I recently purchased my first motorhome, and I used the locator that blangen posted above to find an inspection station. There were plenty of options. It worked out well for me--the repair facility that I was hoping to use was on the list, and was able to both inspect and repair the Ford E350 chassis. Good thing, because just as I was pulling in for the inspection, a brake line blew and they were able to do the repair. Since then, they've done other work for me and they are my go-to mechanics.