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.
Truck Size and Weight Limits Research Plan Committee A Consensus Study Report of Research to Support Evaluation of Truck Size and Weight Regulations TRanSpoRTaTion RESEaRch boaRd SpEcial REpoRT 328
Transportation Research Board Special Report 328 Subscriber Categories Freight transportation; motor carriers; planning and forecasting; policy; research Transportation Research Board (TRB) publications are available by ordering indiÂ vidual publications directly from the TRB Business Office, through the Internet at www.TRB.org or nationalacademies.org/trb, or by annual subscription through organizational or individual affiliation with TRB. Affiliates and library subscribers are eligible for substantial discounts. For further information, contact the TransÂ portation Research Board Business Office, 500 Fifth Street, NW, Washington, DC 20001 (telephone 202Â334Â3213; fax 202Â334Â2519; or eÂmail TRBsales@nas.edu). Copyright 2019 by the National Academy of Sciences. All rights reserved. Printed in the United States of America This publication was reviewed by a group other than the authors according to the procedures approved by a Report Review Committee consisting of members of the National Academy of Sciences, the National Academy of Engineering, and the National Academy of Medicine. This study was sponsored by the Federal Highway Administration of the U.S. DeÂ partment of Transportation. International Standard Book NumberÂ13: 978Â0Â309Â48704Â7 International Standard Book NumberÂ10: 0Â309Â48704Â8 Digital Object Identifier: https://doi.org/10.17226/25321 Library of Congress Control Number: 2019933453
The National Academy of Sciences was established in 1863 by an Act of Congress, signed by President Lincoln, as a private, nongovernmental institu- tion 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 con- tributions to engineering. Dr. C. D. Mote, Jr., 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 increase the benefits that transportation contributes to society by providing leadership in transportation innovation and progress through research and information exchange, conducted within a setting that is objective, interdisciplinary, and multimodal. The Boardâs varied activi- ties annually engage about 7,000 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.
Consensus Study Reports published by the National Academies of Sciences, Engineering, and Medicine document the evidence-based consensus on the studyâs statement of task by an authoring committee of experts. Reports typi- cally include findings, conclusions, and recommendations based on information gathered by the committee and the committeeâs deliberations. Each report has been subjected to a rigorous and independent peer-review process and it represents the position of the National Academies on the statement of task. Proceedings published by the National Academies of Sciences, Engineering, and Medicine chronicle the presentations and discussions at a workshop, symposium, or other event convened by the National Academies. The statements and opin- ions contained in proceedings are those of the participants and are not endorsed by other participants, the planning committee, or the National Academies. For information about other products and activities of the National Academies, please visit www.nationalacademies.org/about/whatwedo.
v TRUCK SIZE AND WEIGHT LIMITS RESEARCH PLAN COMMITTEE James Winebrake, Rochester Institute of Technology, Rochester, New York, Chair Imad L. Al-Qadi, University of Illinois at UrbanaÂChampaign Gongkang Fu, Illinois Institute of Technology, Chicago David L. Harkey, Insurance Institute for Highway Safety, Arlington, Virginia Douglas W. Harwood, MRI Global, Kansas City, Missouri Susan E. Hida, California Department of Transportation, Sacramento JosÃ© HolguÃn-Veras, Rensselaer Polytechnic Institute, Troy, New York Clinton V. Oster, Jr., Indiana University, Troy, Montana Michael Tooley, Montana Department of Transportation, Helena Dennis F. Wilkie (NAE), Birmingham, Michigan Sharon L. Wood (NAE), The University of Texas at Austin Transportation Research Board Staff Joseph R. Morris, Study Director Thomas R. Menzies, Jr., Director of Consensus and Advisory Studies Anusha Jayasinghe, Senior Program Assistant
vii Preface The Transportation Research Board formed the Truck Size and Weight Limits Research Plan Committee to specify a program of research to reduce uncertainties in estimates of the effects of changes in the regulations that limit the sizes and weights of trucks. The study was sponsored by the FedÂ eral Highway Administration (FHWA), U.S. Department of Transportation. The committee included members with expertise in highway safety research, bridge and pavement engineering, automotive engineering, highÂ way administration, law enforcement, and transportation economics. As part of its study, it organized a series of public webinars at which invited experts offered comments on research priorities and methods in the areas of pavement and bridge engineering, highway safety, highway regulatory enforcement, and freight transportation modeling. The webinar participants are listed in Appendix B. In addition, the committee heard presentations at its meetings from Chandra Bondzie, Gene McHale, Thomas Saad, and Robert Zobel, FHWA; John Gray, Association of American Railroads; and Mark Burton, University of Tennessee. This report was reviewed in draft form by individuals chosen for their diverse perspectives and technical expertise. The purpose of this indepenÂ dent review is to provide candid and critical comments that will assist the National Academies in making each published report as sound as possible and to ensure that it meets the institutional standards for quality, objecÂ tivity, evidence, and responsiveness to the study charge. The review comÂ ments and draft manuscript remain confidential to protect the integrity of the deliberative process. The committee thanks the following individuals
viii PREFACE for their review of this report: Michael Belzer, Wayne State University, Detroit, Michigan; Judith CorleyÂLay, Michigan State University, Lansing; Lidia Kostyniuk, University of Michigan, Ann Arbor; Gerald McCullough, University of Minnesota, St. Paul; Hani Nassif, Rutgers, The State UniverÂ sity of New Jersey, Piscataway; Jonathan Regehr, University of Manitoba, Winnipeg; and Bernard Robertson, BIR1, LLC, Bloomfield Hills, Michigan. Although the reviewers listed above provided many constructive comÂ ments and suggestions, they were not asked to endorse the conclusions or recommendations of this report, nor did they see the final draft before its release. The review of this report was overseen by Chris T. Hendrickson (National Academy of Engineering), Carnegie Mellon University (emeriÂ tus), Pittsburgh, Pennsylvania; and Susan Hanson (National Academy of Sciences), Clark University (emerita), Worcester, Massachusetts. They were responsible for making certain that an independent examination of this report was carried out in accordance with the standards of the National Academies and that all review comments were carefully considered. Responsibility for the final content rests entirely with the authoring comÂ mittee and the National Academies. Joseph R. Morris managed the study, edited the report, and drafted sections of the report under the guidance of the committee and the supervision of Thomas R. Menzies, Jr., Director, Consensus and Advisory Studies Division. Stephanie Seki prepared literaÂ ture reviews in support of the committee. Karen Febey managed the report review process. Anusha Jayasinghe and Amelia Mathis assisted with meetÂ ing arrangements and communications with committee members.
ix Contents Summary 1 1 Introduction 5 Sources for the Roadmap, 8 Structure of Truck Size and Weight Limit Studies, 9 Outline of the Report, 13 2 Summary of the Roadmap 15 Problem Statements, 15 Research Cost, Duration, and Sequencing, 17 Priorities, 18 Core Research Tracks, 18 3 Conclusions 31 Value of Research on Truck Size and Weight Regulations, 31 Limitations of Impact Projections, 32 Value of Broadly Applicable Research, 32 Importance of General Purpose Data Programs, 33 Need to Match Research to Policy Objectives, 34 Value of Tests and Trials in Evaluations of Truck Size and Weight Limits, 34 Emerging Technologies and Truck Size and Weight Regulations, 35 Organizational Needs and Options, 36
x CONTENTS References 39 Appendixes A Research Problem Statements 47 Pavement Research, 47 Bridge Research, 58 Safety Research, 85 Enforcement Research, 107 Mode and Vehicle Choice and Freight Market Research, 120 CrossÂCutting Topics; Evaluation of Regulatory Options, 133 B Webinar Participants 147 Study Committee Biographical Information 149