Asia

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

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

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

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/jsp/eng/index.jsp

Metropolitan Expressway Company Limited
Covers metropolitan Tokyo, Japan. Toll information and service area facility information.
http://www.shutoko.jp/english/

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

Taiwan
Folder including shots from various trips. More are located in other folders on the site.
http://public.fotki.com/apjung/roadgeeking/taiwan/

Taiwan Area National Freeway Bureau
Maintainer. Map, construction information, and traffic status.
http://www.freeway.gov.tw/English/

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