Title: THE INTEGRATION OF GIS AND REGIONAL TRANSPORTATION MODEL DEVELOPMENT
Abstract: Development and validation of the Northeast Regional Planning Model (NERPM) is an example of GIS integrated into the TRANPLAN based model development process. The development of the Traffic Analysis Zone (TAZ) structure used GIS to merge, realign, and split zones based on the underlying highway network and hydrographic features. Socioeconomic data was then developed and verified using the property appraisers database parcel data and geocoded employer addresses spatially joined with TAZ polygons. GIS spatial analysis techniques were also used to determine transit walk access percentages by zone. The most innovative aspect of the application of GIS was the creation of the highway and transit networks from the ground up. A special suite of programs, which used NERPM for beta testing, was developed to establish interfaces with GIS-based networks and transportation planning software. The programs allow TRANPLAN users to build, modify, and display transportation networks from a GIS database and allow for exporting modeling outputs to interface with GIS-based networks. Incorporated into the process are routines for arc-based turn prohibitors and penalties, traffic analysis zone connectors, and transit stops. The results of a GIS-based model process, including accurate traffic analysis zone loadings, more reliable socioeconomic data, and added flexibility lead to increased reliability on future travel demand forecasts.
Publication Year: 2002
Publication Date: 2002-01-01
Language: en
Type: article
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