United States Department of Transportation
i
Accessibility, Location, and Employment Center Growth
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2015-03-01
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[PDF-5.96 MB]
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TRIS Online Accession Number:01561626
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Edition:Final Report
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Abstract:The purpose of this research is to examine the relationship between accessibility and the growth of employment centers in order to improve our understanding of how transportation investments influence the spatial organization of metropolitan areas. Although research on the existence of employment centers – concentrations of employment outside the tradition downtown – is extensive, we have little understanding of how these centers emerge and grow, and what role transportation access may play in this process. Studies of employment centers are limited by data availability: there is no publicly available source for reliable, highly detailed and disaggregate employment data. For this research we used the National Establishment Time-Series (NETS) Database, a proprietary database that consists of time series establishment level data for the entire US for the years 1990 through 2009. The NETS data are highly detailed; they provide information on business type, size, location, corporate structure, etc. Despite the richness of the database, however, we discovered that it is not comparable to any Tech Report data source, raising serious questions of validity. We devote one chapter of this report to an assessment of the quality and reliability of the NETS data.
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