USE OF INCREMENTAL FORM OF LOGIT MODELS IN DEMAND ANALYSIS

Many transportation systems management policies are geared toward making minor changes in the level of service (LOS) provided by transportation networks in an urban area. Estimation of changes in travel demand is usually prerequisite to assessing the costs and benefits associated with such policies. The pivot-point technique, which uses the incremental logit model, is especially suited for this type of analysis. This procedure predicts revised travel behavior based on existing travel behavior and changes in LOS experienced by a trip maker. The major advantage of this procedure is that no knowledge of detailed existing LOS data on all relevant alternatives available to a trip maker is required. Only estimates of existing market shares and proposed changes in modal disutilities are necessary. Based on the values of the coefficients of travel time and travel cost reported in transportation literature, default values of the coefficients of in-vehicle travel time, out-of-vehicle travel time, and out-of-pocket travel cost have been suggested. These coefficients can then be used to calculate the changes in modal disutilities due to changes in travel time, travel cost, or both. The use of this technique is discussed by using a case study.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1980/775/775-005.pdf
• Summary URL:
  https://scholar.google.com/scholar_lookup?title=USE+OF+INCREMENTAL+FORM+OF+LOGIT+MODELS+IN+DEMAND+ANALYSIS&author=A.+Kumar&publication_year=1980
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03611981
• Supplemental Notes:
  • Publication of this paper sponsored by Committee on Passenger Travel Demand Forecasting. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
• Authors:
  • Kumar, Ashok
• Conference:
  • 59th Annual Meeting of the Transportation Research Board
  • Location: Washington District of Columbia, United States
  • Date: 1980-1-21 to 1980-1-25
• Publication Date: 1980

Media Info

• Media Type: Print
• Features: Figures; Maps; References; Tables;
• Pagination: pp 21-27
• Monograph Title: Travel Demand Models: Application, Limitations, and Quantitative Methods
• Serial:
  • Transportation Research Record
  • Issue Number: 775
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Analysis; Floating structures; Logits; Transportation system management; Travel budgets; Travel costs; Travel demand; Travel time
• Uncontrolled Terms: Floating bodies
• Subject Areas: Bridges and other structures; Highways; Planning and Forecasting; I10: Economics and Administration; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 00334191
• Record Type: Publication
• ISBN: 0309031192
• Files: TRIS, TRB
• Created Date: Oct 28 1981 12:00AM