This might be helpful...
Towing World Official Website
It's got LOTS of info....
I also use this site:
Just choose your state on the left side.
Also, DOT might have some information, regarding our tow vehicles, but not sure about that.
Tina + Dutch and Bell, Bobo, Harley, Buddy (the dogs)
2011 F350 Lariat 4x4 DRW SuperCrew 6.7L (B&W setup w/Air Lift 5000 Ultimate)
2014 Columbus 365RL (Airflex and Voyager package)
Nights Camped 2014 - 154
, 2015 - 32, 2016 - 4