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How Derived is the Demand for Travel? Some Conceptual and Measurement Considerations

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Author Info
Patricia Mokhtarian (University of California, Davis)
Ilan Salomon (Hebrew University)

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Abstract

This paper contests the conventional wisdom that travel is a derived demand, at least as an absolute. Rather, we suggest that under some circumstances, travel is desired for its own sake. We discuss the phenomenon of undirected travel – cases in which travel is not a byproduct of the activity but itself constitutes the activity. The same reasons why people enjoy undirected travel (a sense of speed, motion, control, enjoyment of beauty) may motivate them to undertake excess travel even in the context of mandatory or maintenance trips. One characteristic of undirected travel is that the destination is ancillary to the travel rather than the converse which is usually assumed. We argue that the destination may be to some degree ancillary more often tan is realized. Measuring a positive affinity for travel is complex: in self-reports of attitudes toward travel, respondents are likely to confound their utility for the activities conducted at the destination, and for activities conducted while traveling, with their utility for traveling itself. Despite this measurement challenge, preliminary empirical results from a study of more than 1900 residents of the San Francisco Bay Area provide suggestive evidence for a positive utility for travel, and for a desired travel time budget (TTB). The issues raised here have clear policy implications: the way people will react to policies intended to reduce vehicle travel will depend in part on the relative weights they assign to the three components of a utility for travel. Improving out forecasts of travel behavior may require viewing travel literally as a "good" as well as a "bad" (disutility).

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Paper provided by Institute of Transportation Studies, UC Davis in its series Institute of Transportation Studies, Working Paper Series with number UCD-ITS-REP-01-15.

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Date of creation: 01 Sep 2001
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Handle: RePEc:cdl:itsdav:ucd-its-rep-01-15

Note: oai:cdlib1:itsdavis-1023
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Keywords: demand travel measurement undirected policy

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References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
  1. Mokhtarian, Patricia L. & Salomon, Ilan, 1997. "Modeling the desire to telecommute: The importance of attitudinal factors in behavioral models," Transportation Research Part A: Policy and Practice, Elsevier, vol. 31(1), pages 35-50, January. [Downloadable!] (restricted)
  2. Mokhtarian, Patricia L. & Raney, Elizabeth A. & Salomon, Ilan, 1997. "Behavioral response to congestion: identifying patterns and socio-economic differences in adoption," Transport Policy, Elsevier, vol. 4(3), pages 147-160, July. [Downloadable!] (restricted)
  3. Ilan Salomon & Patricia Mokhtarian, 1998. "What Happens When Mobility-Inclined Market Segments Face Accessibility-Enhancing Policies?," Institute of Transportation Studies, Working Paper Series UCD-ITS-REP-98-07, Institute of Transportation Studies, UC Davis. [Downloadable!]
  4. Genç, Murat, 1994. "Aggregation and heterogeneity of choice sets in discrete choice models," Transportation Research Part B: Methodological, Elsevier, vol. 28(1), pages 11-22, February. [Downloadable!] (restricted)
  5. Calfee, John & Winston, Clifford, 1998. "The value of automobile travel time: implications for congestion policy," Journal of Public Economics, Elsevier, vol. 69(1), pages 83-102, July. [Downloadable!] (restricted)
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Cited by:
(explanations, Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.)

  1. Schwanen, Tim & Dieleman, Frans M. & Dijst, Martin, 2002. "The impact of metropolitan structure on commute behavior in the Netherlands: a multilevel approach," ERSA conference papers ersa02p069, European Regional Science Association. [Downloadable!]
  2. John V. Thomas & Robert Noland, 2005. "Multivariate analysis of trip-chaining behavior," ERSA conference papers ersa05p541, European Regional Science Association. [Downloadable!]
    Other versions:
  3. Thomas de Graaff & Piet Rietveld, 2004. "Telework, Frequency of Working Out-of-home, and Commuting: A Labor Supply Model and an Application to the Netherlands," ERSA conference papers ersa04p294, European Regional Science Association. [Downloadable!]
  4. Salomon, Ilan & Cohen, Galit & Nijkamp, Peter, 1999. "ICT and urban public policy : does knowledge meet policy?," Serie Research Memoranda 0047, VU University Amsterdam, Faculty of Economics, Business Administration and Econometrics. [Downloadable!]
  5. Veronique Van Acker & Frank Witlox, 2005. "Exploring the relationship between land-use system and travel behaviour - some first findings," ERSA conference papers ersa05p601, European Regional Science Association. [Downloadable!]
  6. Juan Luis Nicolau, 2006. "Does The Consumer'S Variety-Seeking Behavior Condition The Willingness To Travel Further?," Working Papers. Serie EC 2006-17, Instituto Valenciano de Investigaciones Económicas, S.A. (Ivie). [Downloadable!]
  7. Lothlorien Redmond & Patricia Mokhtarian, 2001. "Modeling Objective Mobility: The Impact of Travel-Related Attitudes, Personality and Lifestyle on Distance Traveled," Institute of Transportation Studies, Working Paper Series UCD-ITS-RR-01-09, Institute of Transportation Studies, UC Davis. [Downloadable!]
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