Examining the Quality of Synthetic Origin–Destination Trip Table Estimated by Path Flow Estimator
Publication: Journal of Transportation Engineering
Volume 131, Issue 7
Abstract
Path flow estimator (PFE) is a one-stage network observer proposed in the transportation literature to estimate path flows and path travel times from traffic counts in a transportation network. The estimated path flows can further be aggregated to obtain the origin–destination flows, which are usually required in many transportation applications. In this paper, we examine the capability of PFE in capturing the total demand of the study network as well as individual demands. Numerical examples are provided to show the effects of the number and locations of traffic counts on the quality of estimates. The results indicate that PFE has the potential to correctly estimate the total demand when proper observations, in terms of the number and their locations, are provided. In general, the spatial distribution of demands is difficult to estimate even when traffic counts are available on all network links.
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Acknowledgment
This research was supported in part by the California Partners for Advanced Transit and Highways (PATH) Program, United States. The contents of this paper reflect the views of the writers who are responsible for the facts and the accuracy of the data presented herein, and do not necessarily reflect the official views or policies of the State of California. This paper does not constitute a standard, specification, or regulation.
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Information & Authors
Information
Published In
Journal of Transportation Engineering
Volume 131 • Issue 7 • July 2005
Pages: 506 - 513
Copyright
© 2005 ASCE.
History
Received: Feb 24, 2004
Accepted: Jun 11, 2004
Published online: Jul 1, 2005
Published in print: Jul 2005
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