That area is for horses, quads and sleds. No on-highway vehicles allowed on any trails. Before it was a PLUZ, different story.
The Green trails are Horse trails used for tourist rides. Good for hiking. You'd never fit a Jeep on them.
The Yellow, quad trails are only for quads, tight and skeg holes, but that's only what I've seen before staging and H3 like 7 years ago.
There are many trails between the trunk road and rocky along the South and North Ram River and even a couple that go to the NSR. Everything that's not in a PLUZ is fair game.