Publication Detail

Modeling Individuals' Relative Desired Travel Amounts


Research Report

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Suggested Citation:
Choo, Sangho, Gustavo O. Collantes, Patricia L. Mokhtarian (2001) Modeling Individuals' Relative Desired Travel Amounts. Institute of Transportation Studies, University of California, Davis, Research Report UCD-ITS-RR-01-13

This report is one of a series of research documents produced by an ongoing study of individuals' mobility and attitudes toward travel. The data are obtained from 1,357 residents of three San Francisco Bay Area neighborhoods, who work either part- or full-time and commute.

The key premise of this research is as follows: although the demand for travel is, for the most part, derived from the demand to engage in spatially-separated activities (as conventional wisdom holds), travel itself has an intrinsically positive utility that contributes to the demand for it. That affinity for travel itself (partially operationalized in this study through the Travel Liking variables) varies by person, mode, and purpose of travel. The goals of this research are to better understand causes and effects of that affinity for travel. The key variables used in the study can be grouped into 11 categories: Objective Mobility, Subjective Mobility, Relative Desired Mobility, Travel Liking, Attitudes, Personality, Lifestyle, Excess Travel, Mobility Constraints, Travel Modifiers and Demographics.

Ultimately, structural equations models will be developed to properly account for the multiple interrelationships among these variables. As initial building blocks toward that ultimate goal, however, single-equation models are being developed for the major types of endogenous variables in the system. This report focuses on modeling Relative Desired Mobility; companion reports focus on Objective Mobility and Subjective Mobility.