The Asian Highway Network (AH), also known as the Great Asian Highway, is a cooperative project among countries in Asia and Europe and the United Nations .
Asian Highway 1 (AH1) is the longest route of the Asian Highway Network, running 20,557 km (12,774 mi) from Tokyo, Japan via Korea, China, Southeast Asia.
To date the AH network comprises of slightly over 125,000 km of roads that have been selected for their potential to serve international trade.
The Asian Highway network is a regional transport cooperation initiative aimed at enhancing the efficiency and development of the road infrastructure in Asia.
The Asian Highway Network (or the Great Asian Highway) is a 141,000km network of roads running across 32 countries. It is being built with an intention to .