On the way back down the Dempster. There are a few truck accessible spots to camp just off the road but not many that I saw. I never saw this sign at the hart river road until the way back down on my way out, it is not posted on the main road, you would actually need to stop and get off the road to check out this nasty off-road track. There is one campsite up there that a basic 4x4 can get to on a stream, maybe 2km from the Hwy or so, but beyond that would be an event for a couple trucks at the least with all the mud at the time I was there. There were several atv's that had been up there as it was hunting season.