IDEAS home Printed from https://ideas.repec.org/p/cdl/uctcwp/qt5537f0b1.html
   My bibliography  Save this paper

Travel Modeling With and Without Feedback to Trip Distribution

Author

Listed:
  • Johnston, Robert A.
  • Ceerla, Raju

Abstract

Many regional agencies model travel demand without feeding assigned travel times back to the trip distribution step. This method saves time and money but is likely to be biased in favor of build alternatives because it would underproject trip lengthening induced by the added capacity. Emissions and travel costs for the new roadway projects would be consequently underprojected. We wanted to compare outcomes under the two simulation methods. Our methods of modeling travel demand are outlined and then the results are presented and discussed. With full feedback, building new freeway carpool lanes appears less favorable than doing nothing or than expanding light-rail transit, in terms of induced travel. Light-rail-system expansion has lower emissions than does building new carpool lanes, with partial feedback, and full feedback increases these differences substantially. Better modeling methods, to be used in extensions of this research, are outlined.

Suggested Citation

  • Johnston, Robert A. & Ceerla, Raju, 2000. "Travel Modeling With and Without Feedback to Trip Distribution," University of California Transportation Center, Working Papers qt5537f0b1, University of California Transportation Center.
    • Handle: RePEc:cdl:uctcwp:qt5537f0b1
    as

    Download full text from publisher

    File URL: https://www.escholarship.org/uc/item/5537f0b1.pdf;origin=repeccitec
    Download Restriction: no
    ---><---

    More about this item

    Keywords

    Social and Behavioral Sciences;

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:cdl:uctcwp:qt5537f0b1. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Lisa Schiff (email available below). General contact details of provider: https://edirc.repec.org/data/itucbus.html .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.