Anonymous on 11/29/2007 4:24:25 PM:
When we rode the annual DNS ride a few years ago, we discussed this topic, with one of the rangers, and here's what he told us.
Whenever they hear about a vehicle that's gone around the barriers, they try to get down there and find them, and get them off the trail. Motorized vehicles do more damage to the trail bed than non-motorized. The DNS already has to reapply gravel to the trail several times a year.
Another reason they don't want motorized vehicles is that there are portions of the trail that aren't as safe as others, especially after dark, where they've had to run off some troublemakers (drugs, public lewdness, and stuff like that). That's also why they have a curfew on the trail. If they allowed the motorized vehicles, then the troublemakers would ride them too, and they'd really be tearing up the trail, and could also get away easier if they were committing crimes along the trail.
The only motorized vehicles that are allowed are those owned by the DNS, which are used to maintain the trail, and enforce the laws.