Building a van for the Outer Banks and the Parkway
Length decides more here than drivetrain. Great Smoky Mountains National Park bars motorhomes, buses and vans longer than 25 feet from Heintooga Ridge Road and the Round Bottom gravel, and calls that gravel unsuitable for RVs. The Blue Ridge Parkway is open to private vehicles but not commercial traffic, has 26 tunnels, and holds a 50,000-pound gross weight limit across Price Lake Dam at Milepost 296.6.
On the coast the question is different. A van on the beach must be registered, licensed and insured for highway use with no more than two axles, and it should run under 20 psi, which means a compressor in the build and a plan for where the shovel and jack board live.