TRB's Truck Size and Weight Limits Research Plan Committee has issued an interim letter report that explores the development of a research plan to reduce uncertainties in estimates of the impacts of changes in truck size and weight limits. The report summarizes the research recommendations of past truck size and weight limit studies, presents lists of candidate research problem statement topics...

A slideshow summary of the Transportation Research Board's pre- and post-September 11, 2001, transportation security and resilience activities is updated monthly.

Since September 11, 2001, more than 200 security-, emergency management-, and infrastructure protection-related planning and implementation projects have been initiated through programs managed by TRB. This report, updated monthly, provides information on more than $30 million worth of completed and ongoing TRB security-related research. The report includes information on research that is forma...

To keep pace with accelerating rate of research distribution, the Transportation Research Record: Journal of the Transportation Research Board is now publishing articles as soon as they are finalized. The latest papers to be published are as follows: Use of a Laser Diffractometer to Obtain the Particle Size Distribution of Fine-Grained Soils Interstate Speed Profiles Conditioning and Testing Pr...

TRB's Transit Research Analysis Committee (TRAC) has delivered a letter report to Mr. Vincent Valdes, Associate Administrator for Research, Demonstration, and Innovation, Federal Transit Administration (FTA). The February 27, 2018, letter report provides feedback to FTA on its innovation initiatives that are a focus of the administration’s research plan. TRAC, an interdisciplinary committee of ...

TR Circular E-C228: Rebuilding and Retrofitting the Transportation Infrastructure documents the presentations from a conference of the same name held in Washington, D.C., in September 2017. This meeting was the 11th in a series of Spotlight Conferences funded by the U.S. Department of Transportation’s (DOT) Office of the Assistant Secretary for Research and Technology, University Transportation...

TRB's Committee for the Review of Federal Highway Administration (FHWA) Infrastructure R&D Program has issued its first Long-Term Infrastructure Program (LTIP) letter report. The first meeting was structured around a series of briefings on the two components of the LTIP: the Long-Term Pavement Performance (LTPP) program and the Long-Term Bridge Performance (LTBP) program. The charge to the ...

TRB’s National Cooperative Highway Research Program (NCHRP) Research Results Digest 402: Continuing Project to Synthesize Information on Highway Problems provides a 2018 update on current knowledge and practice, in a compact format, without the detailed directions usually found in handbooks or design manuals. Each report in the series provides a compendium of the best knowledge available on tho...

The 2017 Annual Report provides a summary of the Transportation Research Board's (TRB's) programs and activities over the last year and an overview of the individual divisions within TRB. The mission of TRB is to provide leadership in transportation innovation and progress through research and information exchange, conducted within a setting that is objective, interdisciplinary, and multimodal....

TRB’s Airport Cooperative Research Program (ACRP) has released its annual report that reflects on its 2017 achievements and includes initiating 44 new research and special projects and publishing 19 research reports. New approaches to sharing research ideas, convening experts on emerging and rapidly evolving issues, and implementing research are highlighted in the 2017 report.

TRB’s National Cooperative Highway Research Program (NCHRP) has released its annual report. During 2017, NCHRP completed 170 research projects, published 60 research products, and approved 64 new and continuation projects. The report also presents detailed information about the operation of NCHRP.

TRB’s Airport Cooperative Research Program (ACRP) Research Results Digest 27: Legal Aspects of Airport Programs - An Update is a digest of the background and status of ACRP Project 11-01, Legal Aspects of Airport Programs. During the first 11 years of ACRP Project 11-01, there have been almost 50 topics selected for legal research in broad areas of interest to the airport legal community. Thirt...

TRB’s Transit Cooperative Research Program (TCRP) has released its annual report, which provides background and an overview of the program, status of each of TCRP’s projects, and a summary of some of the program's accomplishments for the year.

TRB’s Innovations Deserving Exploratory Analysis (IDEA) program has issued its New IDEAS for Transit: Transit IDEA Program Annual Report, which summarizes recent investigations conducted under the Transit IDEA program.   The Transit IDEA Program is designed to foster innovative concepts that have the potential to enhance security, increase ridership, improve efficiency for transit agencies...

TRB's TR Circular E-C227: Advancing Highway Traffic Monitoring Through Strategic Research explores the state of the practice and state of the art in highway traffic monitoring. It explores data acquisition, analysis and reporting tools, quality assurance and quality control techniques, and trends in emerging technologies. It explores how highway traffic data are acquired and used, and will prov...

The full edition of the July–August 2017  TR News  magazine is now available.  Moving research into practice is the theme of feature articles in this edition. Authors describe today’s successes, present a systematic approach that has proved effective at a state department of transportation, describe federal programs encouraging innovations at the state level, discuss initiatives ...

TRB’s Transit Cooperative Research Program (TCRP) Research Results Digest 114: Synthesis of Information Related to Transit Practices is a digest of the progress and status of TCRP Project J-7, “Synthesis of Information Related to Transit Practices,” for which the Transportation Research Board is the agency conducting the research.

TRB’s Innovations Deserving Exploratory Analysis (IDEA) programs fund research into promising but unproven innovations for highways, transportation safety, and transit.

TRB’s Innovations Deserving Exploratory Analysis (IDEA) program has released the latest issue of its New IDEAs for Highway Systems: Annual Progress Report, which summarizes projects active or completed during the 2017 program year.  A project of the National Cooperative Highway Research Program (NCHRP), the  NCHRP Highway IDEA program seeks proposals with potential to advance the cons...

TRB's E-Circular 225: explores the presentations and discussions from a 2007 workshop that provided a forum for researchers, government officials, and private-sector representatives to exchange ideas on how the freight transportation system can be improved. Congestion in ports, on access roads to intermodal facilities, and on the rail system has significant impacts on the productivity and compe...

TRB's E-Circular 226: Transportation System Resilience: Preparation, Recovery, and Adaptation explores research issues related to implementing transportation systems resilience, and explores themes of a whole system approach to resilience, weather and advances in forecasting, an integrated approach to cyber-physical security for transportation, a European perspective on research for resilient r...

The full edition of the May-June 2017 TR News is now available. This edition explores the role of transportation in economic development. Articles feature information about benefit-cost analysis, freight production models, transportation satellite accounts, and right sizing strategies. The TR News is TRB's bimonthly magazine featuring timely articles on innovative and state-of-the-art research ...

TRB's National Cooperative Highway Research Program (NCHRP) Innovations Deserving Exploratory Analysis (IDEA) has released Final Report 181: Development of Small Specimen Geometry for Asphalt Mixture Performance Testing. The use of small specimen geometries in Asphalt Mixture Performance Tester (AMPT) offer a means to measure as-built pavement layers. Small specimen geometries may improve the e...

TRB's National Cooperative Highway Research Program (NCHRP) has developed a brochure for CEOs of state departments of transportation (DOTs) to help familiarize them with the range of research-based, practical benefits provided to states through NCHRP. The brochure explores the types of products released by NCHRP to help states with developing cost-efficient, safer, or more reliable practices or...

The latest of TRB's National Cooperative Highway Research Program (NCHRP) Ready Results explores NCHRP Report 826 : Estimating Highway Preconstruction Services Costs, which explores ways to implement a framework for data-driven cost-estimating models for transportation projects. This framework helps agencies to estimate how much it will cost to plan, program, permit, and design a project during...

The full edition of the March–April 2017 TR News is now available. Photographic highlights from TRB’s 96th Annual Meeting are featured. This edition explores innovations in freight planning as well as insights into transportation safety culture from a recent policy study that focused on offshore oil and gas drilling, while another feature covers the National Academies of Sciences, Engineering, ...

TRB’s Airport Cooperative Research Program has released WebResource 2: Airport Passenger Terminal Design Library. This electronic resources library houses searchable information on, and links to, existing ACRP, federal, and other industry documents related to airport passenger terminal planning and design.

A featured article in the May-June 2017 issue of the TR News examines how to develop appropriate evaluation frameworks that account for the integration of new technologies into the infrastructure in order to accurately value the current highway system. The TR News is TRB's bimonthly magazine featuring timely articles on innovative and state-of-the-art research and practice in all modes of trans...

TRB's National Cooperative Highway Research Program (NCHRP) Innovations Deserving Exploratory Analysis (IDEA) Program has released Report 175: Rapid Detection of Fatigue Cracking in Steel Anchor Rods Using the Impulse Response Method. The report explores the development of a rapid screening nondestructive test procedure utilizing stress wave interrogation that could detect fatigue cracks in ste...

The full edition of the January-February 2017 TR News is now available. This edition explores information about laws affecting driverless vehicles, the freight project selection process, environmental performance measures, and sharing operations data. The TR News is TRB's bimonthly magazine featuring timely articles on innovative and state-of-the-art research and practice in all modes of transp...