AH16

Asian Highway 16 (AH16) is a road in the Asian Highway Network running 1031 km from Tak, Thailand to Đông Hà, Vietnam connecting AH1 and AH2 to AH1 after AH1 takes a turn from south to North after crossing Cambodia. The route is as follows:

Thailand

 * Thai Highway-12.svg Route 12: Tak - Phitsanulok - Khon Kaen  - Somdet - Mukdahan
 * Thai Highway-212.svg Route 212: Mukdahan - Bang Sai Yai
 * Thai Highway-239.svg Route 239: Second Thai–Lao Friendship Bridge

Laos

 * Route 9W, LAO.png Route 9W: Savannakhet - Xeno
 * Route 13, LAO.png Route 13: Xeno (concurrent with for 3 km)
 * Route 9E, LAO.png Route 9E: Xeno - Xépôn - Dansavan

Vietnam

 * QL9: Lao Bảo - Đông Hà