2004 UC Proceedings Abstract
Isochronal Travel Time Maps Using Dynamic Segmentation Track: Transportation Author(s): Brian Hoeschen, Steven True, Ratna Korepella The 2002 Regional Travel Speed Study project developed by Maricopa Association of Governments produced the largest travel study in the country by covering almost 70,000 miles of runs over the 1,800 centerline miles. The project was managed using Esri's ArcSDE running on SQL Server and used a linear reference system for all travel speed and roadway features. One of the deliverable products was a map showing travel time isochrones in 5-minute intervals from/to various business centers. The travel time summaries were exported as event data using dynamic segmentation and used to create a network of the Phoenix area. A shape file of the network was created and the Network Analyst extension within ArcView 3.2 was used to create polygon areas of travel using the travel time results. This process proved to be an efficient way to create isochronal maps. Brian Hoeschen Carter and Burgess, Inc. Management Information Systems 707 17th Street Denver , CO 80202 US Phone: 303 820 4879 E-mail: hoeschenbd@c-b.com Steven True Carter and Burgess, Inc. Managment Information Systems 707 17th Street Denver , CO 80202 US Phone: 303 820 4805 E-mail: truesw@c-b.com Ratna Korepella Maricopa Association of Goverments Transporation Planning 302 North 1st Ave. Suite 300 Phoenix , AZ 85003 US Phone: (602) 254-6300 Fax: (602) 254-6490 E-mail: rkorepella@mag.maricopa.gov |
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