Car Availability Versus Car Ownership Modeling: Theoretical Discussion and Empirical Findings

Car ownership forecasting is one of the major components of travel demand modeling. It bridges the gap between the land use models and the sequence of travel demand models. The level of ownership/availability of a private automobile has a direct impact on both the trip generation and the modal split sub-models: a higher car ownership level is associated with greater overall mobility and, understandably, a higher percentage of auto trips. The consistency of these relationships has been confirmed by numerous transportation studies and research works over the last two decades. A close interrelationship between car ownership, trip generation and modal split was the reason they were considered as a joint model in some research works .This paper compare the concepts of car ownership with car availability. The following aspects are considered in this paper: (1) theoretical discussion; (2) analysis of empirical findings from Baltimore, Maryland; (3) implications of both modeling approaches on the entire methodology of travel demand modeling; and (4) final conclusions and recommendations for practical applications.

• Corporate Authors:

  World Conference on Transport Research Society

  Secretariat, 14 Avenue Berthelot
  69363 Lyon cedex 07,   France 
• Authors:
  • Supernak, Janusz
• Conference:
  • World Conference on Transport Research: Research for Transport Policies in a Changing World
  • Location: Hamburg , Germany
  • Date: 1983-4-26 to 1983-4-29
• Publication Date: 1983

Language

• English

Media Info

• Media Type: Print
• Edition: Volume I and Volume II
• Features: Figures; References;
• Pagination: pp 304-320
• Monograph Title: Research for Transport Policies in a Changing World: Proceedings of the World Conference on Transport Research

Subject/Index Terms

• TRT Terms: Accessibility; Automobile ownership; Empirical methods; Forecasting; Mobility; Ownership; Transportation planning; Travel demand
• Uncontrolled Terms: Availability
• Subject Areas: Highways; Planning and Forecasting; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 01079369
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 22 2007 10:14AM