The AH project was initiated by the
United Nations in 1959 with the aim of promoting the development of international road transport in the region. During the first phase of the project (1960–1970) considerable progress was achieved, however, progress slowed down when financial assistance was suspended in 1975. ESCAP has conducted several projects in cooperation with AH member countries step by step after the endorsement of ALTID in 1992. The Intergovernmental Agreement on the Asian Highway Network (IGA) was adopted on February 28, 1997, by the Intergovernmental Meeting; 37000 kilometers, and was adopted on November 18, 2003, by the Intergovernmental Meeting; the IGA includes Annex I, which identifies 55 AH routes among 32 member countries totalling approximately 140,000 km (87,500 miles), and Annex II "Classification and Design Standards". During the 60th session of the ESCAP Commission at
Shanghai, China, in April 2004, the IGA treaty was signed by 23 countries. By 2013, 29 countries had ratified the agreement. In 2007, British drivers
Richard Meredith and Phil Colley completed the first full East to West journey of the entire highway in an
Aston Martin Vantage which was later sold to raise money for
UNICEF. The drive was a marketing stunt promoted by the car manufacturer. ==Implications==