EFFECTS OF INCREASED HIGHWAY CAPACITY: RESULTS OF A HOUSEHOLD TRAVEL BEHAVIOR SURVEY

Few current transportation issues engender more controversy than the effects of adding new highway capacity on traffic and travel demand. The purpose of adding new highway capacity is to reduce traffic congestion and improve automobile travel times, and in some cases, air quality. These changes in turn affect travel behavior by affecting peoples' choice of modes of travel, their choice of destination, and their choice of travel route. Less well known is how travel time changes caused by capacity increases may affect total travel demand, especially trip generation. Estimating the magnitude of this effect on trip generation is particularly unclear. One of the primary purposes of this project was to examine the effects of new capacity on trip generation, since in most conventional North American travel forecasting models, trip generation is not sensitive to transportation supply variables. A travel behavior survey was developed and administered to isolate the various effects of new highway capacity and identify those not currently treated by conventional travel forecasting models. The survey and its results are described in this paper.

• Record URL:
  https://onlinepubs.trb.org/Onlinepubs/trcircular/481/481-003.pdf
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  • Find a library where document is available. Order URL: http://worldcat.org/issn/00978515
• Supplemental Notes:
  • 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.
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  Transportation Research Board

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• Authors:
  • Dowling, R G
  • Colman, S B
• Conference:
  • Workshop on a Conceptual Framework for Simultaneous Vehicle and Infrastructure Design (SVID)
  • Location: Washington, D.C.
  • Date: 1997-12-17 to 1997-12-18
• Publication Date: 1998-2

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; References; Tables;
• Pagination: p. 21-32
• Monograph Title: HIGHWAY CAPACITY EXPANSION AND INDUCED TRAVEL: EVIDENCE AND IMPLICATIONS
• Serial:
  • Transportation Research Circular
  • Issue Number: 481
  • Publisher: Transportation Research Board
  • ISSN: 0097-8515

Subject/Index Terms

• TRT Terms: Air quality; Highway capacity; Traffic congestion; Travel behavior; Travel demand; Travel surveys; Travel time; Trip generation
• Uncontrolled Terms: Induced travel
• Subject Areas: Highways; Planning and Forecasting; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 00748097
• Record Type: Publication
• Report/Paper Numbers: E-C001
• Files: TRIS, TRB
• Created Date: Apr 1 1998 12:00AM