If one stops at a weigh station and is over the limit for an axle, or two, then the
bureaucrat behind the desk can have you busted! Driving over a limit, be it speed or weight, is illegal! If the bureaucrat is looking for a promotion and can use busting an obscure, non-commercial, over-weight private coach as evidence of her
diligence...she will do it! Why on earth would anyone deliberately expose themselves to such a liability? Stay away from weigh stations! Get weighed at a truck stop.
Secondly, the "passenger or specialty vehicle" refers to commercial,for-hire passenger (such as a Greyhound Bus) vehicles or, as I recently discovered due to
an engine failure, a huge flatbed ("specialty vehicle")being towed by a tractor. The key here is "for hire" vehicles not private rv's.
in March I drove my 2015 Force 37BH,towing a U-Haul auto-flatbed, with my
personal vehicle securely strapped to it, from Ft. Myers,FL, to Sacramento for work. Total weight of the U-Haul was 6,000 lbs
and my Force was moderately loaded at about 26,000 lbs. It was exactly 3000 miles ( some minor side trips enroute). If I had a nickel for every weigh station I passed with LEO's in residence watching every vehicle going by I could buy a case of really good beer! I arrived Sacramento sans tickets. Over Labor Day weekend I returned the rig to Ft. Myers...sans tickets. Indeed, I passed one LEO-manned weigh station right behind a massive private, Prevost (H3???) towing a massive
Hummer. We both pressed on...
The moral of the story is: don't stop at weigh stations and don't worry about it!