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Overcoming the (apparent) problem of inconsistency in O-D matrix estimations

Jornsten, Kurt and Wallace, Stein W (1993) Overcoming the (apparent) problem of inconsistency in O-D matrix estimations. Transportation Science, 27 (4). pp. 374-380.

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Abstract

Recently a number of models for the estimation of origin-destination trip matrices from traffic counts have been presented. One class of models assumes knowledge of the proportional usage of each link by the interzonal traffic. These models result in an underspecified, and often inconsistent, system of linear equations. Several authors have addressed the problem of inconsistency by, in different ways, changing the traffic count data so as to achieve consistency. We argue that, modeling-wise, this is not a sound approach because inconsistent data is a natural part of any origin-destination matrix estimation problem. By using a stochastic programming approach the inconsistent input data becomes a natural part of the estimation process. This is done by viewing the traffic counts as realizations of some unknown underlying distribution of traffic flows.

Item Type: Article
Journal or Publication Title: Transportation Science
Subjects:
Departments: Lancaster University Management School > Management Science
ID Code: 45369
Deposited By: ep_importer_pure
Deposited On: 11 Jul 2011 19:31
Refereed?: Yes
Published?: Published
Last Modified: 09 Apr 2014 22:31
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/45369

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