IMHO, one of the really under-appreciated problems with off-road trails is their intersections with roads. Frequently, it's really hard to make a left turn onto a MUP from the road, with no signal and with none of the car traffic even aware that someone might want to take a left. Left turns from the trail to the road often suffer similar problems. Boulder, CO has done a great job with its underpasses, but in places where under/overpasses are impractical, we need special care for intersection signage and visibility. Maybe that could be part of your Reno standard.