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Incorporating Observed and Unobserved Heterogeneity in Urban Work Travel Mode Choice Modeling

CHANDRA R. BHAT
Transportation Science
Vol. 34, No. 2 (May 2000), pp. 228-238
Published by: INFORMS
Stable URL: http://www.jstor.org/stable/25768911
Page Count: 11
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Incorporating Observed and Unobserved Heterogeneity in Urban Work Travel Mode Choice Modeling
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Abstract

An individual's intrinsic mode preference and responsiveness to level-of-service variables affects her or his travel mode choice for a trip. The mode preference and responsiveness will, in general, vary across individuals based on observed (to an analyst) and unobserved (to an analyst) individual characteristics. The current paper formulates a multinomial logit-based model of travel mode choice that accommodates variations in mode preferences and responsiveness to level-of-service due to both observed and unobserved individual characteristics. The model parameters are estimated using a maximum simulated log-likelihood approach. The model is applied to examine urban work travel mode choice in a multiday sample of workers from the San Francisco Bay area.

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