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First published online January 1, 2009

Estimation of Travel Time on Urban Networks with Midlink Sources and Sinks

Abstract

This paper presents a methodology for estimation of average travel time on signalized urban networks by integrating cumulative plots and probe data. This integration aims to reduce the relative deviations in the cumulative plots due to midlink sources and sinks. During undersaturated traffic conditions, the concept of a virtual probe is introduced, and therefore, accurate travel time can be obtained when a real probe is unavailable. For oversaturated traffic conditions, only one probe per travel time estimation interval–-360 s or 3% of vehicles traversing the link as a probe–-has the potential to provide accurate travel time.

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Article first published online: January 1, 2009
Issue published: January 2009

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© 2009 National Academy of Sciences.
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Authors

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Ashish Bhaskar
EPFL-ENAC-ICARE-LAVOC, Station 18, CH-1015 Lausanne, Switzerland.
Edward Chung
EPFL-ENAC-ICARE-LAVOC, Station 18, CH-1015 Lausanne, Switzerland.
André-Gilles Dumont
EPFL-ENAC-ICARE-LAVOC, Station 18, CH-1015 Lausanne, Switzerland.

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