Determine and assign area type for network links using gis technology
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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

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
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


What makes this approach different
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


The methodology in a nutshell
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


Generate intensity surface

Continuous Economic Intensity Surface

Generate Intensity Surface




Implementation
Implementation

  • A fusion of:

    • Python

    • ESRI ArcObjects

    • Caliper GISDK


Model validation improved
Model Validation Improved

Central Business District


Model validation improved1
Model Validation Improved

Outlying Central Business District


Model validation improved2
Model Validation Improved

Mixed Urban Area Type


?

[email protected]

602 452-5075

Petya Maneva

[email protected]

602 452-5034

Wang Zhang


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