TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 515: Practices for Preventing Roadway Departures identifies and summarizes practices being used by state departments of transportation (DOTs) to prevent roadway departure crashes and to identify the data-driven advantages and disadvantages of these practices. More than half of all traffic fatalities result from roadway departure crashes. This type of crash occurs after a vehicle crosses an edge line or centerline or otherwise leaves th...

TRB's National Cooperative Highway Research Program (NCHRP) has released a pre-publication, non-edited version of Synthesis 527: Resilience in Transportation Planning, Engineering, Management, Policy, and Administration. The report documents resilience efforts and how they are organized, understood, and implemented within transportation agencies’ core functions and services. Core functions and services include planning, engineering, construction, maintenance, operations, and administration. The informati...

Transportation Research Circular 233: Applying Census Data for Transportation explores a conference held on November 14-16, 2017, in Kansas City, Missouri that focused on the use of census data for transportation applications. The conference provided a forum for participants to share experiences with the use of Census data, including new techniques for integrating different data sets for use in transportation planning and decision making. The conference further provided an opportunity for participants to...

TRB's Transit Cooperative Research Program (TCRP) has released a pre-publication, non-edited version of Research Report 201: Understanding Changes in Demographics, Preferences, and Markets for Public Transportation. The report explores how changes in demographics, traveler preferences, and markets for public transportation affect transit ridership now and in the future. The report explores how an individual’s demographics affect their longterm values, their current attitudes, and the type of neighborhood...

TRB's Transportation Research Record: Journal of the Transportation Research Board has released more than 200 papers from the 2018 TRB Annual Meeting. Enhancements to the journal include:  Articles published much closer to final acceptance A new user interface for the journal Article-level metrics  Full-text HTML to enhance discovery of the research Interactive proof markup for authors LaTeX support for complex math articles (LaTeX is a typesetting system that includes features designed for the...

TRB's Transit Cooperative Research Program (TCRP) Synthesis 135: ADA Paratransit Service Models provides information about current Americans with Disabilities Act (ADA) compliant paratransit service models and the underlying reasons why specific transit agencies have opted to keep or change their service model. ADA paratransit demand continues to grow while resources are dwindling. For that reason, transit agencies nationwide are exploring service models to more effectively meet present and future demand...

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 Protocol Combinations to Detect Asphalt Mixture Damage Safety Evaluation of the SafetyEdge Treatment for Pavement ...

TRB's Transit Cooperative Research Program (TCRP) has released a pre-publication, non-edited, draft version of Research Report 195: Broadening Understanding of the Interplay Between Public Transit, Shared Mobility, and Personal Automobiles. The study broadens the understanding of the interplay among emerging and established modes of transportation. Built upon the findings of TCRP Research Report 188 , this report explores how shared modes—and ridesourcing companies in particular—interact with the use of ...

A featured article in the November-December 2017 issue of the TR News explores the International Design and Deliverability Competition to develop a redesign plan for New York City's Port Authority Bus Terminal. This bus terminal is the world's busiest, and the author describes the challenges and opportunities in the redesign process. 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 transportation. It also includes b...

TRB's National Cooperative Highway Research Program (NCHRP) Web-Only Document 237: Environmental Justice Analyses When Considering Toll Implementation or Rate Changes—Final Report presents information gathered in the development of NCHRP Research Report 860 : Assessing the Environmental Justice Effects of Toll Implementation or Rate Changes: Guidebook and Toolbox. This web-only document summarizes the technical research and presents the technical memorandum that documents the literature, existing case st...