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Updating of digital road map

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1 Author(s)
Shibata, M. ; Japan Digital Road Map Assoc., Tokyo, Japan

Japan Digital Road Map Association (JDRMA) started to construct the digital road map database for the whole Japan in 1988. The first database was completed in 1989, and consequently the updating started in 1990. There are two kinds of data sources for updating the JDRMA database. One is the newly issued topographic maps, which include both roads and other features but are not updated every year. The other is the information from the road administrators; it is used to update the road networks. Every year the information of the newly opened or improved roads is collected and used to update the road network in the database. Other information is also used to supplement the two main information sources. Documents of transportation facilities other than roads and information from the users are utilized. The investigation to improve the updating procedure is continued

Published in:

Vehicle Navigation and Information Systems Conference, 1994. Proceedings., 1994

Date of Conference:

31 Aug-2 Sep 1994

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