Have been using the system since it first became available for deploying/recovering instruments and studies of habit use. After the removal of selective availability, I find it accurate to within 2 or 3 yards and within a foot or so with differential correction. Absolute faith in the system, but have seen issues with maps and those that write the code for route selection.
Like said previously, there are roads in their data bases with historic paper based origins. They existed in the horse and buggy days, but are no longer maintained.
When the city folks have to start opening gates, it's time for them to turn around.
A lot of the old paper maps though depict wilderness trails etc that are no longer maintained and are not rendered on newer versions.
OnX shows a lot of desert roads near here that no longer exist. They're grown over with sagebrush which takes years to grow. I've tried to find some when 4 wheeling and failed. Onx will show that I'm on them but there's nothing there.
