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Title: COMPARING STRATIFIED CROSS-CLASSIFICATION AND LOGIT-BASED TRIP ATTRACTION MODELS
Accession Number: 00939751
Record Type: Component
Availability: Transportation Research Board Business Office 500 Fifth Street, NW Abstract: Trip attraction models constitute half of the trip generation step in traditional 4-step transportation planning models. This means they can play an important role in determining the overall accuracy and responsiveness of such models. Yet it would appear that relatively little has been done to examine potential improvements in practical trip attraction modeling, taking it beyond the basic use of simple linear relationships based on different categories of employment or amounts of floorspace. In particular, the lack of compatibility between stratified trip production models that consider socioeconomic differences in trip-making, and regression-based trip attraction models that do not, may severely limit the ability of trip distribution models to correctly allocate workers to jobs. Recent practical model development work in Cleveland and Phoenix considered two alternative approaches to the modeling of trip attractions. In Cleveland a fairly straightforward cross-classification approach was used, where attraction rates for proportions of workers in different income and car ownership categories were computed using a disaggregate workplace survey. In Phoenix a more novel logit-based approach was used, where proportions of workers by auto ownership and household income were established using the logit formula with utility functions that included various measures of industrial classification and accessibility, using readily available Census Transportation Planning Package (CTPP) data. The intent of both approaches is to appropriately attract the correct number of workers by socioeconomic stratification based on the mix and quantity of employment types at the trip destination. This paper describes the two approaches in detail, considering their theoretical foundations and mathematical properties and discussing some of the practical issues that arise in their development in a United States context. The results of the two models are also examined. It is concluded that these two approaches represent useful advances in the practical modeling of trip attractions beyond the use of simple ratios based on floorspace or total employment, with relative merits that depend on the context of the specific application.
Supplemental Notes: The CD-ROM contains the proceedings of the sixth, seventh and eighth conferences. The seventh conference proceedings were published in September 1999.
Monograph Title: Monograph Accession #: 00939750
Language: English
Corporate Authors: Transportation Research Board 500 Fifth Street, NW Authors: Freedman, JDavidson, W ASchlappi, MHunt, John DouglasEditors: Donnelly, RPagination: p. 1-15
Publication Date: 2002
Conference:
Seventh TRB Conference on the Application of Transportation Planning Methods
Location:
Boston, Massachusetts Features: References
(3)
; Tables
(12)
TRT Terms: Uncontrolled Terms: Geographic Terms: Subject Areas: Data and Information Technology; Economics; Highways; Planning and Forecasting; Society; I72: Traffic and Transport Planning
Files: TRIS, TRB
Created Date: Mar 14 2003 12:00AM
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