IDEAS home Printed from
MyIDEAS: Log in (now much improved!) to save this article

On the formation of travel demand models and economic evaluation measures of user benefit

Listed author(s):
  • H C W L Williams
Registered author(s):

    This paper examines a variety of issues within the context of two main themes: the formation of travel demand and economic evaluation measures which are mutually consistent within a theory of rational choice; and a consideration of the structure of models which are representations of the trip decision process over several dimensions: location, mode, and route. Random utility theory is invoked to explore both the role and properties of composite costs or index prices in the 'recursive' approach to the structuring of travel choice models, and their significance in the economic evaluation problem. It is shown that the specification of these costs must be made very precisely, with respect to the demand model form chosen, in order to retain the underlying assumption that the traveller is an optimal decisionmaker. It is argued that the structure of 'simultaneous' models currently in use is inconsistent with the form of utility function assumed to generate these models. Furthermore, it is shown that the 'simultaneous' and 'recursive' forms are special cases of a more general choice model structure which takes specific account of correlation or 'commonality' of trip attributes. A number of applications are discussed in which consistent demand models and perceived user benefit measures are constructed. These include the formation of strategic transport planning models and of models for mixed-mode, multimode, and multiroute systems. The formalism allows definitive answers to be given to a number of problems of current interest in transportation planning, which have been incorrectly or incompletely treated.

    If you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.

    File URL:
    File Function: abstract
    Download Restriction: Fulltext access restricted to subscribers, see for details

    File URL:
    File Function: main text
    Download Restriction: Fulltext access restricted to subscribers, see for details

    As the access to this document is restricted, you may want to look for a different version under "Related research" (further below) or search for a different version of it.

    Article provided by Pion Ltd, London in its journal Environment and Planning A.

    Volume (Year): 9 (1977)
    Issue (Month): 3 (March)
    Pages: 285-344

    in new window

    Handle: RePEc:pio:envira:v:9:y:1977:i:3:p:285-344
    Contact details of provider: Web page:

    No references listed on IDEAS
    You can help add them by filling out this form.

    This item is not listed on Wikipedia, on a reading list or among the top items on IDEAS.

    When requesting a correction, please mention this item's handle: RePEc:pio:envira:v:9:y:1977:i:3:p:285-344. See general information about how to correct material in RePEc.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Neil Hammond)

    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.

    If references are entirely missing, you can add them using this form.

    If the full references list an item that is present in RePEc, but the system did not link to it, you can help with 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 profile, as there may be some citations waiting for confirmation.

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

    This information is provided to you by IDEAS at the Research Division of the Federal Reserve Bank of St. Louis using RePEc data.