TRB’s Conference Proceedings on the Web 14: Sustainable Energy and Transportation Strategies, Research, and Data includes summaries of plenary session presentations that were made during a November 2012 conference in Washington, D.C. The conference explored potential research needed to further advance the development of alternatives to petroleum-based transportation and to lower greenhouse gas emissions.

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2389 consists of seven papers that explore driver yielding behavior to pedestrians; emissions estimation at multilane roundabouts; the safety effects of converting intersections to roundabouts; predictions of capacity for roundabouts; the influence of sight distance on crash rates and operating speeds; roundabout critical headway measurement; and driver behavior analysis and trajectory interpretation at roundabouts.

TRB’s Airport Cooperative Research Program (ACRP) Synthesis 50: Effective Cooperation Among Airports and Local and Regional Emergency Management Agencies for Disaster Preparedness and Response focuses on how airports and their emergency management partners establish and sustain effective working relationships, and methods of identifying problems and rebuilding damaged relationships. The report is designed to provide airports and their emergency response allies access to a full range of policies, programs...

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2373 consists of 14 papers that explore healing-based fatigue endurance limits for hot-mix asphalt; fatigue damage responses of asphalt concrete materials; cyclic viscoplastic responses of asphalt concrete; a calibration testing protocol for the permanent deformation model of asphalt concrete; a comparison of uniaxial and four-point bending fatigue tests for asphalt mixtures; and a modified Paris’ law to predict entir...

TRB’s Airport Cooperative Research Program (ACRP) Report 104: Defining and Measuring Aircraft Delay and Airport Capacity Thresholds offers guidance to help airports understand, select, calculate, and report measures of delay and capacity. The report describes common metrics, identifies data sources, recommends metrics based on an airport’s needs, and suggests ways to potentially improve metrics.

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2387 consists of 17 papers that explore bicycle-specific traffic signals; automated collection of cyclist data; the role of the bicycle in the limitation of transportation poverty in the Netherlands; passing events in mixed bicycle traffic; driver and cyclist education materials; and station-level forecasting of bikesharing ridership. This issue of the TRR also examines bicycle infrastructure quality-of-service metric...

TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 452: State Department of Transportation Fleet Replacement Management Practices explores the current state of the practice regarding fleet replacement management and financing methods by state departments of transportation. The report also includes a discussion of the perceived strengths and weaknesses of different management and financing methods.

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

Since September 11, 2001, 145 security-, emergency management-, and infrastructure protection-related planning and implementation projects have been initiated through programs managed by the Transportation Research Board (TRB). One hundred eleven of these projects have been completed; 24 projects are in progress; and 10 projects have contracts pending or are currently in development. This report, updated monthly, provides information on about $20 million worth of completed and ongoing TRB security resear...

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2351 consists of 18 papers that explore transit fleet resource allocation; benchmarking disaggregate customer satisfaction scores of bus operators; statistical equivalence of onboard versus online surveys of transit customers; and the operational performance of public transportation agencies. This issue of the TRR also examines intraurban rail access; the measurement of train delay impacts; the potential of low-freque...