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What is GIS-T? Beyond the State DOTs

What is GIS-T? Beyond the State DOTs. Bruce Spear Federal Highway Administration Washington, DC. Current GIS Use in Transportation Agencies. State DOTs Over 95% have some operational GIS capability Most GIS applications focus on facility management functions

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What is GIS-T? Beyond the State DOTs

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  1. What is GIS-T?Beyond the State DOTs Bruce Spear Federal Highway Administration Washington, DC

  2. Current GIS Use in Transportation Agencies • State DOTs • Over 95% have some operational GIS capability • Most GIS applications focus on facility management functions • Most GIS applications limited to data visualization • Limited applications involving spatial or network analysis

  3. Current GIS Use in Transportation Agencies (continued) • Metropolitan Planning Organizations • Over 50% have some operational GIS capability • GIS initially used for public presentations • Growing GIS use in preparing data for transportation planning models • Land Use • Demographics & Employment

  4. Current GIS Use in Transportation Agencies (continued) • Public Transit Agencies • Under 20% have operational GIS capability • Few identified GIS applications • Transportation Management Centers • GIS used principally for visualization and public dissemination. • Very limited use of ITS data in operational and planning analyses.

  5. Barriers to GIS Use in Transportation Agencies • Benefits not well articulated • High costs for geo-spatial data development or conversion • Competing non-GIS “legacy tools” (e.g., transportation planning models) • Different “business application” requirements

  6. Barriers to Data Sharing Among Transportation Agencies • Benefits not well articulated • No standard feature / attribute definitions • Different accuracy / detail requirements • Different application requirements for network database • Incompatible formats for network data among “legacy tools”

  7. So why bother? • Atlanta “Benefits and Burdens” Study • Develop measures for EJ • Politically sensitive, significant impact on new transportation projects in Atlanta • Used GIS to examine distribute of impacts geographically, by demographic group • Difficult to integrate key data maintained by different agencies: GDOT, ARC, MARTA

  8. Promising Trends • Some GIS software vendors addressing transportation business applications • ESRI – UNETRAN • Caliper – TransCAD • Federal regulations putting increased emphasis on location specificity • HPMS reporting • Environmental Justice • Air Quality Conformity

  9. Promising Trends (cont.) • New transportation planning models require more accurate location data • NYMTC Best Practices Model • TRANSIMS • Geo-spatial data becoming more accurate and accessible • GPS • Remote imagery • Interagency data sharing

  10. Probable Future • GIS use in transportation agencies will grow, principally as an “end user” tool. • Increasing pressure to make geo-referenced transportation data accessible to the public. • Data sharing among agencies will increase as barriers are overcome. • Increased reliance on outside “experts” for more complex GIS analyses.

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