y-not is ABSOLUTELY correct about clearance lighting and RV's. Anything sitting at 8' wide MUST have the correct lighting on it's front and corners, that IS the law. Some RV's have them and others do not, but the law says that the front and rear both must be marked accordingly. If you have an RV or a enclosed trailer that is properly marked, then the truck does not have to have them. If you have an RV, enclosed trailer w/o them or pull an 8' wide flatbed then the truck MUST have them. When I bought my 2006 3500 SRW it had them, some 3500 SRW's on the lot did not, those who did not had to have them put on before they could be sold, and I recall a post somewhere either on this site or another site that those sold w/o them were actually recalled by DC to get them put on. That recall stemmed from someone getting a ticket with a SRW and challenging the law about clearance lights on 1-tons, ultimately it was DC who paid the mans fines as it was a factory oversight not installing them. So I guess the only thing dumber about NOT having them on a 1-ton is not knowing the law that requires them.
When I moved to New Mexico 5 years ago, the state required a VIN and lighting inspection on my trucks before issuing a title and registration. I had factory cab lights on one of my trucks and a visor with lights on the other. The state license person commented that my trucks met the legal lighting requirements, both are 1-tons, 1 is a dually and the other is a SRW. I travel a lot pulling my horse trailer and have to stop at livestock inspections now and then in some states, more than once a state inspector has commented that my Ford 1-ton would have been ticked if I hadn't installed the visor clearance lights. I came from Pennsylvania where annual vehicle inspection is a requirement, back in 1989 my inspector told me that I would have to add the visor or cab mounted clearance lights if I was pulling anything 8' wide, which is measured AT the widest point, the axle. Just because the DOT's have not made an issue about horse trailers and such going down the road for private use doesn't mean you don't have to comply with the law. More and more people are complaining about being stopped and getting fix-it tickets or fined for not meeting the lighting laws. Homeland Security is having a real big push about all of this getting corrected, I bet they will win out overall in no time, and everyone will either get it right or pay and then get it right.
The next issue will be about axles in combination and a regular dirvers license. Most all states regular drivers licenses state they are good for any combination of 3 axles and towing 10K. Last time I went through a toll booth I had to pay for 4 axles - 2 on the truck and 2 on the trailer. Could I possibly not have the right driver's license at this point - maybe so. Could I possibly be ticketed and fined at this point - maybe so.
CD