Analysis and integration of spatial data for transportation planning.
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2009-06-01
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Edition:Technical Report: Sept. 2006-Aug. 2008
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Abstract:Transportation planning requires substantial amounts of data and cooperation among transportation planning ; agencies. Advances in computer technology and the increasing availability of geographic information ; systems (GIS) are giving transportation planners the ability to develop and use data with a much higher ; degree of efficiency. However, as information systems advance, the need to provide effective data ; integration/exchange protocols and procedures to reduce redundancy and data collection costs is becoming ; more important. Many factors influence the effectiveness of data exchange and data integration efforts, such ; as data compatibility, data access, data quality, completeness, metadata, hardware, software, and staff ; expertise. This research resulted in a catalog of spatial data sources available to transportation planning ; agencies in Texas. The work included a synthesis of current transportation planning practices in Texas with ; a focus on spatial data integration and exchange issues, meetings with transportation planning and data ; stakeholders, the development of a map of data sources, the development of a preliminary logical data model ; of spatial data entities, and a compilation of metadata documents for a sample of data sources. Developing ; the catalog of categories and subcategories for transportation planning spatial data was an iterative process ; that involved several rounds of data entity categorization; analysis of the resulting structure for ; inconsistencies, gaps, and redundancies; and subsequent changes to the data entity categorization scheme. In ; the end, the three-level grouping structure resulted in 7 categories, 63 subcategories, and 589 spatial data ; entities. The research also resulted in a prototype web-based map and metadata viewer called Transportation ; Planning GIS (TPGIS) Data Viewer.
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Main Document Checksum:urn:sha256:a6c9286b894417cbd0ba512fbfdc498ac3702b8c5cd93bcce6464cf1fd0ff94d