Quite right, Paul. It was only a starting place for my investigation. I thought it very unlikely that the boundary crisscrossed the Doi Lang-Doi San Ju Road and that started me looking for an explanation or some other way to verify my suspicion.
Subsequently, I added a comment that talks about the accuracy of the updated boundary I found online and indeed, the boundary lies directly alongside the Doi Lang-Doi San Ju Road in several places but it’s always on the Myanmar side, and it never crosses that road. The people that suggested the boundary follows the road were only approximately right.
I did a little more probing of the HDX site I found and it contains the following statement:
“Except where otherwise noted, content on this site is licensed under a Creative Commons Attribution 4.0 International license.”
What does this mean?