AH15
Asian Highway 15 (AH15) is a road in the Asian Highway Network running 560 kilometres (350 mi) from Vinh, Vietnam to Udon Thani, Thailand connecting AH1 to AH12. The route is as follows:
Vietnam
QL12: Vinh () - Cha Lo
Laos
Route 12: Na Phao - Thakhek
Route 13 (Concurrent with ): Thakhek
Thailand
Route 295: Third Thai–Lao Friendship Bridge
Route 212: At Samat - Nakhon Phanom
Route 22: Nakhon Phanom - Udon Thani