National Academies Press: OpenBook
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Suggested Citation:"FRONT MATTER." National Academies of Sciences, Engineering, and Medicine. 2021. Development of a Posted Speed Limit Setting Procedure and Tool. Washington, DC: The National Academies Press. doi: 10.17226/26200.
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Page 1
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Suggested Citation:"FRONT MATTER." National Academies of Sciences, Engineering, and Medicine. 2021. Development of a Posted Speed Limit Setting Procedure and Tool. Washington, DC: The National Academies Press. doi: 10.17226/26200.
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Page 2
Page 3
Suggested Citation:"FRONT MATTER." National Academies of Sciences, Engineering, and Medicine. 2021. Development of a Posted Speed Limit Setting Procedure and Tool. Washington, DC: The National Academies Press. doi: 10.17226/26200.
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Below is the uncorrected machine-read text of this chapter, intended to provide our own search engines and external engines with highly rich, chapter-representative searchable text of each book. Because it is UNCORRECTED material, please consider the following text as a useful but insufficient proxy for the authoritative book pages.

NCHRP Web-Only Document 291: Development of a Posted Speed Limit Setting Procedure and Tool Kay Fitzpatrick Subasish Das Michael P. Pratt Karen Dixon Texas A&M Transportation Institute College Station, TX Tim Gates Michigan State University East Lansing, MI Contractor’s Final Report for NCHRP Project 17-76 Submitted March 2021 NATIONAL COOPERATIVE HIGHWAY RESEARCH PROGRAM Systematic, well-designed, and implementable research is the most effective way to solve many problems facing state departments of transportation (DOTs) administrators and engineers. Often, highway problems are of local or regional interest and can best be studied by state DOTs individually or in cooperation with their state universities and others. However, the accelerating growth of highway transportation results in increasingly complex problems of wide interest to highway authorities. These problems are best studied through a coordinated program of cooperative research. Recognizing this need, the leadership of the American Association of State Highway and Transportation Officials (AASHTO) in 1962 initiated an objective national highway research program using modern scientific techniques—the National Cooperative Highway Research Program (NCHRP). NCHRP is supported on a continuing basis by funds from participating member states of AASHTO and receives the full cooperation and support of the Federal Highway Administration (FHWA), United States Department of Transportation, under Agreement No. 693JJ31950003. COPYRIGHT INFORMATION Authors herein are responsible for the authenticity of their materials and for obtaining written permissions from publishers or persons who own the copyright to any previously published or copyrighted material used herein. Cooperative Research Programs (CRP) grants permission to reproduce material in this publication for classroom and not-for-profit purposes. Permission is given with the understanding that none of the material will be used to imply TRB, AASHTO, FAA, FHWA, FTA, GHSA, NHTSA, or TDC endorsement of a particular product, method, or practice. It is expected that those reproducing the material in this document for educational and not-for-profit uses will give appropriate acknowledgment of the source of any reprinted or reproduced material. For other uses of the material, request permission from CRP. DISCLAIMER The opinions and conclusions expressed or implied in this report are those of the researchers who performed the research. They are not necessarily those of the Transportation Research Board; the National Academies of Sciences, Engineering, and Medicine; the FHWA; or the program sponsors. The information contained in this document was taken directly from the submission of the author(s). This material has not been edited by TRB.

The National Academy of Sciences was established in 1863 by an Act of Congress, signed by President Lincoln, as a private, non- governmental institution to advise the nation on issues related to science and technology. Members are elected by their peers for outstanding contributions to research. Dr. Marcia McNutt is president. The National Academy of Engineering was established in 1964 under the charter of the National Academy of Sciences to bring the practices of engineering to advising the nation. Members are elected by their peers for extraordinary contributions to engineering. Dr. John L. Anderson is president. The National Academy of Medicine (formerly the Institute of Medicine) was established in 1970 under the charter of the National Academy of Sciences to advise the nation on medical and health issues. Members are elected by their peers for distinguished contributions to medicine and health. Dr. Victor J. Dzau is president. The three Academies work together as the National Academies of Sciences, Engineering, and Medicine to provide independent, objective analysis and advice to the nation and conduct other activities to solve complex problems and inform public policy decisions. The National Academies also encourage education and research, recognize outstanding contributions to knowledge, and increase public understanding in matters of science, engineering, and medicine. Learn more about the National Academies of Sciences, Engineering, and Medicine at www.nationalacademies.org. The Transportation Research Board is one of seven major programs of the National Academies of Sciences, Engineering, and Medicine. The mission of the Transportation Research Board is to provide leadership in transportation improvements and innovation through trusted, timely, impartial, and evidence-based information exchange, research, and advice regarding all modes of transportation. The Board’s varied activities annually engage about 8,000 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. Learn more about the Transportation Research Board at www.TRB.org.

C O O P E R A T I V E  R E S E A R C H  P R O G R A M S  CRP STAFF FOR NCHRP WEB-ONLY DOCUMENT 291 Christopher J. Hedges, Director, Cooperative Research Programs Lori L. Sundstrom, Deputy Director, Cooperative Research Programs David Jared, Senior Program Officer Clara Schmetter, Senior Program Assistant Eileen P. Delaney, Director of Publications Natalie Barnes, Associate Director of Publications Scott E. Hitchcock, Senior Editor Kathleen Mion, Senior Editorial Assistant NCHRP PROJECT 17-76 PANEL Field of Traffic—Area of Safety Peter D. Buchen, Minnesota Department of Transportation, Roseville, MN (Chair) John E. Fisher, City of Culver City, South Pasadena, CA Kevin J. Haas, Oregon Department of Transportation, Salem, OR Thomas Hicks, Brudis Associates, Towson, MD Michelle Nickerson, Tennessee Department of Transportation, Nashville, TN Robert J. Pento, Pennsylvania Department of Transportation, Harrisburg, PA Steven Cole Strength, Louisiana Department of Transportation and Development, Baton Rouge, LA William C. Taylor, Michigan State University, East Lansing, MI Michael Matzke, FHWA Liaison Bernardo B. Kleiner, TRB Liaison Author Acknowledgments The research reported herein was performed under National Cooperative Highway Research Program Project 17-76 by the Texas A&M Transportation Institute (TTI), which is a member of The Texas A&M University System, and Michigan State University (MSU). Kay Fitzpatrick, TTI senior research engineer, was the principal investigator. The authors of this report are: Kay Fitzpatrick (TTI). Subasish Das (TTI). Timothy J. Gates (MSU). Eun Sug Park (TTI). Michael P. Pratt (TTI). Karen Dixon (TTI). Jonathan Kay (MSU). Meghna Chakraborty (MSU). The work was performed under the general supervision of Dr. Fitzpatrick. The research reported here was supported by several staff members at TTI (Colleen Dau, Matthew Foley, Joene Gieguy Konan, Marc Laplante, Tomas Lindheimer, Christopher Lira, Chaolun Ma, Mohammada Moghadasi, Sadia Najneen, Marcelina Perez, Maria Rodriguez, Aaron Trevizo, and Umme Zakiraand) and MSU. The authors wish to acknowledge the many experts who contributed to this research by participating in discussions on posted speed limits and providing comments during presentations and early drafts. The authors appreciate the time and effort of these individuals.

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Several types of speed limits exist, including statutory speed limit, posted speed limit, school zone speed limit, work zone speed limit, variable speed limit, and advisory speed.

The TRB National Cooperative Highway Research Program's NCHRP Web-Only Document 291: Development of a Posted Speed Limit Setting Procedure and Tool documents the research efforts and findings from an NCHRP Project 17-76 to identify factors that influence a driver’s operating speed and the development of a Speed Limit Setting Procedure and Tool.

The document is supplemental to NCHRP Research Report 966: Posted Speed Limit Setting Procedure and Tool: User Guide.

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