TRB's Transit Cooperative Research Program (TCRP) Research Report 193: Tools and Strategies for Eliminating Assaults Against Transit Operators, Volume 2: User Guide  provides potential countermeasures and strategies to prevent or mitigate assaults against transit operators. The User Guide includes an operator assault risk management toolbox developed to support transit agencies in their ef...

TRB's Transit Cooperative Research Program (TCRP) Research Report 193: Tools and Strategies for Eliminating Assaults Against Transit Operators, Volume 1: Research Overview provides the materials and methodology used to produce potential countermeasures and strategies to prevent or mitigate assaults against transit operators. Transit industry policies, practices, and operating procedures related...

The National Academies of Sciences, Engineering, and Medicine has released its proceedings of a workshop hosted in January 2018 that explores best practices and lessons learned from other high-risk, high-reliability industries for the benefit of the research community and of citizens, industry practitioners, decision makers, and officials addressing safety in the offshore oil industry. Since th...

TRB's E-Circular 232: Automated Vehicle Symposium 2017: Summary of a Symposium highlights the themes from an event that took place on July 11–13, 2017 in San Francisco, California. The event explored the development, testing, building, and deployment of autonomous vehicles (AVs). The 2017 AVS provided the opportunity for communication, collaboration, and information sharing on a wide range of t...

TRB's National Cooperative Highway Research Program (NCHRP) Research Report 875: Guidance for Evaluating the Safety Impacts of Intersection Sight Distance is a resource for practitioners involved in the planning, design, operations, and traffic safety management of stop-controlled intersections. It provides information on how to estimate the effect of intersection sight distance (ISD) on crash ...

TRB's National Cooperative Highway Research Program ( NCHRP) Web-Only Document 228 : Safety Impacts of Intersection Sight Distance documents the methodology and presents the results from NCHRP Research Report 875 : Guidance for Evaluating the Safety Impacts of Intersection Sight Distance. It provides  the underlying research on estimating the safety effects of intersection sight distance (...

The National Academies of Sciences, Engineering, and Medicine has released a report that identifies challenges to establishing a real-time system-wide safety assurance (RSSA) system and the high-priority research that should be implemented by the National Aeronautics and Space Administration (NASA) and other interested parties in government, industry, and academia to expedite development of suc...

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...

TR Circular E-C229: 10th SHRP 2 Safety Data Symposium: From Analysis to Results explores the October 6, 2017 symposium that served as a forum for the exchange of ideas about uses and methods for the SHRP 2 Safety Data Program and identified lessons learned from working with the data. This symposium focused on safety data analysis, results, and applications to help researchers and practitioners ...

The full edition of the September-October 2017 TR News magazine is now available. Transportation systems' resilience is the theme of feature articles in this issue. Authors describe lessons learned in planning, engineering, and operations management with regards to resilience; discuss supply chain business continuity; identify techniques for evacuation and emergency transportation; examine the ...

TRB's Special Report 325: Safely Transporting Hazardous Liquids and Gases in a Changing U.S. Energy Landscape reviews how the pipeline, rail, and barge industries have fared in safely transporting the increased volumes of domestically produced energy liquids and gases. The report, sponsored by TRB, reviews the safety record of the three transportation modes in moving these hazardous shipments a...

TRB Special Report 324: Designing Safety Regulations for High-Hazard Industries, examines key factors relevant to government safety regulators when choosing among regulatory design types, particularly for preventing low-frequency, high consequence events. In such contexts, safety regulations are often scrutinized after an incident, but their effectiveness can be inherently difficult to assess w...

The National Academies of Sciences, Engineering, and Medicine has released a report that examines which interventions (programs, systems, and policies) are most promising to prevent injuries and death from alcohol-impaired driving, the barriers to action and approaches to overcome them, and which interventions need to be changed or adopted. This report makes broad-reaching recommendations that ...

The National Academies of Sciences, Engineering, and Medicine has released a report that envisions an in-time aviation safety management system (IASMS) that can collect data on the status of aircraft, air traffic management systems, airports, and weather, and then assess the data second by second, minute by minute, and hour by hour to detect or predict elevated risks quickly. Additionally, the ...

TRB's National Cooperative Highway Research Program (NCHRP) Research Report 869: Estimating the Safety Effects of Work Zone Characteristics and Countermeasures: A Guidebook provides practitioners who develop phasing and staging plans for temporary traffic control through work zones with guidance to evaluate the safety impacts of their plan decisions. There is limited data on work zone crashes a...

TRB's National Cooperative Highway Research Program (NCHRP) W eb-Only Document 240: Analysis of Work Zone Crash Characteristics and Countermeasures documents the research results of multiple analyses focused on developing an improved understanding of work zone crash characteristics and countermeasure effectiveness used to produce NCHRP Research Report 869 : Estimating the Safety Effects of Work...

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2659 consists of 24 papers that explore statistical methods and safety data, including: Methodology to Backcalculate Individual Speed Data Originally Aggregated by Road Detectors Traffic Conflict–Based Before–After Study with Use of Comparison Groups and the Empirical Bayes Method Developing Macrolevel Colli...

TRB's Transit Innovations Deserving Exploratory Analysis (IDEA) Program Final Report 83: Track Circuit Monitoring Tool Standardization and Deployment at Chicago Transit Authority explores the transformation of a tool used by the Washington Metropolitan Area Transit Authority into an independent stand-alone track circuit integrity monitoring system to help identify safety critical failure condit...

TRB's National Cooperative Highway Research Program (NCHRP) latest Research Topic Highlights explores solutions for roadway tunnels. It summarizes the results of several research projects that has framed the problems and mitigation strategies associated with tunnels. Included are summaries of tunnel inspection, rehabilitation, and preservation; tunnel design; and tunnel safety and security.

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 ...

This annual report presents a summary of progress on investigations conducted as part of the Rail Safety Innovations Deserving Exploratory Analysis (Rail Safety IDEA) program sponsored by the Federal Railroad Administration and overseen by the Transportation Safety IDEA Program Committee. The Rail Safety IDEA program provides funding for projects that promote innovative approaches to improving ...

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2662 consists of 19 papers that explore bicycle transportation, including: Comparing Crowdsourced Near-Miss and Collision Cycling Data and Official Bike Safety Reporting Where Do Bikeshare Bikes Actually Go? Analysis of Capital Bikeshare Trips with GPS Data Bicycle Backlash: Qualitative Examination of Aggres...

A featured article in the September-October issue of the TR News explores the current practices that are used to prepare for and to recover from disruptions quickly, to manage highly varied stakeholder groups, and to strengthen performance after a disruptive event. The article identifies an emerging framework for community resilience governance and decision making before and after disruptions. ...

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 Transportation Research Record: Journal of the Transportation Research Board, No. 2616 consists of 12 papers that explore traffic operations, including: Operating Speed on a Buffer-Separated Managed Lane Effect of Geometric Factors on Lateral Position of Vehicles in Freeway Buffer-Separated Managed Lanes Queue Length Estimation for Freeway Facilities: Based on Combination of Point Traffic...

TRB's Airport Cooperative Research Program (ACRP) Legal Research Digest 33: Overview of Airport Duties and Standards of Care in Airfield Accident Cases provides an overview of the legal duties and standards of care that may create liability when operating a public airfield. It discusses negligence principles and reviews duties and standards of care in an airfield accident context, including the...

TRB's Transit Innovations Deserving Exploratory Analysis (IDEA) Final Report 80: Enhancing Safety and Security of Transit Systems using Computer Vision explores the development of a fatigue monitoring system that detects distraction and fatigue in truck drivers. The report examines a computer vision technology that is based on a single camera and uses deformable model technology to track the ge...

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 Transportation Research Record: Journal of the Transportation Research Board, No. 2661 consists of 14 papers that explore pedestrian issues, including: Comparison of Analytical Methods on Staged Pedestrian Crossings at Crosswalks with a Rectangular Rapid Flashing Beacon Using Embodied Videos of Walking Interviews in Walkability Assessment Comparison of Time-Proximity and Evasive Action Co...

TRB's National Cooperative Highway Research Program (NCHRP) Web-Only Document 239: Impacts of Laws and Regulations on CV and AV Technology Introduction in Transit Operations explores the potential barriers imposed by operating policies, agency regulations, and governmental laws relative to the transit environment. Without adjustment, the combination of new technology with old rules could result...