimum.