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Determine and Assign Area Type for Network Links Using GIS Technology

Determine and Assign Area Type for Network Links Using GIS Technology. Petya Maneva (presenter) and Wang Zhang May 9, 2013. Area Type in Travel Demand Modeling. Based on employment and population As a link attribute in transportation network, area type affects : roadway’s capacity

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Determine and Assign Area Type for Network Links Using GIS Technology

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  1. Determine and Assign Area Type for Network Links Using GIS Technology Petya Maneva (presenter) and Wang Zhang May 9, 2013

  2. Area Type in Travel Demand Modeling • Based on employment and population • As a link attribute in transportation network, area type affects : • roadway’s capacity • free-flow speed • possible travel delay

  3. What Makes This Approach Different? • Additional New Inputs: • Share of developed area for each TAZ • Big retail centers • High number of university students • Large and scarcely populated areas • New Technique: • Intensity surface using spatial interpolation technique

  4. The Methodology in a Nutshell • Determine initial economic intensity using a larger set of variables • Correct for special cases such as retail centers • Interpolate among centroids of developed areas • Go from continuous to categorical variables • Transfer area type values from polygons to links

  5. Continuous Economic Intensity Surface Generate Intensity Surface

  6. Area Type Polygons

  7. Area Type at the Network Links Level

  8. Implementation • A fusion of: • Python • ESRI ArcObjects • Caliper GISDK

  9. Model Validation Improved Central Business District

  10. Model Validation Improved Outlying Central Business District

  11. Model Validation Improved Mixed Urban Area Type

  12. ? pmaneva@azmag.gov 602 452-5075 Petya Maneva wzhang@azmag.gov 602 452-5034 Wang Zhang

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