Public transportation agencies throughout the United States have introduced, or are planning to introduce, zero-emission buses and supporting technologies into their fleets. Consequently, transit agencies need to train current employees and hire new employees with the relevant skills to safely and effectively operate and maintain these complex vehicles.
TCRP Research Report 252: Public Transit Workforce Development for Zero-Emission Vehicles, from TRB’s Transit Cooperative Research Program, identifies and is organized around seven areas (referred to as tasks) that transit agencies will need to address. Each task identifies the skills and knowledge needed by transit agency frontline employees to operate and maintain zero-emission vehicles in revenue service, specifically full-size, 40- to 60-foot battery-electric and fuel-cell buses.
114 pages
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ISBN Paperback: 0-309-60102-9
ISBN Ebook: 0-309-60103-7
DOI:
https://doi.org/10.17226/29287
National Academies of Sciences, Engineering, and Medicine. 2025. Public Transit Workforce Development for Zero-Emission Vehicles. Washington, DC: The National Academies Press.
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Transit agencies use electrical traction (overhead catenary or third rail)—which is typically designed using high alternating-current or direct-current voltages—for the propulsion of trains. The running rails are used as part of the system to return negative power to substations. Insulated joints (IJs) are trackwork components installed in the rails to provide train control circuits and traction power segment separation between blocks.
TCRP Research Report 255: Investigation and Mitigation of Insulated Joint Electrical Failure: A Guide, from TRB's Transit Cooperative Research Program, provides information on how to identify arcing at IJs, methods to diagnose the contributing factors, underlying causes, strategies for investigating IJ failures, and examples of how others have mitigated arcing.
178 pages
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ISBN Paperback: 0-309-60053-7
ISBN Ebook: 0-309-60054-5
DOI:
https://doi.org/10.17226/29274
National Academies of Sciences, Engineering, and Medicine. 2025. Investigation and Mitigation of Insulated Joint Electrical Failure: A Guide. Washington, DC: The National Academies Press.
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Concerns about transit assaults and perceived safety play an important role in transit use and ridership. Research shows that if people felt more secure when traveling and waiting at railway stations, the ridership could increase by 10 percent.
TCRP Research Report 258: Mitigation Strategies for Deterring Transit Assaults, from TRB's Transit Cooperative Research Program, equips agencies with practical strategies and evidence-based recommendations to enhance safety and security in the transit environment.
92 pages
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ISBN Paperback: 0-309-99483-7
ISBN Ebook: 0-309-99484-5
DOI:
https://doi.org/10.17226/29204
National Academies of Sciences, Engineering, and Medicine. 2025. Mitigation Strategies for Deterring Transit Assaults. Washington, DC: The National Academies Press.
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The Every Day Counts (EDC) Program is a key component of the Technology and Innovation Deployment Program (TIDP) within the U.S. Federal Highway Administration at the U.S. Department of Transportation. It works to increase the use of new technologies and approaches that can speed the planning and completion of transportation projects.
CRP Special Release 5: Evaluation of the Every Day Counts Program, from the Transportation Research Board, provides a summary of the EDC Program evaluation conducted from 2023 through 2024.
68 pages
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ISBN Paperback: 0-309-73353-7
ISBN Ebook: 0-309-73354-5
DOI:
https://doi.org/10.17226/28871
National Academies of Sciences, Engineering, and Medicine. 2025. Evaluation of the Every Day Counts Program. Washington, DC: The National Academies Press.
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Building Information Modeling (BIM) allows transportation infrastructure project teams to improve the overall quality of the planning and design of projects as well as more efficiently construct the project through improved planning, cost control, and automation, such as machine-guided equipment.
The TRB Cooperative Research Program's CRP Special Release 4: Lifecycle BIM for Infrastructure: A Business Case for Project Delivery and Asset Management focuses on the development of resources to support the adoption of BIM by highway agencies.
Supplemental to the report are an assessment matrix for Appendix E: BIM Maturity Matrix for Transportation Agencies, BIM multi-media materials, and video interviews.
138 pages
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ISBN Paperback: 0-309-69845-6
ISBN Ebook: 0-309-69431-0
DOI:
https://doi.org/10.17226/26731
National Academies of Sciences, Engineering, and Medicine. 2023. Lifecycle BIM for Infrastructure: A Business Case for Project Delivery and Asset Management. Washington, DC: The National Academies Press.
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Beginning in 2019, the U.S. Federal Highway Administration (FHWA) requested that TRB be directly involved in managing evaluations of selected projects undertaken by the agency.
The TRB Cooperative Research Program's CRP Special Release 3: Evaluation of Ultra-High Performance Concrete Connections presents an evaluation of the UHPC Research and Development Program. UHPC is used in highway bridges, particularly for bridge-deck-level connections for prefabricated bridge elements.
48 pages
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ISBN Paperback: 0-309-68708-X
ISBN Ebook: 0-309-72028-1
DOI:
https://doi.org/10.17226/26634
National Academies of Sciences, Engineering, and Medicine. 2022. Evaluation of Ultra-High Performance Concrete Connections. Washington, DC: The National Academies Press.
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Beginning in 2019, the U.S. Federal Highway Administration (FHWA) requested that TRB be directly involved in managing evaluations of selected projects undertaken by the agency.
The TRB Cooperative Research Program's CRP Special Release 2: Evaluation of the Exploratory Advanced Research Program presents an evaluation of the program, which works on a range of topics, including human-automation interaction, safety improvements through advanced data analysis, innovative materials for highway pavements and structures, methods to improve transportation system resilience, and technologies for alternative fuels development.
72 pages
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ISBN Paperback: 0-309-68700-4
ISBN Ebook: 0-309-72026-5
DOI:
https://doi.org/10.17226/26616
National Academies of Sciences, Engineering, and Medicine. 2022. Evaluation of the Exploratory Advanced Research Program. Washington, DC: The National Academies Press.
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Beginning in 2019, the U.S. Federal Highway Administration (FHWA) requested that TRB be directly involved in managing evaluations of selected projects undertaken by the agency.
The TRB Cooperative Research Program's CRP Special Release 1: Evaluation of the Asphalt Binder Quality Tester presents an evaluation of a cooperative research and development effort that supported the development of the ABQT. The ABQT is a rapid testing device for binder quality, which is important in terms of the quality and performance of asphalt pavement.
66 pages
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ISBN Paperback: 0-309-68701-2
ISBN Ebook: 0-309-72023-0
DOI:
https://doi.org/10.17226/26603
National Academies of Sciences, Engineering, and Medicine. 2022. Evaluation of the Asphalt Binder Quality Tester. Washington, DC: The National Academies Press.
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TRB's National Cooperative Highway Research Program (NCHRP) Report 626: NDT Technology for Quality Assurance of HMA Pavement Construction explores the application of nondestructive testing (NDT) technologies in the quality assurance of hot-mix asphalt (HMA) pavement construction. Supplementary material to NCHRP Report 626 was published as NCHRP Web-Only Document 133: Supporting Materials for NCHRP Report 626
112 pages
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ISBN Paperback: 0-309-11777-1
ISBN Ebook: 0-309-28002-8
DOI:
https://doi.org/10.17226/14272
National Academies of Sciences, Engineering, and Medicine. 2009. NDT Technology for Quality Assurance of HMA Pavement Construction. Washington, DC: The National Academies Press.
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TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 380: Applications of Illuminated, Active, In-Pavement Marker Systems (IPMs) explores the state of IPM technology, experiences with IPM applications, and potential IPM research needs.
72 pages
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ISBN Paperback: 0-309-09808-4
ISBN Ebook: 0-309-27955-0
DOI:
https://doi.org/10.17226/14182
National Academies of Sciences, Engineering, and Medicine. 2008. Applications of Illuminated, Active, In-Pavement Marker Systems. Washington, DC: The National Academies Press.
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TRB's National Cooperative Highway Research Program (NCHRP) Report 590: Multi-Objective Optimization for Bridge Management Systems examines the development of methodologies for network- and project-level optimization of multiple, user-specified bridge management performance criteria. The report also explores the development of bridge management software modules to implement the methodologies. The report includes software modules, a user's manual, and demonstration database as part of an accompanying CD-ROM, which is available for download as an ISO image.
Links to the download site for the combined appendices and data-viewing ISO and to instructions on burning an .ISO CD-ROM are below.
Help on Burning an .ISO CD-ROM Image
Download the .ISO CD-ROM Image
(Warning: This is a large and may take some time to download using a high-speed connection.)
There is a summary document, Paths to Practice, available.
130 pages
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ISBN Ebook: 0-309-42145-4
DOI:
https://doi.org/10.17226/23147
National Academies of Sciences, Engineering, and Medicine. 2007. Multi-Objective Optimization for Bridge Management Systems. Washington, DC: The National Academies Press.
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TRB's National Cooperative Highway Research Program (NCHRP) Report 525: Surface Transportation Security and TRB's Transit Cooperative Research Program (TCRP) Report 86: Public Transportation Security series publications have jointly published Making Transportation in Tunnels Safe and Secure. The report is Volume 12 in each series. The report is designed to provide transportation tunnel owners and operators with guidelines for protecting their tunnels by minimizing the damage potential from extreme events such that, if damaged, they may be returned to full functionality in relatively short periods. The report examines safety and security guidelines for owners and operators of transportation tunnels to use in identifying principal vulnerabilities of tunnels to various hazards and threats. The report also explores potential physical countermeasures; potential operational countermeasures; and deployable, integrated systems for emergency-related command, control, communications, and information.
NCHRP Report 525: Surface Transportation Security is a series in which relevant information is assembled into single, concise volumes—each pertaining to a specific security problem and closely related issues. The volumes focus on the concerns that transportation agencies are addressing when developing programs in response to the terrorist attacks of September 11, 2001, and the anthrax attacks that followed. Future volumes of the report will be issued as they are completed.
The TCRP Report 86: Public Transportation Security series assembles relevant information into single, concise volumes, each pertaining to a specific security problem and closely related issues. These volumes focus on the concerns that transit agencies are addressing when developing programs in response to the terrorist attacks of September 11, 2001, and the anthrax attacks that followed. Future volumes of the report will be issued as they are completed.
180 pages
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paperback
ISBN Paperback: 0-309-09871-8
ISBN Ebook: 0-309-27909-7
DOI:
https://doi.org/10.17226/13965
National Academies of Sciences, Engineering, and Medicine. 2006. Making Transportation Tunnels Safe and Secure. Washington, DC: The National Academies Press.
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TRB's National Cooperative Highway Research Program (NCHRP) Report 509: Equipment for Collecting Traffic Load Data identifies the key issues that should be considered by state and other highway operating agencies in selecting traffic equipment for collecting the truck volumes and load spectra needed for analysis and design of pavement structures.
58 pages
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ISBN Ebook: 0-309-27523-7
DOI:
https://doi.org/10.17226/13717
National Academies of Sciences, Engineering, and Medicine. 2004. Equipment for Collecting Traffic Load Data. Washington, DC: The National Academies Press.
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