I don't think so, but I may be wrong. Gotta figure most fifth wheel / truck combos are less than 30k gross, and most big trucks are over 80k. Not sure if it's a gross weight deal or just the fact that we, as in the RVers, are "recreational" use opposed to commercial. Will be interested to see if someone has any documentation. I've passed up every one of them for 10 years regardless of load, and haven't got any blue lights yet.
John and Rebecca Dickson
Emma-7 / Little John-5 / Iva-1
Full Timing Again, Rev B
2013 Ford F-350 Lariat CC LB PSD
2015 SOB TT - With OC's Awning Poles (#8)
At least in Heaven, RVs will be perfect, and I won't have to keep fixing them.