Don't bet on it. I was driving down the Natchez Trace a few miles north of Tupelo, MS a couple of years ago and met a semi pulling what appeared to be a 48 or 53 ft. van. About 5 miles later I met a park ranger. I would loved to have been a fly on the wall when that ranger caught up to that semi. I'm reasonably sure the driver's GPS told him to take that road.

For those who may not know, the Natchez Trace is a federally owned and funded parkway. It is patrolled by U. S. park rangers who have zero sense of humor. The speed limit is 50 mph and they are authorized to write tickets for 51 mph. It is also strictly forbidden to get on that road with a commercial vehicle, regardless of the size. My uncle was driving a hearse on it one time. Ranger pulled him over, escorted him to the next crossroad and told him to get off the Trace. The crossroad was a gravel road in the middle of nowhere.