A number of urban transport studies have shown the overwhelming importance of household car availability as a variable in determining whether journeys are made by non-car modes, particularly bus. But few studies have attempted to explain the detailed choice processes involved and therefore the extent to which their results are accurate and can be influenced by policy. This lack of explanation and understanding has meant that the concept remains somewhat confusing both to professional transport planners and members of the public who are asked about it in surveys. This paper aims to discuss four main aspects of the car availability decision process: (I) the likely accuracy of survey data; (II) the allocation and/or transferability of household cars between the members of the households; (III) the characteristics of particular journeys which influence the significance of car availability in modal choice the influence of the car availability concept on car passenger travel. The paper also attempts to draw some general conclusions on the implication for further surveys and analysis using the car availability concept. Some new evidence is presented based on recent surveys (both qualitative and guantitative) carried out in South Yorkshire. (Author/TRRL)

  • Supplemental Notes:
    • Transport Planning Methods. Proceedings of Seminar N held at the PTRC Summer Annual Metting, University of Sussex, England, 4-7 July 1983.
  • Corporate Authors:

    PTRC Education and Research Services Limited

    110 Strand
    London WC2,   England 
  • Authors:
    • BAILEY, J M
  • Conference:
  • Publication Date: 1983

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 239-255

Subject/Index Terms

Filing Info

  • Accession Number: 00382863
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Report/Paper Numbers: Volume P243
  • Files: ITRD, TRIS
  • Created Date: Apr 30 1984 12:00AM