The NTP is not loaded with anything really. Traffic can be heavy at "rush" hours near Jackson and Tupelo but easy to avoid those hours. Commercial vehicles are not allowed, not even a pickup truck with a tool box attached to the bed. And the Trace doesn't really go anywhere a motorist would want to get to in a timely manner, so most RVers exit ASAP. Most of the good stuff is park-and-hike to get to and most RVers just aren't those kind of people. No water parks, nothing for kids to do. And the campgrounds ON the Trace are primitive for the most part. Running water, toilets, no showers. And the speed limit is 45mph I believe.

I have never been bothered by traffic there, except Tupelo area I hit at a dumb time of day. I've biked it 3x, motorcycled is once, driven it a few more. Pretty place. Very calm, mostly remote.