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Using Microsimulation and NGSIM Data to Validate HCM Methodology for Oversaturated Freeway Weaving Segments
Title
Using Microsimulation and NGSIM Data to Validate HCM Methodology for Oversaturated Freeway Weaving Segments.
Creator
Jolovic, Dusan, Graduate College
Date Issued
2012-3-30
PURL
http://purl.flvc.org/fau/fd/FA00005664
Format
Document (PDF)
Use of microsimulation to access HCM2010 methodology for oversaturated freeway segments
Title
Use of microsimulation to access HCM2010 methodology for oversaturated freeway segments.
Creator
Jolovic, Dusan, College of Engineering and Computer Science, Department of Civil, Environmental and Geomatics Engineering
Abstract/Description
Highway Capacity Manual (HCM) 2010 methodology for freeway operations contain procedures for calculating traffic performance measures both for undersaturated and oversaturated flow conditions. However, one of the limitations regarding oversaturated freeway weaving segments is that the HCM procedures have not been extensively calibrated based on field observations on U.S. freeways. This study validates the HCM2010 methodology for oversaturated freeway weaving segment by comparing space mean...
Show moreHighway Capacity Manual (HCM) 2010 methodology for freeway operations contain procedures for calculating traffic performance measures both for undersaturated and oversaturated flow conditions. However, one of the limitations regarding oversaturated freeway weaving segments is that the HCM procedures have not been extensively calibrated based on field observations on U.S. freeways. This study validates the HCM2010 methodology for oversaturated freeway weaving segment by comparing space mean speed and density obtained from HCM procedure to those generated by a microsimulation model. A VISSIM model is extensively calibrated and validated based on NGSIM field data for the US 101 Highway. Abundance of the NGSIM data is utilized to calibrate and validate the VISSIM model. Results show that HCM methodology has significant limitations and while in some cases it can reproduce density correctly, the study finds that speeds estimated by the HCM methodology significantly differ from those observed in the field.
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Date Issued
2012
PURL
http://purl.flvc.org/FAU/3342202
Subject Headings
Roads, Design and construction, Traffic engineering, Express highways, Management, Intelligent transportation systems, Design and construction
Format
Document (PDF)