As a result of economic and social developments in recent years, the structuring of information systems precisely adapted to the needs of users is now being promoted in the transport sector in the form of T-net concept, data bases, and mobile information systems. At the same time, information networking is in progress. Meanwhile, the furtherance of EDI (electronic data interchange) is currently being studied worldwide primarily in transport and trade areas, and Japan, for its part, is also positively wrestling with international standardization activities, including the dispatch of specialists to international agencies concerned.