There are some very sad stories related to people assuming that a road on a map is actually a road in the way people living around cities generally think of the term.
I took a drive on what started as a very nice, scenic forest service road in Colorado and ended up in the back of an active cinder mine. We got through the mine ok, but never would have been able to make it back up the mountain the way we came down. I spent the whole time worrying we were going to get stuck behind a locked fence until the workers came back Monday morning.
Each district is responsible for their maps which is why quality varies. They really need to standardize and enforce those standards properly.
https://en.wikipedia.org/wiki/Dahala_Khagrabari
Edit: Too late. Ceded to Bangladesh in 2015.
I built a, for the time, very good data logging setup for my Jeep and mapped some trails[0] in 2001. Why? The maps provided by the USFS and the timber leaseholders were (and still are) wrong.
I also made a point the first time I was in Europe of renting a car and driving to Baarle-Hertog[1] and walking to all of the enclaves, as well as enclaves within enclaves.
[0]: https://github.com/ryjones/Area29SnowmobileTrailMap
[1]: https://en.wikipedia.org/wiki/Baarle-Hertog#List_of_enclaves