Travel disutility concepts are used to discuss the basic factor motivating people to travel and the elements which define the character and quantity of travel. The paper also defines the components of future travel, discusses pertinent empirical analyses, and presents recommendations for future work in the transportation supply/demand area. The disutility components considered here are, terminal time/discomfort, terminal cost, in-motion time/discomfort, and in-motion costs. The phychological-economic phenomenon affecting travel demand change resulting from a highway supply change is illustrated by a curve, and the existence is postulated of a travel budget for every person. The future travel component-development, natural growth, directed, generated, and existing-are considered in the light of the disutility concepts, and related forecasting tools are outlined. Most travel demand theory sees the propensity to travel arising from a series of decisions. Factors affecting decisions are highway supply or level of service, and tripmaker characteristics such as income, age and trip purpose and timing. One reason why research into the dicisionmaking process has had limited success is that the major source of travel-demand information, origin-destination surveys, has never address the travel decisionmaking process. Future work should address the collection of a behavior illustrative data set, and the framework within which the decision process takes place. Travel budgets would be a productive area for study related to the framework.

  • Corporate Authors:

    Federal Highway Administration

    Urban Planning Division, 1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Zimmerman, S
    • West, M
    • Kozlowski, T
  • Publication Date: 1974-8

Media Info

  • Features: Figures; References;
  • Pagination: 29 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00135406
  • Record Type: Publication
  • Files: TRIS, USDOT
  • Created Date: Jul 22 1976 12:00AM