Page i
Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2024. Tackling the Road Safety Crisis: Saving Lives Through Research and Action. Washington, DC: The National Academies Press. doi: 10.17226/27804.

logo

Tackling the Road
Safety Crisis

Saving Lives Through Research and Action

______

Committee on Transitioning Evidence-Based
Road Safety Research into Practice

Consensus and Advisory Studies Division

Transportation Research Board

Consensus Study Report

Page ii
Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2024. Tackling the Road Safety Crisis: Saving Lives Through Research and Action. Washington, DC: The National Academies Press. doi: 10.17226/27804.

Transportation Research Board Special Report 354

Subscriber Categories: Highways; operations and management; safety and human factors

Transportation Research Board publications are available by ordering individual publications through the internet at nap.nationalacademies.org 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 Transportation Research Board Business Office, 500 Fifth Street, NW, Washington, DC 20001 (telephone 202-334-3213; fax 202-334-2519; or email TRBsales@nas.edu).

Copyright 2024 by the National Academy of Sciences. National Academies of Sciences, Engineering, and Medicine and National Academies Press and the graphical logos for each are all trademarks of 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 U.S. Department of Transportation.

International Standard Book Number-13: 978-0-309-72094-6
International Standard Book Number-10: 0-309-72094-X
Digital Object Identifier: http://doi.org/10.17226/27804

Page iii
Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2024. Tackling the Road Safety Crisis: Saving Lives Through Research and Action. Washington, DC: The National Academies Press. doi: 10.17226/27804.

The National Academy of Sciences was established in 1863 by an Act of Congress, signed by President Lincoln, as a private, nongovernmental 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.

Page iv
Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2024. Tackling the Road Safety Crisis: Saving Lives Through Research and Action. Washington, DC: The National Academies Press. doi: 10.17226/27804.

Consensus Study Reports published by the National Academies of Sciences, Engineering, and Medicine document the evidence-based consensus on the study’s statement of task by an authoring committee of experts. Reports typically include findings, conclusions, and recommendations based on information gathered by the committee and the committee’s 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 opinions contained in proceedings are those of the participants and are not endorsed by other participants, the planning committee, or the National Academies.

Rapid Expert Consultations published by the National Academies of Sciences, Engineering, and Medicine are authored by subject-matter experts on narrowly focused topics that can be supported by a body of evidence. The discussions contained in rapid expert consultations are considered those of the authors and do not contain policy recommendations. Rapid expert consultations are reviewed by the institution before release.

For information about other products and activities of the National Academies, please visit www.nationalacademies.org/about/whatwedo.

The Transportation Research Board is one of seven major program divisions of the National Academies of Sciences, Engineering, and Medicine. The mission of the Transportation Research Board is to mobilize expertise, experience, and knowledge to anticipate and solve complex transportation-related challenges. The Board’s varied activities annually engage about 8,500 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 departments of transportation, 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.

Page v
Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2024. Tackling the Road Safety Crisis: Saving Lives Through Research and Action. Washington, DC: The National Academies Press. doi: 10.17226/27804.

COMMITTEE ON TRANSITIONING EVIDENCE-BASED ROAD SAFETY RESEARCH INTO PRACTICE

JOSEPH L. SCHOFER (Chair), Professor Emeritus, Northwestern University

SAEED D. BARBAT, Executive Technical Leader, Ford Motor Company

RACHEL A. CARPENTER, Chief Safety Officer, California Department of Transportation

GRADY T. CARRICK, Chief Executive Officer, Enforcement Engineering, Inc.

JANICE DANIEL, Professor, Department of Civil and Environmental Engineering, New Jersey Institute of Technology

PAUL P. JOVANIS, Professor Emeritus, The Pennsylvania State University

FRANZ LOEWENHERZ, Mobility Planning and Solutions Manager, City of Bellevue Transportation Department

JEEVANJOT SINGH, Section Chief Engineering, Bureau of Safety, Bicycle and Pedestrian Programs, New Jersey Department of Transportation

BETTY SMOOT-MADISON, Deputy Commissioner, Strategy and Planning, City of Atlanta, Atlanta Department of Transportation

ROBERT C. WUNDERLICH, Director, Center for Transportation Safety, Texas A&M Transportation Institute

C. Y. DAVID YANG, President and Executive Director, AAA Foundation for Traffic Safety

JINGZHEN (GINGER) YANG, Professor of Pediatrics and Epidemiology, Abigail Wexner Research Institute at Nationwide Children’s Hospital, The Ohio State University

Study Staff

DAVID O. WILLAUER, Study Director

THOMAS R. MENZIES, JR., Director, Consensus and Advisory Studies, Transportation Research Board

BRITTANY P. BISHOP, Program Officer

DYLAN REBSTOCK, Program Officer

TIMOTHY B. MARFLAK, Program Coordinator

CLAUDIA SAULS, Program Coordinator

Page vi
Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2024. Tackling the Road Safety Crisis: Saving Lives Through Research and Action. Washington, DC: The National Academies Press. doi: 10.17226/27804.

This page intentionally left blank.

Page vii
Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2024. Tackling the Road Safety Crisis: Saving Lives Through Research and Action. Washington, DC: The National Academies Press. doi: 10.17226/27804.

Reviewers

This Consensus Study Report was reviewed in draft form by individuals chosen for their diverse perspectives and technical expertise. The purpose of this independent review is to provide candid and critical comments that will assist the National Academies of Sciences, Engineering, and Medicine in making each published report as sound as possible and to ensure that it meets the institutional standards for quality, objectivity, evidence, and responsiveness to the study charge. The review comments and draft manuscript remain confidential to protect the integrity of the deliberative process.

We thank the following individuals for their review of this report:

JOHN CAMPBELL, Exponent, Inc.

FRANK GROSS, VHB, Inc.

SHAUNA HALLMARK, Iowa State University

JEFFREY MICHAEL, Johns Hopkins University

BECKY NAUMANN, Centers for Disease Control and Prevention

JEFF PANIATI, Federal Highway Administration (retired) and Institute of Transportation Engineers (retired)

BONNIE POLIN, Massachusetts Department of Transportation

KESHIA POLLACK PORTER (NAM), Johns Hopkins University

Although the reviewers listed above provided many constructive comments 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 HENDRICKSON (NAE), Carnegie Mellon University, and RICARDO MARTINEZ (NAM),

Page viii
Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2024. Tackling the Road Safety Crisis: Saving Lives Through Research and Action. Washington, DC: The National Academies Press. doi: 10.17226/27804.

Emory University. 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 committee and the National Academies.

Page ix
Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2024. Tackling the Road Safety Crisis: Saving Lives Through Research and Action. Washington, DC: The National Academies Press. doi: 10.17226/27804.

Acknowledgments

The committee thanks the many individuals who contributed to its work. The Federal Highway Administration’s (FHWA’s) Office of Safety Research and Development liaison was James Pol, who provided contract oversight and handled information requests from the study staff. Other liaisons include King W. Gee, American Association of State Highway and Transportation Officials (AASHTO) Safety and Mobility, and David Harkey, Insurance Institute for Highway Safety (IIHS). The committee was briefed by or received information from federal and state agencies; foreign academic, policy, and consulting agencies; experts in road safety and transportation planning; and experts in translating medical research into practice. The committee expresses its gratitude from the following individuals.

From federal, state, and local agencies: Jessica Cicchino and David Harkey, IIHS; James Pol and Rick Drumm, FHWA; King W. Gee, AASHTO; Brian Keierleber, Buchanan County Iowa; Robert Molloy, National Transportation Safety Board; Colonel Matt Packard, Colorado State Patrol and the International Association of Chiefs of Police; Bonnie S. Polin, Massachusetts Department of Transportation; Nanda Srinivasan and Essie Wagner, National Highway Traffic Safety Administration; and Rob Viola, New York City Department of Transportation.

From foreign academic, policy, and consulting agencies: Andrew Bur-bridge, Department of Transport and Main Roads, Queensland; Narelle Haworth, Centre for Accident Research & Road Safety, Queensland; Sarah Jones, Driven, Perth; Topaz Peled, Israel National Road Safety Authority; Matteo Rizzi, Swedish Transport Authority; Richard Tay, Royal Melbourne

Page x
Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2024. Tackling the Road Safety Crisis: Saving Lives Through Research and Action. Washington, DC: The National Academies Press. doi: 10.17226/27804.

Institute of Technology; Wouter Van den Berghe, Tilkon Research & Consulting, Belgium; Fred Wegman, Delft University of Technology, Netherlands.

From experts in road safety and transportation planning: John Campbell, Exponent; Frank Gross, VHB; Ezra Hauer, University of Toronto; Ryan Klitzsch, Cambridge Systematics; Jeffrey P. Michael, John Hopkins University; Jeffrey Paniati, Institute of Transportation Engineers; and Robyn Robertson, Traffic Injury Research Foundation.

From experts in translating medical research into practice: Gregory Aarons, University of California, San Diego; Allison Curry, University of Pennsylvania, Children’s Hospital of Philadelphia; Harvey Miller and Matthew D. Ringel, The Ohio State University; and Stewart C. Wang, University of Michigan.

David O. Willauer directed the study and assisted the study committee in preparation of the report along with Brittany P. Bishop, Sarah Jo Peterson, and Dylan Rebstock. Thomas R. Menzies, Jr., provided oversight management, and Timothy B. Marflak and Claudia Sauls provided administrative and logistical support in addition to assisting with preparing the report for publication. Karen Febey, Senior Report Review Officer, managed the report review process.

Page xii
Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2024. Tackling the Road Safety Crisis: Saving Lives Through Research and Action. Washington, DC: The National Academies Press. doi: 10.17226/27804.
Page xiii
Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2024. Tackling the Road Safety Crisis: Saving Lives Through Research and Action. Washington, DC: The National Academies Press. doi: 10.17226/27804.

Preface

To assess the effectiveness of road safety research and its implementation, the Federal Highway Administration, the American Association of State Highway and Transportation Officials, and the Insurance Institute for Highway Safety asked the Transportation Research Board to assemble an expert committee to study the process for transitioning evidence-based road safety research into practice and to recommend process improvements. The 12-member committee was made up of experts in various aspects of road safety, representing state and municipal departments of transportation, safety research, medicine, and the motor vehicle industry. The committee met in person 4 times and virtually 12 more times to examine and assess the processes involved in selecting, conducting, translating, and moving evidence-based road safety research into practice to inform the selection and deployment of crash countermeasures. To inform the study, the committee heard from the multiple safety experts in the United States and abroad listed in the Acknowledgements section of this report.

Joseph L. Schofer, Chair
Committee on Transitioning Evidence-Based
Road Safety Research into Practice

Page xiv
Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2024. Tackling the Road Safety Crisis: Saving Lives Through Research and Action. Washington, DC: The National Academies Press. doi: 10.17226/27804.

This page intentionally left blank.

Page xv
Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2024. Tackling the Road Safety Crisis: Saving Lives Through Research and Action. Washington, DC: The National Academies Press. doi: 10.17226/27804.

Acronyms and Abbreviations

AAA American Automobile Association
AASHTO American Association of State Highway and Transportation Officials
AMRP Annual Modal Research Plan
ANSI American National Standards Institute
BIL Bipartisan Infrastructure Law 2021
BTSCRP Behavioral Transportation Safety Cooperative Research Program
CE civil engineering
CMF crash modification factor
CS Complete Streets
DDSA data-driven safety analysis
DOT Department of Transportation
ELCSI Evaluation of Low-Cost Safety Improvements
EPDO equivalent property damage only
ESRA European Survey of Road Users’ Safety Attitudes
FAST Act Fixing America’s Surface Transportation Act
FFY federal fiscal year
FHWA Federal Highway Administration
FMCSA Federal Motor Carrier Safety Administration
Page xvi
Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2024. Tackling the Road Safety Crisis: Saving Lives Through Research and Action. Washington, DC: The National Academies Press. doi: 10.17226/27804.
FMVSS Federal Motor Vehicle Safety Standards
FPD First Professional Degree
FTA Federal Transit Administration
FY fiscal year
GHSA Governors Highway Safety Association
HAWK High-Intensity Activated Crosswalk
HSA Highway Safety Act
HSIP Highway Safety Improvement Program
HSM Highway Safety Manual
HSP Highway Safety Plan
IHSDM Interactive Highway Safety Design Model
IIHS Insurance Institute for Highway Safety
IIJA Infrastructure Investment and Jobs Act
ISATe Enhanced Interchange Safety Analysis Tool
ITE Institute of Transportation Engineers
ITF International Transport Forum
LOS level of service
LPI Leading Pedestrian Intervals
MUTCD Manual on Uniform Traffic Control Devices
NACTO National Association of City Transportation Officials
NCAP New Car Assessment Program
NCATS National Center for Advancing Translational Sciences
NCHRP National Cooperative Highway Research Program
NHI National Highway Institute
NHS National Highway System
NHTSA National Highway Traffic Safety Administration
NIH National Institutes of Health
NRSRC National Road Safety Research Center
OECD Organisation for Economic Co-operation and Development
PHB Pedestrian Hybrid Beacon
PSC proven safety countermeasure
R&D research and development
Page xvii
Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2024. Tackling the Road Safety Crisis: Saving Lives Through Research and Action. Washington, DC: The National Academies Press. doi: 10.17226/27804.
R&I Research and Innovation
RD&T research, development, and technology
RNS Research Needs Statement
RRFB rectangular rapid flashing beacon
RTCC Research and Technology Coordinating Committee
SHRP Strategic Highway Research Program
SHSO State Highway Safety Office
SHSP Strategic Highway Safety Plan
SPF safety performance function
SPR State Planning and Research
SS4A Safe Streets and Roads for All
SSA Safe System Approach
TRB Transportation Research Board
U.S. DOT U.S. Department of Transportation
U.S.C. United States Code
USCAR United States Council for Automotive Research
UTC University Transportation Center
Page xviii
Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2024. Tackling the Road Safety Crisis: Saving Lives Through Research and Action. Washington, DC: The National Academies Press. doi: 10.17226/27804.

This page intentionally left blank.

Page i
Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2024. Tackling the Road Safety Crisis: Saving Lives Through Research and Action. Washington, DC: The National Academies Press. doi: 10.17226/27804.
Page R1
Page ii
Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2024. Tackling the Road Safety Crisis: Saving Lives Through Research and Action. Washington, DC: The National Academies Press. doi: 10.17226/27804.
Page R2
Page iii
Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2024. Tackling the Road Safety Crisis: Saving Lives Through Research and Action. Washington, DC: The National Academies Press. doi: 10.17226/27804.
Page R3
Page iv
Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2024. Tackling the Road Safety Crisis: Saving Lives Through Research and Action. Washington, DC: The National Academies Press. doi: 10.17226/27804.
Page R4
Page v
Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2024. Tackling the Road Safety Crisis: Saving Lives Through Research and Action. Washington, DC: The National Academies Press. doi: 10.17226/27804.
Page R5
Page vi
Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2024. Tackling the Road Safety Crisis: Saving Lives Through Research and Action. Washington, DC: The National Academies Press. doi: 10.17226/27804.
Page R6
Page vii
Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2024. Tackling the Road Safety Crisis: Saving Lives Through Research and Action. Washington, DC: The National Academies Press. doi: 10.17226/27804.
Page R7
Page viii
Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2024. Tackling the Road Safety Crisis: Saving Lives Through Research and Action. Washington, DC: The National Academies Press. doi: 10.17226/27804.
Page R8
Page ix
Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2024. Tackling the Road Safety Crisis: Saving Lives Through Research and Action. Washington, DC: The National Academies Press. doi: 10.17226/27804.
Page R9
Page x
Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2024. Tackling the Road Safety Crisis: Saving Lives Through Research and Action. Washington, DC: The National Academies Press. doi: 10.17226/27804.
Page R10
Page xi
Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2024. Tackling the Road Safety Crisis: Saving Lives Through Research and Action. Washington, DC: The National Academies Press. doi: 10.17226/27804.
Page R11
Page xii
Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2024. Tackling the Road Safety Crisis: Saving Lives Through Research and Action. Washington, DC: The National Academies Press. doi: 10.17226/27804.
Page R12
Page xiii
Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2024. Tackling the Road Safety Crisis: Saving Lives Through Research and Action. Washington, DC: The National Academies Press. doi: 10.17226/27804.
Page R13
Page xiv
Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2024. Tackling the Road Safety Crisis: Saving Lives Through Research and Action. Washington, DC: The National Academies Press. doi: 10.17226/27804.
Page R14
Page xv
Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2024. Tackling the Road Safety Crisis: Saving Lives Through Research and Action. Washington, DC: The National Academies Press. doi: 10.17226/27804.
Page R15
Page xvi
Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2024. Tackling the Road Safety Crisis: Saving Lives Through Research and Action. Washington, DC: The National Academies Press. doi: 10.17226/27804.
Page R16
Page xvii
Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2024. Tackling the Road Safety Crisis: Saving Lives Through Research and Action. Washington, DC: The National Academies Press. doi: 10.17226/27804.
Page R17
Page xviii
Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2024. Tackling the Road Safety Crisis: Saving Lives Through Research and Action. Washington, DC: The National Academies Press. doi: 10.17226/27804.
Page R18
Next Chapter: Executive Summary
Subscribe to Email from the National Academies
Keep up with all of the activities, publications, and events by subscribing to free updates by email.