| The "derived demand" perspective on daily travel, which has become axiomatic in the transportation field, holds that travel is derived from the demand to participate in spatially-separated activities. The act of traveling itself is not considered to offer any positive utility. This dissertation continues a recent effort to challenge this paradigm by directly modeling the interrelationships among travel amounts, perceptions, affections (or liking), and desires, and, in doing so, asking: why do some individuals want to travel more, and others less? By modeling travel affection and desire, I am, importantly, first acknowledging the existence of these measures and, second, formally quantifying their relative impact on daily travel amounts and each other.; Five short-distance and five long-distance categories of travel are examined, specifically: overall, work/school-related, personal vehicle and entertainment travel for both distance categories; commute; and airplane. The models are estimated using data collected in 1998 from more than 1,300 commuting workers in the San Francisco Bay Area. Cross-model analysis reveals three robust relationships, namely: (1) myriad measures of actual travel amounts work together to affect qualitative perceptions of those amounts; (2) those perceptions are consistently important in shaping desires to reduce or increase one's travel; and (3) affections for travel have a positive influence on those desires. A cross-model econometric comparison by estimation technique---maximum likelihood, asymptotic distribution free, bootstrapping, and Mplus ---and sample size is included.; The implications of the work are largely theoretical, but the ideas presented can lead to practical suggestions. For instance, those promoting travel demand management strategies should pay attention to the travel perceptions of their target audience. Even though someone may be objectively traveling a lot, if he does not perceive those amounts to be high, he may not embrace a policy aimed at reducing his travel. And the same can be said for those who enjoy travel: those who see value in travel will logically be less motivated to reduce their travel amounts. The survey respondents exhibit a considerable degree of liking for travel of all kinds studied, and this work unequivocally demonstrates the importance of travel liking to travel behavior. |
