If they have been stewarding that area for years why the problem now with traffic in that area when its been going on for probably the same amount of time ? They have to know that bikers don't go off trail and use that trail only for entry and exit. Right ?
Somebody have a hidden agenda possibly ? A hidden "threat" ?
Anything beyond educational signage is bs. Especially if the signage is a bike with a line though it ? Because if that's the case they better have a sign with a line going through a hiker etc. etc. Then shoot any deer that dares trample there way through that prairie .