Abstract
We developed CAD data format, which can be converted into GIS data at the maintenance stage, based on the “CALS/EC Action Program 2005 in MLIT”. And this study resulted in an improvement of “Road Fundamental Data Attribute Set” as a common specification for CAD software using SXFVer3.0. Moreover, National government developed common check program for CAD data and convert program into GIS data, and each private CAD software company develop useful CAD software corresponding to “Road Fundamental Data Attribute Set”. Finally, we had some experiments in actual national road works using these tools.
