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Title: UTILIZING GIS CONCEPTS IN ROADWAY PROJECT DEVELOPMENT
Accession Number: 00636508
Record Type: Component
Availability: American Association of State Highway and Transportation Officials (AASHTO) 444 North Capitol Street, NW Abstract: GIS software relates a spatial database with a text database. The spatial database consists of single points, polylines, and polygons (closed polylines). An index is encoded with each point in the spatial database, relating it to the text database. To create an instance of the spatial database (i.e. a map), a region of the database is isolated and points and polylines are extracted. The index for each point is used to look up symbol definitions in a symbol table. Then symbols, both single and linear, are applied to replace the points and polylines. Only those points and polylines that are visually desirable are extracted to create an instance of the database. The Colorado Department of Highways (CDOH) is using this concept for development of roadway project sets of plans.
Language: English
Corporate Authors: American Association of State Highway and Transportation Officials (AASHTO) 444 North Capitol Street, NW Federal Highway Administration 1200 New Jersey Avenue, SE Transportation Research Board 500 Fifth Street, NW Authors: Allen, APagination: 3p
Publication Date: 1990
Conference:
Proceedings of the 1990 Geographic Information Systems (GIS) for Transportation Symposium
Location:
San Antonio, Texas Features: Figures
(1)
Uncontrolled Terms: Geographic Terms: Old TRIS Terms: Subject Areas: Highways; Planning and Forecasting; I21: Planning of Transport Infrastructure
Files: TRIS, TRB, USDOT
Created Date: Sep 8 1993 12:00AM
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