Utilities - Maps of India  
   Information about India's national highways.
   http://www.mapsofindia.com/utilities/

Intertoll  
   Maintains toll roads in Asia and Africa.
   http://www.intertoll.co.za/

National Highways Authority of India  
   Official site. Includes news, maps, and road network information.
   http://www.nhai.org/

Asian Roads  
   Details and photos from a 2001 trip.
   http://members.cox.net/mkpl3/asia/asia.html

Tarmat Infrastructural and Engineering Ltd  
   Road builder in India.
   http://www.tarmatindia.com/

Korea Highway Corporation  
   Deals with construction, repair and maintenance, toll collection, development of areas by expressways, and related information. Includes details about a revised route numbering system.
   http://www.freeway.co.kr/eng/html/Corporation/sub01_01.html

Metropolitan Expressway Public Corporation  
   Covers metropolitan Tokyo, Japan. Site includes route log, history, toll information, and organization structure details.
   http://www.mex.go.jp/english/

Asian Highway Network  
   Network designed by the United Nations. Site includes history, maps, and photography.
   http://www.unescap.org/ttdw/?MenuName=AsianHighway