
Britton Johnson
Elizabeth Roche
Regina Nguyen
Angelina Caggiano
Ana Daley
Kimley-Horn and Associates, Inc.
Waltham, MA
Stephanie Ivey
University of Memphis
Memphis, TN
Submitted June 2026

CRP Web-Only Document 1
Evaluation of the Transportation Pooled Fund Program
The Cooperative Research Programs (CRP) Web-Only Document series publishes the findings of projects managed by CRP upon request by organizations outside of CRP’s core research programs.
© 2026 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.
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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.
DISCLAIMER
This material is based upon work supported by the FHWA under Agreement No. 693JJ323D000023. 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; the FHWA; 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.
The Transportation Research Board, the National Academies, and the sponsors of the Cooperative Research Programs do not endorse products or manufacturers. Trade or manufacturers’ names appear herein solely because they are considered essential to the object of the report.

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. Neil Shubin 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. Monica Bertagnolli 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 four centers 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 more than 5,500 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 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
Gwen Chisholm Smith, Manager, Transit Cooperative Research Program
Patrick Zelinski, Senior Program Officer
Kevin Padilla, Senior Program Assistant
Natalie Barnes, Director of Publications
Brian Haefs, Associate Director of Publications
Jennifer Correro, Assistant Editor
Tyson D. Rupnow, Applied Research Associates, Inc., Baton Rouge, LA (Chair)
Chandra K. Akisetty, Maryland State Highway Administration, Hanover, MD
Anne Kay Freeman, Washington State Department of Transportation, Olympia, WA
Beverly Thompson Kuhn, C-DEX Advisors, LLC, College Station, TX
Megan E. Swanson, Illinois Department of Transportation, Springfield, IL
Mary Huie, FHWA Liaison
The evaluation team acknowledges Devin Johnson, Ariadna Mendoza, Jocelyn Reyes, and Charlotte Rector from the University of Memphis for their valuable contributions to this project.
The Federal Highway Administration (FHWA) is an agency within the U.S. Department of Transportation that supports state and local governments in the design, construction, and maintenance of the nation’s highway system (Federal Aid Highway Program) and various federally and tribally owned lands (Federal Lands Highway Program). A significant portion of FHWA’s research activities, evolved over many years in response to successive legislative initiatives, is managed by agency staff from the Research and Technology (R&T) Program housed at the Turner-Fairbank Highway Research Center in McLean, Virginia, and other locations. The aim of FHWA’s R&T activities is to support FHWA’s mission through deployment of innovations that address current issues and emerging challenges, create efficiencies in the highway and transportation sector, and provide information to support policy decisions.
The FHWA Research and Technology Evaluation Program seeks to assess and communicate the benefits of FHWA’s R&T efforts; ensure that the organization is expending public resources efficiently and effectively; and build evidence to shape and improve policymaking. FHWA partners with state transportation departments, local agencies, industries, and academia to conduct research on issues of national significance and accelerate adoption and deployment of promising research products.
To ensure that R&T activities are effectively and efficiently contributing to FHWA’s mission, R&T staff apply leading practices in research management and occasionally undertake formal evaluations of select activities, projects, or programs. In addition, FHWA’s R&T staff solicit advice from the Transportation Research Board (TRB), particularly the Research and Technology Coordinating Committee (RTCC). The RTCC issues annual reports commenting on R&T programs generally and suggesting adjustments to program strategies and approaches to improve program relevance, effectiveness, and impact.
In 2014, FHWA initiated the R&T Evaluation Program with two core objectives:
Under the R&T Evaluation Program’s initial phase, 16 evaluations were conducted by the Volpe National Transportation Systems Center.
In 2019, FHWA asked TRB to undertake management of evaluations under a second phase of the R&T Evaluation Program. TRB’s activities under this TRB-FHWA Program Evaluation (TFPE) effort comprise a series of projects evaluating research activities designated by FHWA and conducted by multiple research teams under TRB’s direction and oversight. To date, the following projects have been completed:
These evaluations are intended to generate evidence and provide data-driven assessments that substantiate the contributions of FHWA’s R&T Program to fulfilling the agency’s mission and strategic goals. The evaluations are focused on estimating and forecasting the socioeconomic returns from investments in R&T Program activities to inform future research plans and improve technology transition outcomes. To this end, the evaluations include quantitative estimates of impact metrics. In addition, the evaluations provide input on data collection, tracking, and monitoring for ongoing program evaluation and improvement.
Strategies for Program Improvement
Organization of this Final Report
Chapter 2. Understanding of the TPF Program
Program Administration & Participants
Funding Commitments and Contributions
Chapter 3. TPF Evaluation Scope and Approach
Chapter 4. Program Data Analysis
Proportion of State DOT Research Dollars used for TPF Studies