Abstract

Using Spatial Models to Automate Extended Workplace Allocation
Track: Census and Geodemographics
Author(s): Kearey Smith

This research identifies a process that can be used to adapt the extended workplace allocation procedures currently used by the Census Bureau, to work with new data collected from the American Community Survey (ACS). GIS-based models have been developed to produce, for every census tract of residence (origin-tracts) in the U.S., a set of suitable workplace "donor" tracts (destination-tracts) for allocation of unknown workplaces. A method has been developed to determine the travel time and distance between census tracts within a given county's commute shed. This methodology can be applied on a nation-wide basis for each county's commute shed. A Geographic Information Systems (GIS) spatial model was developed using Esri ArcGIS tools, to automate the process of calculating the free-flow, un-congested travel time and distance between census tracts within each county's commute shed. A method is proposed to model roadway congestion times by facility type for Metro areas.

Kearey Smith
Metropolitan Transportation Commission
101 8th Street
Oakland , California 94607
United States
Phone: 510 817 5738
E-mail: ksmith@mtc.ca.gov