In the White Mountain National Forest, unimproved camping is 200 feet from water sources and trails, 1/4 mile from roads. If you have OnX (not sure if Gaia supports this, worth checking), you can drop a pin on the road and create a radius to get an idea of how far you need to go.
I have boondocked in my truck in turnaround/parking areas on little traveled forest roads and never had an issue, but the rangers have been known to knock on windows at the really busy trailheads (really really busy, since covid) as people are known to sleep in their cars to get an alpine start and sometimes they'll overflow into the shoulders of the road.
I have boondocked in my truck in turnaround/parking areas on little traveled forest roads and never had an issue, but the rangers have been known to knock on windows at the really busy trailheads (really really busy, since covid) as people are known to sleep in their cars to get an alpine start and sometimes they'll overflow into the shoulders of the road.