Papers released the week of April 15 through the Transportation Research Record: Journal of the Transportation Research Board OnlineFirst portal include the following: Electric Transit Route Network Design Problem: Model and Application - Christina Iliopoulou, Ioannis Tassopoulos, Konstantinos Kepaptsoglou, Grigorios Beligiannis Framing the Bicyclist: A Qualitative Study of Media Discourse abou...

TRB's Transit Research Analysis Committee (TRAC) has delivered a letter report to Mr. Vincent Valdes, Associate Administrator for Research, Demonstration, and Innovation at the Federal Transit Administration (FTA). The April 12, 2019 letter report provides feedback to FTA on its innovation initiatives that are a focus of the administration’s research plan. TRAC, an interdisciplinary committee o...

Papers released the week of April 8 through the Transportation Research Record: Journal of the Transportation Research Board OnlineFirst portal include the following: Demand Calibration of Multimodal Microscopic Traffic Simulation using Weighted Discrete SPSA - Simon Oh, Ravi Seshadri, Carlos Lima Azevedo, Moshe E. Ben-Akiva Comparison of Traffic Conflict Indicators for Crash Estimation using P...

Papers released the week of April 1 through the Transportation Research Record: Journal of the Transportation Research Board OnlineFirst portal include the following: Use of Open Data to Assess Cyclist Safety in London - Daniel J. Collins, Daniel J. Graham Toll Choice and Stochastic User Equilibrium: Ticking All the Boxes - Jan C. Zill, Pedro Camargo, Naznin Sultana Daisy, Tim Veitch Pasadena’s...

Papers released the week of March 25 through the Transportation Research Record: Journal of the Transportation Research Board OnlineFirst portal include the following: Smart Signal Control System for Accident Prevention and Arterial Speed Harmonization under Connected Vehicle Environment - Xianfeng (Terry) Yang, Gang-Len Chang, Zhao Zhang, Pengfei (Taylor) Li Children’s Independent Trips on Wee...

Papers released the week of March 18 through the Transportation Research Record: Journal of the Transportation Research Board OnlineFirst portal include the following: A Balanced Mix Design Method for Selecting the Optimum Binder Content of Cold In-Place Recycling Asphalt Mixtures - Ahmed Saidi, Ayman Ali, Wade Lein, Yusuf Mehta Analysis of Crash Rates at Freeway Diverge Areas using Bayesian To...

Papers released the week of March 11 through the Transportation Research Record: Journal of the Transportation Research Board OnlineFirst portal include the following: Bicycle and Pedestrian Count Programs: Scan of Current U.S. Practice - Peter B. Ohlms, Lance E. Dougald, Hannah E. MacKnight A Numerical Study on Installation Effects and Long-Term Shaft Resistance of Pre-Bored Piles in Cohesive ...

Papers released the week of March 4 through the Transportation Research Record: Journal of the Transportation Research Board OnlineFirst portal include the following: Optimizing Canada–U.S. Border Crossing Investments for Export Competitiveness - Hamed Shahrokhi Shahraki, Chris Bachmann Robust Stop-Skipping at the Tactical Planning Stage with Evolutionary Optimization - Konstantinos Gkiotsaliti...

The National Academy of Sciences, Engineering, and Medicine has released a report that documents the status and promising future directions of materials research in the United States in the context of similar efforts worldwide. This third decadal survey in materials research reviews the progress and achievements in materials research and changes in the materials research landscape over the last...

Papers released the week of February 25 through the Transportation Research Record: Journal of the Transportation Research Service OnlineFirst portal include the following: The Use of Laboratory-Measured and Strain-Gauge Backcalculated Asphalt Stiffness for Rutting Performance Prediction - Erdem Coleri, John T. Harvey Structural Analysis for APT Sections Based on Deflection Parameters - Edgar C...

TRB's Airport Cooperative Research Program (ACRP) Web-Only Document 37: Research Roadmap in the Area of Airport Operations and Maintenance outlines the key research gaps and areas of interest for airports in the field of operations and maintenance (O&M) over the next five years. Based on the result of the outreach and literature review, forty-two research ideas were generated and categorize...

TRB's Committee for the Review of Federal Highway Administration (FHWA) Infrastructure R&D Program has issued its annual letter report on FHWA’s Long-Term Infrastructure Program (LTIP). The LTIP includes FHWA’s Long-Term Pavement Performance (LTPP) and Long-Term Bridge Performance (LTBP) Programs. In this report, the committee notes important accomplishments of the LTIP during 2018, includi...

The 2018 Annual Report summarizes TRB’s accomplishments in each of its major program areas and how TRB has served the nation and the global transportation professional community during 2018. TRB provides leadership in transportation innovation through timely, evidence-based policy advice, research, and information exchange, conducted within a setting that is independent, objective, interdiscipl...

TRB Special Report 330: Performance of Bridges That Received Funding Under the Innovative Bridge Research and Construction Program, examines the results of a federal program to promote innovation in highway bridge construction. The Innovative Bridge Research and Construction (IBRC) program, created by act of Congress, provided state departments of transportation with a total of $128.7 million i...

As many as 42 papers are now available in an online-first format for TRB’s Transportation Research Record (TRR): Journal of the Transportation Research Board . A total of 97 papers have been processed and sent to authors. Browse all online first papers on the TRR Online website.

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...

TRB has released Critical Issues in Transportation 2019 . In this report, which is updated periodically by the TRB Executive Committee, a series of challenging questions are posed to explore issues and opportunities that may arise 10 to 20 years into the future. These questions, 63 in all, have been organized into 12 topic areas and provide a way to frame future areas of research, policy analys...

TRB’s Airport Cooperative Research Program (ACRP) has released its annual report that reflects on its 2018 achievements and includes initiating 55 new research and special projects and publishing 29 research reports. New approaches to sharing research ideas, convening experts on emerging and rapidly evolving issues, and implementing research are highlighted in the 2018 report.

TRB’s National Cooperative Highway Research Program (NCHRP) has released its annual report. During 2018, NCHRP completed 150 research projects, published 68 research products, and approved 58 new and continuation projects. The report also presents detailed information about the operation of NCHRP.

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) programs fund research into promising but unproven innovations for highways, transportation safety, and transit.

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 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 2018 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 Special Report 329: Renewing the National Commitment to the Interstate Highway System: A Foundation for the Future explores pending and future federal investment and policy decisions concerning the federal Interstate Highway System. Congress asked the committee to make recommendations on the “features, standards, capacity needs, application of technologies, and intergovernmental roles to up...

TRB's Truck Size and Weight Limits Research Plan Committee has issued its second and final report, Research to Support Evaluation of Truck Size and Weight Regulations, to the U.S. Department of Transportation. The report presents a research plan to reduce the major sources of uncertainty in projections of the consequences of proposed changes in truck size and weight limits. The report defines a...

A November 9, 2018 report from TRB's Research and Technology Coordinating Committee (RTCC) to the U.S. Federal Highway Administration (FHWA) provides the committee’s reaction to the methods used by the Office of Research, Development, and Technology (RD&T) for ensuring strategic research, evaluating the impact of its research projects, and developing and leveraging research and technology p...

TRB's Airport Cooperative Research Program (ACRP) latest Impacts on Practice explores the impact ACRP Synthesis 39 : Airport Wildlife Population Management has had on integrated wildlife management plans at airports. A wildlife biologist at Orlando International Airport utilized this report to develop a holistic approach to mitigating bird strikes with a specific species of heron that thrives i...

TRB's E-Circular 235: Glossary of Transportation Construction Quality Assurance Terms: Seventh Edition contains common terms and accepted practice in transportation construction quality assurance terminology. Transportation construction quality assurance (QA), like many other specialized subject areas, has its own unique language containing numerous technical terms or expressions having very sp...

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 August 24, 2018 report describes the committee’s understanding of the Strategic Transit Automation Research (STAR) Plan and provides advice to FTA regarding this plan. TRAC, an interdi...