Karson James
Wyoming Department of Transportation
Tim Kerns
Maryland Motor Vehicle Administration
Rick Birt
District of Columbia Highway Safety Office
Amy Boggs
West Virginia Governorʼs Highway Safety Program
Joel Brisson
Tennessee Highway Safety Office
Mark Ezzell
North Carolina Governorʼs Highway Safety Program
Brian Harmon
Minnesota Department of Public Safety
Lissette Morgan
Arizona Governorʼs Office of Highway Safety
Flavia Pereira
Connecticut Department of Transportation
Max Tyler Roberts
Washington Traffic Safety Commission
__________________
* Membership as of August 2025.
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VICE CHAIR: Joel M. Jundt, Secretary of Transportation, South Dakota Department of Transportation, Pierre
EXECUTIVE DIRECTOR: Victoria Sheehan, Transportation Research Board, Washington, DC
James F. Albaugh, President and CEO, The Boeing Company (retired), Scottsdale, AZ
Carlos M. Braceras, Executive Director, Utah Department of Transportation, Salt Lake City
Douglas C. Ceva, Vice President, Customer Lead Solutions, Prologis, Inc., Jupiter, FL
Nancy Daubenberger, Commissioner of Transportation, Minnesota Department of Transportation, St. Paul
Marie Therese Dominguez, Commissioner, New York State Department of Transportation, Albany
Garrett Eucalitto, Commissioner, Connecticut Department of Transportation, Newington
Andrew Fremier, Executive Director, Metropolitan Transportation Commission, San Francisco, CA
Martha Grabowski, Professor Emerita, Information Systems, Le Moyne College, Madden College of Business & Economics, Cazenovia, NY
Randell Iwasaki, President and CEO, Iwasaki Consulting Services, Walnut Creek, CA
Carol A. Lewis, Professor, Transportation Studies, Texas Southern University, Houston
Scott C. Marler, Director, Iowa Department of Transportation, Ames
Ricardo Martinez, Adjunct Professor of Emergency Medicine, Emory University School of Medicine, Decatur, GA
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Sandra Knight, President, WaterWonks, LLC, Washington, DC
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Gloria Shepherd, Acting Deputy Administrator, Federal Highway Administration, Washington, DC
Karl Simon, Director, Transportation and Climate Division, U.S. Environmental Protection Agency, Washington, DC
Paul P. Skoutelas, President and CEO, American Public Transportation Association, Washington, DC
Jim Tymon, Executive Director, American Association of State Highway and Transportation Officials, Washington, DC
Sang Yi, Acting Administrator, U.S. Maritime Administration, Washington, DC
__________________
* Membership as of August 2025.
BEHAVIORAL TRAFFIC SAFETY COOPERATIVE RESEARCH PROGRAM
BTSCRP RESEARCH REPORT 15
Lesheng Hua
Sheila Klauer
Taylor Linkous
Shu Han
Virginia Tech Transportation Institute
Virginia Polytechnic Institute and State University
Blacksburg, VA
A N D
Allison Curry
Childrenʼs Hospital of Philadelphia
University of Pennsylvania
Philadelphia, PA
Subscriber Categories
Operations and Traffic Management • Safety and Human Factors
Research sponsored by the Governors Highway Safety Association and National Highway Traffic Safety Administration

2025
Since the widespread introduction of motor vehicles more than a century ago, crashes involving their operation remain a significant public health concern. While there have been enormous improvements in highway design and construction, as well as motor vehicle safety, which have been instrumental in lowering the rate of crashes per million miles in the United States, more than 35,000 people die every year in motor vehicle crashes. In far too many cases, the root causes of the crashes are the unsafe behaviors of motor vehicle operators, cyclists, and pedestrians. Understanding human behaviors and developing effective countermeasures to unsafe ones is difficult and remains a major weakness in our traffic safety efforts.
The Behavioral Traffic Safety Cooperative Research Program (BTSCRP) develops practical solutions to save lives, prevent injuries, and reduce costs of road traffic crashes associated with unsafe behaviors. BTSCRP is a forum for coordinated and collaborative research efforts. It is managed by the Transportation Research Board (TRB) under the direction and oversight of the Governors Highway Safety Association (GHSA) with funding provided by the National Highway Traffic Safety Administration (NHTSA). Funding for the program was originally established in Moving Ahead for Progress in the 21st Century (MAP-21), Subsection 402(c), which created the National Cooperative Research and Evaluation Program (NCREP). Fixing Americaʼs Surface Transportation (FAST) Act continued the program. In 2017, GHSA entered into an agreement with TRB to manage the research activities, with the program name changed to Behavioral Traffic Safety Cooperative Research Program. The GHSA Executive Board serves as the governing board for the BTSCRP. The Board consists of officers, representatives of the 10 NHTSA regions, and committee and task force chairs. The Research Committee Chair appoints committee members who recommend projects for funding and provide oversight for the activities of BTSCRP. Its ultimate goal is to oversee a quality research program that is committed to addressing research issues facing State Highway Safety Offices. The Executive Board meets annually to approve research projects. Each selected project is assigned to a panel, appointed by TRB, which provides technical guidance and counsel throughout the life of the project. The majority of panel members represent the intended users of the research projects and have an important role in helping to implement the results. BTSCRP produces a series of research reports and other products such as guidebooks for practitioners. Primary emphasis is placed on disseminating BTSCRP results to the intended users of the research: State Highway Safety Offices and their constituents.
Project BTS-28
ISSN 2766-5976 (Print)
ISSN 2766-5984 (Online)
ISBN 978-0-309-99489-7
Library of Congress Control Number 2025945339
© 2025 by the National Academy of Sciences. National Academies of Sciences, Engineering, and Medicine and the graphical logo are trademarks of the National Academy of Sciences. All rights reserved.
Authors herein are responsible for the originality and accuracy 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.
The National Academy of Sciences (NAS) grants permission to reproduce written material in this publication for classroom and non-commercial purposes subject to the rights of any third parties and appropriate attribution. Permission is given with the understanding that none of the material will be used to imply NAS, TRB, AASHTO, APTA, FAA, FHWA, FTA, GHSA, or NHTSA endorsement of a particular product, method, or practice. For other uses of the written material, users must request permission from the National Academies Press.
The research report was reviewed by the technical panel and accepted for publication according to procedures established and overseen by the Transportation Research Board and approved by the National Academies of Sciences, Engineering, and Medicine.
This material is based upon work sponsored by the Governors Highway Safety Association in cooperation with the National Highway Traffic Safety Administration under Agreement No. DTNH2216H00018 or 693JJ92250010. Any opinions, findings, and conclusions or recommendations expressed or implied in this document are those of the researchers who performed the research and are not necessarily those of the Transportation Research Board; the National Academies of Sciences, Engineering, and Medicine; or the program sponsors.
The Transportation Research Board does not develop, issue, or publish standards or specifications. The Transportation Research Board manages applied research projects which provide the scientific foundation that may be used by Transportation Research Board sponsors, industry associations, or other organizations as the basis for revised practices, procedures, or specifications.
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BEHAVIORAL TRAFFIC SAFETY COOPERATIVE RESEARCH PROGRAM
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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. Tsu-Jae Liu 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.
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Learn more about the National Academies of Sciences, Engineering, and Medicine at www.nationalacademies.org.
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 Boardʼs 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.
Monique R. Evans, Director, Cooperative Research Programs
Waseem Dekelbab, Deputy Director, Cooperative Research Programs
Richard A. Retting, Senior Program Officer
Tijhuana Stapleton, Senior Program Assistant
Natalie Barnes, Director of Publications
Lincoln Greenhaw, Editor
Stella Obazee-Igbinedion, Montgomery County Government, Gaithersburg, MD (Chair)
Thomas Antkow, Driver Safety Consultants, Inc./Adult Driver Services, Maryville, TN
Amy M. Boggs, West Virginia Governorʼs Highway Safety Program, Charleston, WV
Anik Das, AtkinsRéalis, Dallas, TX
Melissa Paciulli, University of Massachusetts, Amherst, Amherst, MA
Shraddha Sagar, University of Florida, Gainesville, FL
Christine Watson, NHTSA Liaison
Bernardo B. Kleiner, TRB Liaison
The research reported herein was performed under BTSCRP Project BTS-28 by the Virginia Tech Transportation Institute (VTTI) with support from the Childrenʼs Hospital of Philadelphia (CHOP). Dr. Sheila “Charlie” Klauer, Research Scientist within the Division of Vehicle, Driver, and System Safety, was the Project Director and Principal Investigator. The other VTTI authors of this report are Dr. Lesheng Hua, Research Associate, Kaitlyn Bedwell, Research Assistant, and Taylor Linkous, Project Associate. The CHOP researchers include Dr. Allison Curry, Senior Research Scientist and Epidemiologist.
By Richard A. Retting
Staff Officer
Transportation Research Board
BTSCRP Research Report 15: Teen Driving Performance Associated with Distraction, ADHD, and Other Risk Factors provides insights into traffic safety risks for teen drivers with different levels of attention-deficit/hyperactivity disorder (ADHD) screen scores. The report uses naturalistic driving data to assess the incidence of eyes off road (EOR) and crash risk for teen drivers with and without ADHD. The report concludes that teen drivers with ADHD tend to look away from the road more frequently and may be at an elevated risk for missed hazards. This report will be of interest to state highway safety offices (SHSOs) and other stakeholders concerned with young-driver safety.
Young drivers with neurodevelopmental disabilities may be at more risk for motor vehicle crashes due to behavior characteristics commonly associated with these conditions. In recent years, a growing body of research has examined driving risks for teens with autism and those with ADHD. Research has identified concerns about the driving skills of teenagers with ADHD, as well as their increased tendencies to become distracted while driving and to drive at higher speeds. Determining the role of distracted driving in crashes is difficult and inexact for many reasons, including a general lack of evidence.
Under BTSCRP Project BTS-28, “Teen Driving Performance Associated with Distraction, ADHD, and Other Risk Factors,” Virginia Polytechnic Institute and State University was asked to (1) gauge the association between confirmed instances of distracting behaviors and inattention to the driving task by teen drivers with crash and near-crash (CNC) involvement, in relation to their incidence during baseline events; (2) determine whether these instances contribute to CNCs, and if and how these relationships change with increasing driving experience; and (3) compare exposure-based CNC involvement rates, and self-reported risky driving behaviors, for teen drivers with different levels of ADHD screen scores, taking into account the potential influence of other behavioral and demographic factors captured in naturalistic driving study (NDS) data.
Results of BTSCRP Project BTS-28 are documented in BTSCRP Research Report 15. In addition to this report, the following deliverables are available on the National Academies Press website (https://nap.nationalacademies.org) by searching BTSCRP Research Report 15: Teen Driving Performance Associated with Distraction, ADHD, and Other Risk Factors:
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