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LOCATIONAL REFERENCING AND HIGHWAY SEGMENTATION IN A GEOGRAPHIC INFORMATION SYSTEM

It is described how GIS (geographic information system) concepts and technology can form the framework for an integrated highway information system. Locational referencing affects a highway segmentation scheme through the way locational data and attribute data are linked. The locational data describe highway geometry while the attribute data describe characteristics of a highway or highway-related events. Locational referencing and highway segmentation in combination determine data retrieval for analysis and graphic display of highway information. It is described how locational referencing and highway segmentation are fundamental design issues in a GIS-T (GIS for transportation). Areas for further research are noted.