Three of the most highly regarded disaggregate mode split models incorporate very different estimates of the responsiveness, or elasticity, of mode choice to changes in auto travel times and costs. These differences appear to be due in part to the varying specifications used by the model, and particularly whether certain variables (such as a dummy variable for CBD destinations or automobile ownership) are included in addition to the more traditional variables (such as travel time, cost, and household income). More research is needed on the implications of the theory of traveller choices for model specification and the effect of alternative, but theoretically justifiable, specifications on elasticity estimates. Until this research reduces our uncertainty about the elasticity of demand, analysts evaluating transportation policies should assess the sensitivity of their results to the range of plausible elasticities or models. (Author/TRRL) (TRRL)

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    Radarweg 29
    Amsterdam,   Netherlands  1043 NX
  • Authors:
    • Gomez-Ibanez, Jose A
    • Fauth, G R
  • Publication Date: 1980-6

Media Info

  • Features: References; Tables;
  • Pagination: p. 105-124
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00325118
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Sep 16 1981 12:00AM