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VOLUME 17
NATIONAL
NCHRP REPORT 500
COOPERATIVE
HIGHWAY
RESEARCH
PROGRAM
Guidance for Implementation of the
AASHTO Strategic Highway Safety Plan
Volume 17: A Guide for
Reducing Work Zone Collisions
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TRANSPORTATION RESEARCH BOARD EXECUTIVE COMMITTEE 2005 (Membership as of November 2005)
OFFICERS
Chair: John R. Njord, Executive Director, Utah DOT
Vice Chair: Michael D. Meyer, Professor, School of Civil and Environmental Engineering, Georgia Institute of Technology
Executive Director: Robert E. Skinner, Jr., Transportation Research Board
MEMBERS
MICHAEL W. BEHRENS, Executive Director, Texas DOT
ALLEN D. BIEHLER, Secretary, Pennsylvania DOT
LARRY L. BROWN, SR., Executive Director, Mississippi DOT
DEBORAH H. BUTLER, Vice President, Customer Service, Norfolk Southern Corporation and Subsidiaries, Atlanta, GA
ANNE P. CANBY, President, Surface Transportation Policy Project, Washington, DC
JOHN L. CRAIG, Director, Nebraska Department of Roads
DOUGLAS G. DUNCAN, President and CEO, FedEx Freight, Memphis, TN
NICHOLAS J. GARBER, Professor of Civil Engineering, University of Virginia, Charlottesville
ANGELA GITTENS, Vice President, Airport Business Services, HNTB Corporation, Miami, FL
GENEVIEVE GIULIANO, Director, Metrans Transportation Center, and Professor, School of Policy, Planning, and Development,
USC, Los Angeles
BERNARD S. GROSECLOSE, JR., President and CEO, South Carolina State Ports Authority
SUSAN HANSON, Landry University Professor of Geography, Graduate School of Geography, Clark University
JAMES R. HERTWIG, President, CSX Intermodal, Jacksonville, FL
GLORIA JEAN JEFF, Director, Michigan DOT
ADIB K. KANAFANI, Cahill Professor of Civil Engineering, University of California, Berkeley
HERBERT S. LEVINSON, Principal, Herbert S. Levinson Transportation Consultant, New Haven, CT
SUE MCNEIL, Professor, Department of Civil and Environmental Engineering, University of Delaware, Newark
MICHAEL R. MORRIS, Director of Transportation, North Central Texas Council of Governments
CAROL A. MURRAY, Commissioner, New Hampshire DOT
MICHAEL S. TOWNES, President and CEO, Hampton Roads Transit, Hampton, VA
C. MICHAEL WALTON, Ernest H. Cockrell Centennial Chair in Engineering, University of Texas, Austin
LINDA S. WATSON, Executive Director, LYNX--Central Florida Regional Transportation Authority
MARION C. BLAKEY, Federal Aviation Administrator, U.S.DOT (ex officio)
JOSEPH H. BOARDMAN, Federal Railroad Administrator, U.S.DOT (ex officio)
REBECCA M. BREWSTER, President and COO, American Transportation Research Institute, Smyrna, GA (ex officio)
GEORGE BUGLIARELLO, Chancellor, Polytechnic University, and Foreign Secretary, National Academy of Engineering (ex officio)
J. RICHARD CAPKA, Acting Administrator, Federal Highway Administration, U.S.DOT (ex officio)
THOMAS H. COLLINS (Adm., U.S. Coast Guard), Commandant, U.S. Coast Guard (ex officio)
JAMES J. EBERHARDT, Chief Scientist, Office of FreedomCAR and Vehicle Technologies, U.S. Department of Energy (ex officio)
JACQUELINE GLASSMAN, Deputy Administrator, National Highway Traffic Safety Administration, U.S.DOT (ex officio)
EDWARD R. HAMBERGER, President and CEO, Association of American Railroads (ex officio)
DAVID B. HORNER, Acting Deputy Administrator, Federal Transit Administration, U.S.DOT (ex officio)
JOHN C. HORSLEY, Executive Director, American Association of State Highway and Transportation Officials (ex officio)
JOHN E. JAMIAN, Acting Administrator, Maritime Administration, U.S.DOT (ex officio)
EDWARD JOHNSON, Director, Applied Science Directorate, National Aeronautics and Space Administration (ex officio)
ASHOK G. KAVEESHWAR, Research and Innovative Technology Administrator, U.S.DOT (ex officio)
BRIGHAM MCCOWN, Deputy Administrator, Pipeline and Hazardous Materials Safety Administration, U.S.DOT (ex officio)
WILLIAM W. MILLAR, President, American Public Transportation Association (ex officio)
SUZANNE RUDZINSKI, Director, Transportation and Regional Programs, U.S. Environmental Protection Agency (ex officio)
ANNETTE M. SANDBERG, Federal Motor Carrier Safety Administrator, U.S.DOT (ex officio)
JEFFREY N. SHANE, Under Secretary for Policy, U.S.DOT (ex officio)
CARL A. STROCK (Maj. Gen., U.S. Army), Chief of Engineers and Commanding General, U.S. Army Corps of Engineers (ex officio)
NATIONAL COOPERATIVE HIGHWAY RESEARCH PROGRAM
Transportation Research Board Executive Committee Subcommittee for NCHRP
JOHN R. NJORD, Utah DOT (Chair) MICHAEL D. MEYER, Georgia Institute of Technology
J. RICHARD CAPKA, Federal Highway Administration ROBERT E. SKINNER, JR., Transportation Research Board
JOHN C. HORSLEY, American Association of State Highway MICHAEL S. TOWNES, Hampton Roads Transit, Hampton, VA
and Transportation Officials C. MICHAEL WALTON, University of Texas, Austin
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NATIONAL COOPERATIVE HIGHWAY RESEARCH PROGRAM
NCHRP REPORT 500
Guidance for Implementation of the
AASHTO Strategic Highway Safety Plan
Volume 17: A Guide for
Reducing Work Zone Collisions
NICHOLAS D. ANTONUCCI
KELLY K. HARDY
CH2M HILL
Herndon, VA
JAMES E. BRYDEN
Highway Safety Engineer
Delmar, NY
TIMOTHY R. NEUMAN
CH2M HILL
Chicago, IL
RONALD PFEFER
Zikhron Yaacov, Israel
KEVIN SLACK
CH2M HILL
Herndon, VA
S UBJECT A REAS
Safety and Human Performance
Research Sponsored by the American Association of State Highway and Transportation Officials
in Cooperation with the Federal Highway Administration
TRANSPORTATION RESEARCH BOARD
WASHINGTON, D.C.
2005
www.TRB.org
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NATIONAL COOPERATIVE HIGHWAY RESEARCH NCHRP REPORT 500: Volume 17
PROGRAM
Systematic, well-designed research provides the most effective Project G17-18(3)
approach to the solution of many problems facing highway
administrators and engineers. Often, highway problems are of local ISSN 0077-5614
interest and can best be studied by highway departments ISBN 0-309-08847-X
individually or in cooperation with their state universities and
Library of Congress Control Number 2005937466
others. However, the accelerating growth of highway transportation
develops increasingly complex problems of wide interest to © 2005 Transportation Research Board
highway authorities. These problems are best studied through a
coordinated program of cooperative research. Price $28.00
In recognition of these needs, the highway administrators of the
American Association of State Highway and Transportation
Officials initiated in 1962 an objective national highway research
program employing modern scientific techniques. This program is
supported on a continuing basis by funds from participating
member states of the Association and it receives the full cooperation
and support of the Federal Highway Administration, United States NOTICE
Department of Transportation.
The project that is the subject of this report was a part of the National Cooperative
The Transportation Research Board of the National Academies
Highway Research Program conducted by the Transportation Research Board with the
was requested by the Association to administer the research
approval of the Governing Board of the National Research Council. Such approval
program because of the Board's recognized objectivity and reflects the Governing Board's judgment that the program concerned is of national
understanding of modern research practices. The Board is uniquely importance and appropriate with respect to both the purposes and resources of the
suited for this purpose as it maintains an extensive committee National Research Council.
structure from which authorities on any highway transportation
The members of the technical committee selected to monitor this project and to review
subject may be drawn; it possesses avenues of communications and
this report were chosen for recognized scholarly competence and with due
cooperation with federal, state and local governmental agencies, consideration for the balance of disciplines appropriate to the project. The opinions and
universities, and industry; its relationship to the National Research conclusions expressed or implied are those of the research agency that performed the
Council is an insurance of objectivity; it maintains a full-time research, and, while they have been accepted as appropriate by the technical committee,
research correlation staff of specialists in highway transportation they are not necessarily those of the Transportation Research Board, the National
matters to bring the findings of research directly to those who are in Research Council, the American Association of State Highway and Transportation
a position to use them. Officials, or the Federal Highway Administration, U.S. Department of Transportation.
The program is developed on the basis of research needs Each report is reviewed and accepted for publication by the technical committee
identified by chief administrators of the highway and transportation according to procedures established and monitored by the Transportation Research
departments and by committees of AASHTO. Each year, specific Board Executive Committee and the Governing Board of the National Research
areas of research needs to be included in the program are proposed Council.
to the National Research Council and the Board by the American
Association of State Highway and Transportation Officials.
Research projects to fulfill these needs are defined by the Board, and
qualified research agencies are selected from those that have
submitted proposals. Administration and surveillance of research
contracts are the responsibilities of the National Research Council
and the Transportation Research Board. Published reports of the
The needs for highway research are many, and the National NATIONAL COOPERATIVE HIGHWAY RESEARCH PROGRAM
Cooperative Highway Research Program can make significant
contributions to the solution of highway transportation problems of are available from:
mutual concern to many responsible groups. The program,
Transportation Research Board
however, is intended to complement rather than to substitute for or
Business Office
duplicate other highway research programs.
500 Fifth Street, NW
Washington, DC 20001
and can be ordered through the Internet at:
Note: The Transportation Research Board of the National Academies, the
National Research Council, the Federal Highway Administration, the American
Association of State Highway and Transportation Officials, and the individual
http://www.national-academies.org/trb/bookstore
states participating in the National Cooperative Highway Research Program do
not endorse products or manufacturers. Trade or manufacturers' names appear
herein solely because they are considered essential to the object of this report. Printed in the United States of America
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The National Academy of Sciences is a private, nonprofit, self-perpetuating society of distinguished schol-
ars engaged in scientific and engineering research, dedicated to the furtherance of science and technology
and to their use for the general welfare. On the authority of the charter granted to it by the Congress in
1863, the Academy has a mandate that requires it to advise the federal government on scientific and techni-
cal matters. Dr. Ralph J. Cicerone is president of the National Academy of Sciences.
The National Academy of Engineering was established in 1964, under the charter of the National Acad-
emy of Sciences, as a parallel organization of outstanding engineers. It is autonomous in its administration
and in the selection of its members, sharing with the National Academy of Sciences the responsibility for
advising the federal government. The National Academy of Engineering also sponsors engineering programs
aimed at meeting national needs, encourages education and research, and recognizes the superior achieve-
ments of engineers. Dr. William A. Wulf is president of the National Academy of Engineering.
The Institute of Medicine was established in 1970 by the National Academy of Sciences to secure the
services of eminent members of appropriate professions in the examination of policy matters pertaining
to the health of the public. The Institute acts under the responsibility given to the National Academy of
Sciences by its congressional charter to be an adviser to the federal government and, on its own initiative,
to identify issues of medical care, research, and education. Dr. Harvey V. Fineberg is president of the
Institute of Medicine.
The National Research Council was organized by the National Academy of Sciences in 1916 to associate
the broad community of science and technology with the Academy's purposes of furthering knowledge and
advising the federal government. Functioning in accordance with general policies determined by the Acad-
emy, the Council has become the principal operating agency of both the National Academy of Sciences
and the National Academy of Engineering in providing services to the government, the public, and the
scientific and engineering communities. The Council is administered jointly by both the Academies and
the Institute of Medicine. Dr. Ralph J. Cicerone and Dr. William A. Wulf are chair and vice chair,
respectively, of the National Research Council.
The Transportation Research Board is a division of the National Research Council, which serves the
National Academy of Sciences and the National Academy of Engineering. The Board's mission is to promote
innovation and progress in transportation through research. In an objective and interdisciplinary setting,
the Board facilitates the sharing of information on transportation practice and policy by researchers and
practitioners; stimulates research and offers research management services that promote technical
excellence; provides expert advice on transportation policy and programs; and disseminates research
results broadly and encourages their implementation. The Board's varied activities annually engage more
than 5,000 engineers, scientists, and other transportation researchers and practitioners from the public and
private sectors and academia, all of whom contribute their expertise in the public interest. The program is
supported by state transportation departments, federal agencies including the component administrations of
the U.S. Department of Transportation, and other organizations and individuals interested in the
development of transportation. www.TRB.org
www.national-academies.org
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COOPERATIVE RESEARCH PROGRAMS STAFF FOR NCHRP REPORT 500, VOLUME 17
ROBERT J. REILLY, Director, Cooperative Research Programs
CRAWFORD F. JENCKS, NCHRP Manager
CHARLES W. NIESSNER, Senior Program Officer
EILEEN P. DELANEY, Director of Publications
BETH HATCH, Editor
NCHRP PROJECT G17-18(3) PANEL
Field of Traffic--Area of Safety
THOMAS E. BRYER, Camp Hill, PA (Chair)
JASVINDERJIT "JESSE" BHULLAR, California DOT
TROY COSTALES, Oregon DOT
LEANNA DEPUE, Missouri DOT
BARBARA HARSHA, Governors Highway Safety Association, Washington, DC
BRUCE IBARGUEN, Maine DOT
MARLENE MARKISON, NHTSA
MARGARET "MEG" MOORE, Texas DOT
KIM F. NYSTROM, Nystrom Consulting, Gold River, CA
PETER F. "PETE" RUSCH, FHWA
RUDY UMBS, FHWA
THOMAS M. WELCH, Iowa DOT
ANTHONY D. WYATT, North Carolina DOT
JESSE BLATT, NHTSA Liaison
RAY KRAMMES, FHWA Liaison
KEN KOBETSKY, AASHTO Liaison
RICHARD PAIN, TRB Liaison
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The goal of the AASHTO Strategic Highway Safety Plan is to reduce annual high-
FOREWORD way fatalities to 1.0 fatality per 100 million vehicle-miles of travel. This goal can be
By Charles W. Niessner achieved through the widespread application of low-cost, proven countermeasures that
Staff Officer reduce the number of crashes on the nation's highways. This seventeenth volume of
Transportation Research NCHRP Report 500: Guidance for Implementation of the AASHTO Strategic Highway
Board Safety Plan provides strategies that can be employed to reduce work zone crashes. The
report will be of particular interest to safety practitioners with responsibility for imple-
menting programs to reduce injuries and fatalities on the highway system.
In 1998, AASHTO approved its Strategic Highway Safety Plan, which was devel-
oped by the AASHTO Standing Committee for Highway Traffic Safety with the assis-
tance of the Federal Highway Administration, the National Highway Traffic Safety
Administration, and the Transportation Research Board Committee on Transportation
Safety Management. The plan includes strategies in 22 key emphasis areas that affect
highway safety. The plan's goal is to reduce the annual number of highway deaths by
9,000 by 2008. Each of the 22 emphasis areas includes strategies and an outline of what
is needed to implement each strategy.
NCHRP Project 17-18(3) is developing a series of guides to assist state and local
agencies in reducing injuries and fatalities in targeted areas. The guides correspond to
the emphasis areas outlined in the AASHTO Strategic Highway Safety Plan. Each
guide includes a brief introduction, a general description of the problem, the strate-
gies/countermeasures to address the problem, and a model implementation process.
This is the seventeenth volume of NCHRP Report 500: Guidance for Implemen-
tation of the AASHTO Strategic Highway Safety Plan, a series in which relevant infor-
mation is assembled into single concise volumes, each pertaining to specific types of
highway crashes (e.g., run-off-the-road and head-on) or contributing factors (e.g.,
aggressive driving). An expanded version of each volume with additional reference
material and links to other information sources is available on the AASHTO Web site
at http://safety.transportation.org. Future volumes of the report will be published and
linked to the Web site as they are completed.
While each volume includes countermeasures for dealing with particular crash
emphasis areas, NCHRP Report 501: Integrated Management Process to Reduce High-
way Injuries and Fatalities Statewide provides an overall framework for coordinating
a safety program. The integrated management process comprises the necessary steps
for advancing from crash data to integrated action plans. The process includes method-
ologies to aid the practitioner in problem identification, resource optimization, and per-
formance measurements. Together, the management process and the guides provide a
comprehensive set of tools for managing a coordinated highway safety program.
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Contents
Acknowledgments
I Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-1
General Description of the Problem. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-1
Objectives of the Emphasis Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-3
II Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . II-1
III Type of Problem Being Addressed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . III-1
General Description of the Problem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . III-1
Specific Attributes of the Problem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . III-3
Key References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . III-5
IV Index of Strategies by Implementation Timeframe and Relative Cost . . . . . . . . . . . IV-1
V Description of Strategies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V-1
Objectives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V-1
Types of Strategies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V-3
Related Strategies for Creating a Truly Comprehensive Approach . . . . . . . . . . . . . . . . V-4
Objective 19.1 A--Reduce the Number, Duration, and Impact of Work Zones . . . . . . V-6
Objective 19.1 B--Improve Work Zone Traffic Control Devices . . . . . . . . . . . . . . . . . . V-41
Objective 19.1 C--Improve Work Zone Design Practices . . . . . . . . . . . . . . . . . . . . . . . . V-67
Objective 19.1 D--Improve Driver Compliance with Work Zone Traffic Controls. . . V-79
Objective 19.1 E--Increase Knowledge and Awareness of Work Zones . . . . . . . . . . . V-96
Objective 19.1 F--Develop Procedures to Effectively Manage Work Zones . . . . . . . V-109
VI Guidance for Implementation of the AASHTO Strategic Highway Safety Plan . . VI-1
Outline for a Model Implementation Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VI-1
Purpose of the Model Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VI-2
Overview of the Model Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VI-2
Implementation Step 1: Identify and Define the Problem . . . . . . . . . . . . . . . . . . . . . . . . VI-5
Implementation Step 2: Recruit Appropriate Participants for the Program . . . . . . . . . VI-9
Implementation Step 3: Establish Crash Reduction Goals . . . . . . . . . . . . . . . . . . . . . . VI-11
Implementation Step 4: Develop Program Policies, Guidelines, and
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VI-12
Implementation Step 5: Develop Alternative Approaches to Addressing the
Problem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VI-13
Implementation Step 6: Evaluate Alternatives and Select a Plan . . . . . . . . . . . . . . . . . VI-15
Implementation Step 7: Submit Recommendations for Action by Top
Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VI-17
Implementation Step 8: Develop a Plan of Action . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VI-18
Implementation Step 9: Establish Foundations for Implementing the Program . . . . VI-20
Implementation Step 10: Carry Out the Action Plan . . . . . . . . . . . . . . . . . . . . . . . . . . . VI-21
Implementation Step 11: Assess and Transition the Program . . . . . . . . . . . . . . . . . . . VI-22
VII Key References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VII-1
Appendixes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
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Acknowledgments
This volume of NCHRP Report 500 was developed under NCHRP Project 17-18(3), the
product of which is a series of implementation guides addressing the emphasis areas of
AASHTO's Strategic Highway Safety Plan. The project was managed by CH2M HILL, and
the co-principal investigators were Kevin Slack of CH2M HILL and Ron Pfefer. Timothy
Neuman of CH2M HILL served as the overall project director for the team. Kelly Hardy,
also of CH2M HILL, served as a technical specialist on the development of the guides.
The project team was organized around the specialized technical content contained in each
guide, and the overall team included nationally recognized experts from many organizations.
The following team of experts, selected on the basis of their knowledge of work zones, served
as lead authors for the work zone guide:
· Nicholas D. Antonucci
CH2M HILL
· Kelly K. Hardy
CH2M HILL
· James E. Bryden
Highway Safety Engineer
Development of the volumes of NCHRP Report 500 used the resources and expertise of many
professionals from around the country and overseas. Through research, workshops, and actual
demonstration of the guides by agencies, the resulting documents represent best practices in
each emphasis area. The project team is grateful to the following list of people and their agen-
cies for supporting the project by providing material, participating in workshops and meetings,
and providing input and comments during the development of the work zone guide:
Broward County, Florida Missouri Department of Texas Transportation
Lee Billingsley Transportation Institute
Ronald Morris Gerald Ullman
Deja Program Development Scott Stotlemeyer
Larry Christensen Virginia Department of
Ohio Department of Transportation
Federal Highway Transportation Reginald Moseley
Administration Dave Holstein
Karen Croysdale Virginia Transportation
Kerry Perrillo Oregon Department of Research Council
Mike Robinson Transportation Michael Fontaine
Tracy Scriba Anne Holder
Wilbur Smith Associates
Georgia Department of South Carolina Department Wilma Magyar
Transportation of Transportation
Norm Cressman John Gaither Wisconsin Department of
Transportation
Thomas Notbohm
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ACKNOWLEDGMENTS
The authors would also like to thank the following people for their input and assistance in the
development of this guide:
· Raghavan Srinivasan, University of North Carolina Highway Safety Research Center
· Kavita Boddu, CH2M HILL
· Taylor Fleet, CH2M HILL
· Mary Gute, CH2M HILL
· Tim Page, CH2M HILL
