| 摘要 |
PROBLEM TO BE SOLVED: To set the levels of information that respective road stations supply to be similar and to reduce the burden of data maintenance. SOLUTION: Civil engineering offices 3a, 3b,..., a road station center 1, the stations 9a, 9b, 9c,... of the road are connected by a computer network so that they can communicate. The center server machine 18 of the road station center receives road regulation associated information that the civil engineering offices control and register it in a prescribed file. The center server machine 18 extracts road regulation associated information satisfying a specified condition in registered road regulation associated information and transmits it to the information supply machines of the plural road stations 9a, 9b, 9c.... The respective information supply machines display a map showing road regulation places and display road regulation associated information on the road regulation places with the map.
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