A structural equations analysis of commuters' activity and travel patterns |
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Authors: | Arun R Kuppam Ram M Pendyala |
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Institution: | (1) Cambridge Systematics, Inc., 1300 Clay Street, Suite 1010, Oakland, CA 94612, USA;(2) Department of Civil and Environmental Engineering, University of South Florida, ENB 118, 4202 East Fowler Avenue, Tampa, FL 33620- 5350, USA |
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Abstract: | An exploratory analysis of commuters' activity and travel patterns was carried out using activity-based travel survey data
collected in the Washington, DC metropolitan area to investigate and estimate relationships among socio-demographics, activity
participation, and travel behavior. Structural equations modeling methodology was adopted to determine the structural relationships
among commuters' demographics, activity patterns, trip generation, and trip chaining information. Three types of structural
equations model systems were estimated: one that models relationships between travel and activity participation, another that
captures trade-offs between in-home and out-of-home activity durations, and a third that models the generation of complex
work trip chains. The model estimation results show that strong relationships do exist among commuters' socio-demographic
characteristics, activity engagement information, and travel behavior. The finding that significant trade-offs exist between
in-home and out-of-home activity participation is noteworthy in the context of in-home vs. out-of-home substitution effects.
Virtually all of the results obtained in this paper corroborate earlier findings reported in the literature regarding relationships
among time use, activity participation, and travel.
This revised version was published online in June 2006 with corrections to the Cover Date. |
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Keywords: | activity frequency activity pattern commuter behavior structural equations time use travel duration |
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