Hello.
Uh sorry, I put the wrong value on "type" key. This is a type=superroute relation (not a normal type=route).
It would contains the 6 relations that make the AH14 (split by single Country, one for every direction), but as the routes in China and Vietnam were different from the official ESCAP routes, I just did the two ways for Myanmar only.
I'm trying to organize better all the Asian highway network. On this wiki page https://wiki.openstreetmap.org/wiki/Asia/Asian_Highway_Network you'll see my edits done in the last 2 weeks.