
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
Transportation Research Board Special Report 354
Subscriber Categories: Highways; operations and management; safety and human factors
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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
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.
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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.
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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
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
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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),
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.
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
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.
3 RESEARCH TO PRACTICE IN ROAD SAFETY
The Process of Transitioning Safety Research into Practice
Phase II: Countermeasure Implementation
Sidebar: The 85th Percentile Speed Limit: Legacy Guidance Lives on But Where Is the Evidence?
Phase III: Post Implementation Evaluation
4 CHALLENGES TO MOVING CRASH COUNTERMEASURES INTO PRACTICE
Standards and Guidance for Designing Roads
Crash Countermeasures and Road Safety Projects
Sidebar: Combining Complete Streets Implementation with Road Resurfacing
Sidebar: When Deployment Gets Ahead of the Evidence: Complete Streets, Laboratories for Innovation
Sidebar: Using Streets as Laboratories for Innovation
Sidebar: Advancing Road Safety Through Community Innovation: Bellevue, Washington
National Highway Traffic Safety Administration and Behavioral Countermeasures That Work
Educating Transportation Professionals
5 TRANSLATIONAL SCIENCE: ILLUSTRATION OF RESEARCH INTO PRACTICE APPLICATIONS
Research Translation in Biomedicine
Research Translation in Federal Policy Making: Early Childhood Education
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
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| 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 |
| 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 |
| 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 |
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