Tree limbs over sites and roads should be cut to 16 feet up or 3 feet from edge of traveled portion of the pad/road.. HOWEVER if you care short-cutting through two non-pull thorough sites, Tree limbs between the two need not be trimmed at all.
I do get upset when trees drag along the roof of my RV and I'm in the middle of the road... In fact here in SC, I called the state about one such tree.. now it hung down over the middle of the n/b lane of the road I took 2x a week with my class A and it hung down low enough to be an issue.
I just swung into the left lane
The hanger down was a dead branch no less.. Well it finally was cleared.
yup, a class A wacked it and knocked it down.