The National Academies of Sciences, Engineering, and Medicine has released a report that summarizes the rationale and need for supporting a comprehensive U.S. research program in atmospheric chemistry; comments on the broad trends in laboratory, field, satellite, and modeling studies of atmospheric chemistry; determines the priority areas of research for advancing the basic science of atmospheric chemistry; and identifies the highest priority needs for improvements in the research infrastructure to addre...

TRB's Airport Cooperative Research Program (ACRP) Report 159: Pavement Maintenance Guidelines for General Aviation Airport Management provides guidance to general aviation airport managers in determining the most cost-efficient and appropriate preventative maintenance solution to common pavement issues. In addition to the guidebook, two additional products were developed. The Airport Pavement Maintenance Recommendation Tool is an interactive tool that will assist the user in identifying pavement issues. ...

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2595 consists of 15 papers that explore informational technology, geospatial information, and advanced computing, including: Genetic Algorithm and Regression-Based Model for Analyzing Fare Payment Structure and Transit Dwell Time Estimation of Origin and Destination Information from Bluetooth and Wi-Fi Sensing for Transit Pothole Detection Based on the Features of Intensity and Motion Multiresolution Change Analysis F...

Beyond Compliance: Strengthening the Safety Culture of the Offshore Oil and Gas Industry summarizes recommendations to industry and regulators to strengthen and sustain the safety culture of the offshore oil and gas industry. The committee that prepared the report addresses conceptual challenges in defining safety culture, and discusses the empirical support for the safety culture definition offered by the Bureau of Safety and Environmental Enforcement, the nine characteristics or elements of a robust sa...

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2575 consists of 22 papers that explore asphalt materials and mixtures, including: Performance of a Highly Polymer-Modified Asphalt Binder Test Section at the National Center for Asphalt Technology Pavement Test Track Using Polymer Modification and Rejuvenators to Improve the Performance of High Reclaimed Asphalt Pavement Mixtures Dynamic Modulus of Recycled Pavement Mixtures Cold In-Place Recycling Moisture-Related D...

TRB's Transit Cooperative Research Program (TCRP) Research Report 187: Livable Transit Corridors: Methods, Metrics, and Strategies presents practical planning and implementation strategies to enhance livability in transit corridors. This Handbook provides a resource for planning practitioners, policy makers, and other stakeholders to measure, understand, and improve transit corridor livability. The handbook provides a definition of transit corridor livability and a set of methods, metrics, and strategies...

The National Academies of Sciences, Engineering, and Medicine has released Commercial Aircraft Propulsion and Energy Systems Research, which develops a national research agenda for reducing CO2 emissions from commercial aviation. This report focuses on propulsion and energy technologies for reducing carbon emissions from large, commercial aircraft— single-aisle and twin-aisle aircraft that carry 100 or more passengers—because such aircraft account for more than 90 percent of global emissions from commerc...

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2546 consists of 16 papers that explore safety management, school transportation, and safety workforce development, including: Operational Schedule Flexibility and Infrastructure Investment: Capacity Trade-Off on Single-Track Railways Heterogeneous Valuation of Quality Dimensions of Railway Freight Service by Chinese Shippers: Choice-Based Conjoint Analysis Washington State Short-Line Railroads: Case Study in Meeting ...

TRB's Transit Cooperative Research Program (TCRP) Report 188: Shared Mobility and the Transformation of Public Transit examines the relationship of public transportation (including paratransit and demand-responsive services) to shared modes, including bikesharing, carsharing, microtransit, and ridesourcing services provided by companies such as Uber and Lyft. The report also explores issues and opportunities and challenges as they relate to technology-enabled mobility services, including suggesting ways ...

TRB's Airport Cooperative Research Program (ACRP) Synthesis 77: Airport Sustainability Practices compiles information about airport sustainability practices and adds them to the Sustainable Aviation Guidance Alliance ( SAGA ) website. The SAGA website was developed to assist airport operators in developing sustainability programs and provide guidance to those who have new data to input. The website contains entries on more than 900 sustainability practices that were developed by SAGA’s initial stakeholde...