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Incorporating Travel Time Reliability into the Highway Capacity Manual (2014)

Chapter: Reliability Technical Coordinating Committee

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Page 264
Suggested Citation:"Reliability Technical Coordinating Committee ." National Academies of Sciences, Engineering, and Medicine. 2014. Incorporating Travel Time Reliability into the Highway Capacity Manual. Washington, DC: The National Academies Press. doi: 10.17226/22487.
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Page 264

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TRB OVERSIGHT COMMITTEE FOR THE STRATEGIC HIGHWAY RESEARCH PROGRAM 2* Chair: Kirk T. Steudle, Director, Michigan Department of Transportation MEMBERS H. Norman Abramson, Executive Vice President (retired), Southwest Research Institute Alan C. Clark, MPO Director, Houston–Galveston Area Council Frank L. Danchetz, Vice President, ARCADIS-US, Inc. Malcolm Dougherty, Director, California Department of Transportation Stanley Gee, Executive Deputy Commissioner, New York State Department of Transportation Mary L. Klein, President and CEO, NatureServe Michael P. Lewis, Director, Rhode Island Department of Transportation John R. Njord, Executive Director (retired), Utah Department of Transportation Charles F. Potts, Chief Executive Officer, Heritage Construction and Materials Ananth K. Prasad, Secretary, Florida Department of Transportation Gerald M. Ross, Chief Engineer (retired), Georgia Department of Transportation George E. Schoener, Executive Director, I-95 Corridor Coalition Kumares C. Sinha, Olson Distinguished Professor of Civil Engineering, Purdue University Paul Trombino III, Director, Iowa Department of Transportation EX OFFICIO MEMBERS Victor M. Mendez, Administrator, Federal Highway Administration David L. Strickland, Administrator, National Highway Transportation Safety Administration Frederick “Bud” Wright, Executive Director, American Association of State Highway and Transportation Officials LIAISONS Ken Jacoby, Communications and Outreach Team Director, Office of Corporate Research, Technology, and Innovation Management, Federal Highway Administration Tony Kane, Director, Engineering and Technical Services, American Association of State Highway and Transportation Officials Jeffrey F. Paniati, Executive Director, Federal Highway Administration John Pearson, Program Director, Council of Deputy Ministers Responsible for Transportation and Highway Safety, Canada Michael F. Trentacoste, Associate Administrator, Research, Development, and Technology, Federal Highway Administration * Membership as of July 2014. RELIABILITY TECHNICAL COORDINATING COMMITTEE* Chair: Carlos Braceras, Deputy Director and Chief Engineer, Utah Department of Transportation ViCe Chair: John Corbin, Director, Bureau of Traffic Operations, Wisconsin Department of Transportation ViCe Chair: Mark F. Muriello, Assistant Director, Tunnels, Bridges, and Terminals, The Port Authority of New York and New Jersey MEMBERS Malcolm E. Baird, Consultant Mike Bousliman, Chief Information Officer, Information Services Division, Montana Department of Transportation Kevin W. Burch, President, Jet Express, Inc. Leslie S. Fowler, ITS Program Manager, Intelligent Transportation Systems, Bureau of Transportation Safety and Technology, Kansas Department of Transportation Steven Gayle, Consultant, Gayle Consult, LLC Bruce R. Hellinga, Professor, Department of Civil and Environmental Engineering, University of Waterloo, Ontario, Canada Sarath C. Joshua, ITS and Safety Program Manager, Maricopa Association of Governments Sandra Q. Larson, Systems Operations Bureau Director, Iowa Department of Transportation Dennis Motiani, Executive Director, Transportation Systems Management, New Jersey Department of Transportation Richard J. Nelson, Nevada Department of Transportation Richard Phillips, Director (retired), Administrative Services, Washington State Department of Transportation Mark Plass, District Traffic Operations Engineer, Florida Department of Transportation Constance S. Sorrell, Chief of Systems Operations, Virginia Department of Transportation William Steffens, Vice President and Regional Manager, McMahon Associates Jan van der Waard, Program Manager, Mobility and Accessibility, Netherlands Institute for Transport Policy Analysis John P. Wolf, Assistant Division Chief, Traffic Operations, California Department of Transportation (Caltrans) FHWA LIAISONS Robert Arnold, Director, Transportation Management, Office of Operations, Federal Highway Administration Joe Conway, SHRP 2 Implementation Director, National Highway Institute Jeffrey A. Lindley, Associate Administrator for Operations, Federal Highway Administration U.S. DEPARTMENT OF TRANSPORTATION LIAISON Patricia S. Hu, Director, Bureau of Transportation Statistics, U.S. Department of Transportation AASHTO LIAISON Gummada Murthy, Associate Program Director, Operations CANADA LIAISON Andrew Beal, Manager, Traffic Office, Highway Standards Branch, Ontario Ministry of Transportation * Membership as of July 2014.

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TRB’s second Strategic Highway Research Program (SHRP 2) Report S2-L08-RW-1: Incorporation of Travel Time Reliability into the Highway Capacity Manual presents a summary of the work conducted during the development of two proposed new chapters for the Highway Capacity Manual 2010 (HCM2010). These chapters demonstrated how to apply travel time reliability methods to the analysis of freeways and urban streets.

The two proposed HCM chapters, numbers 36 and 37, introduce the concept of travel time reliability and offer new analytic methods. The prospective Chapter 36 for HCM2010 concerns freeway facilities and urban streets, and the prospective supplemental Chapter 37 elaborates on the methodologies and provides an example calculation. The chapters are proposed; they have not yet been accepted by TRB's Highway Capacity and Quality of Service (HCQS) Committee. The HCQS Committee has responsibility for approving the content of HCM2010.

SHRP 2 Reliability Project L08 has also released the FREEVAL and STREETVAL computational engines. The FREEVAL-RL computational engine employs a scenario generator that feeds the Freeway Highway Capacity Analysis methodology in order to generate a travel time distribution from which reliability metrics can be derived. The STREETVAL-RL computational engine employs a scenario generator that feeds the Urban Streets Highway Capacity Analysis methodology in order to generate a travel time distribution from which reliability metrics can be derived.

Software Disclaimer: This software is offered as is, without warranty or promise of support of any kind either expressed or implied. Under no circumstance will the National Academy of Sciences or the Transportation Research Board (collectively "TRB") be liable for any loss or damage caused by the installation or operation of this product. TRB makes no representation or warranty of any kind, expressed or implied, in fact or in law, including without limitation, the warranty of merchantability or the warranty of fitness for a particular purpose, and shall not in any case be liable for any consequential or special damages.

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