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Research article
First published January 2000

Validation Results for Four Models of Oversaturated Freeway Facilities

Fred L. Hall, Loren Bloomberg, Nagui M. Rouphail, Brian Eads, and Adolf D. MayView all authors and affiliations
Volume 1710, Issue 1
https://doi.org/10.3141/1710-19

Abstract

Some researchers have noted that the current procedures in the Highway Capacity Manual (HCM) may not be appropriate for analyzing complex or oversaturated freeway facilities. The results of a comparison of an HCM-based procedure with field data from six such freeway sites are reported. Because simulation has often been suggested as an alternative to the HCM for oversaturated freeway facilities, three simulation models (CORSIM, FREQ, and INTEGRATION) were also used to analyze these same six sites. The results suggest that the HCM-based procedures do as well as the three simulation models in reproducing the average speeds across the freeway facilities.

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References

1. Special Report 209: Highway Capacity Manual (1997 update). TRB, National Research Council, Washington, D.C., 1998.
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2. May A. D. Capacity and Level of Service for Freeway Systems. Third Interim Report. Oak Ridge National Laboratory; FHWA, U.S. Department of Transportation, July 1998.
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Published In

Volume 1710, Issue 1
Pages: 161 - 170
Article first published: January 2000
Issue published: January 2000

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© 2000 National Academy of Sciences.
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Authors

Affiliations

Fred L. Hall
School of Geography and Geology, McMaster University, Hamilton, Ontario L8S 4K1, Canada
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Loren Bloomberg
CH2M HILL, P.O. Box 12681, Oakland, CA 94604
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Nagui M. Rouphail
Department of Civil Engineering, North Carolina State University, Raleigh, NC 27695-7908
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Brian Eads
Crawford, Murphy & Tilly, Inc., 1 Memorial Drive, Suite 500, St. Louis, MO 63102
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Adolf D. May
Room 108A McLaughlin Hall, Institute of Transportation Studies, University of California, Berkeley, CA 94720
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