Asian Highway 15 (AH15) is a road in the

Asian Highway Network The Asian Highway Network (AH), also known as the Great Asian Highway, is a cooperative project among countries in Asia and the United Nations Economic and Social Commission for Asia and the Pacific (ESCAP) to improve their connectivity via hig ...

running from Hồng Lĩnh,

Vietnam Vietnam, officially the Socialist Republic of Vietnam (SRV), is a country at the eastern edge of mainland Southeast Asia, with an area of about and a population of over 100 million, making it the world's List of countries and depende ...

Udon Thani Udon Thani (, ) is a city in Isan ( Northeast Thailand), the capital of Udon Thani Province and the sixth largest city in Thailand. The city municipality (''thesaban nakhon'' / city proper) had a population of 130,531 people as of 2019, while Ud ...

Thailand Thailand, officially the Kingdom of Thailand and historically known as Siam (the official name until 1939), is a country in Southeast Asia on the Mainland Southeast Asia, Indochinese Peninsula. With a population of almost 66 million, it spa ...

connecting

AH1 Asian Highway 1 (AH1) is the longest east-west route of the Asian Highway Network, running from Tokyo, Japan via the Korean Peninsula (South Korea and North Korea), China (Mainland China and Hong Kong), Mainland Southeast Asia (Vietnam, Camb ...

to AH12. The route is as follows:

Vietnam

* QL8:

Vinh Vinh () is the capital of Nghệ An province and an economic and cultural center of North-Central Vietnam. A key point in the East–West economic corridor linking Myanmar, Thailand, Laos and Vietnam, the city is situated in the Southeast of ...

() - Cau Treo

Laos

* Route 8: Nam Phao - Vieng Kham * Route 13 (Concurrent with ): Vieng Kham -

Thakhek Thakhek (, ; , ), the capital of Khammouane Province, is a town in south-central Laos on the Mekong River and the administrative centre of the district with the same name. The Third Thai–Lao Friendship Bridge, linking Thakhek and Nakhon Phano ...

Thailand

Route 295:

Third Thai–Lao Friendship Bridge The Third Thai–Lao Friendship Bridge over the Mekong is a bridge that connects Nakhon Phanom Province in Thailand with Thakhek, Khammouane Province in Laos. The bridge's foundation stone was laid on 6 March 2009, and it opened for traffic on ...

Route 212: At Samat - Nakhon Phanom * Thai Highway-22

Route 22:

Nakhon Phanom Nakhon Phanom (, ; , ) is a town (''thesaban mueang'') in northeastern Thailand, capital of Nakhon Phanom Province. The town covers ''tambons'' Nai Mueang and Nong Saeng and parts of ''tambons'' At Samat and Nong Yat, all in Mueang Nakhon Phano ...

{{AHN Asian Highway Network Highways in Thailand Roads in Vietnam Roads in Laos