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) Legal Research Digest 52: Legal Implications of Video Surveillance on Transit Systems explores the use of video surveilance systems on buses, trains, and stations. The widespread use of such video surveillance systems has generated numerous legal issues, such as a system’s ability to utilize video to discipline union and non-union employees, safety issues associated with such use, public access to such video, and retention policies regarding video, among ...

TRB’s Airport Cooperative Research Program (ACRP) Research Results Digest 27: Legal Aspects of Airport Programs - An Update is a digest of the background and status of ACRP Project 11-01, Legal Aspects of Airport Programs. During the first 11 years of ACRP Project 11-01, there have been almost 50 topics selected for legal research in broad areas of interest to the airport legal community. Thirty-three ACRP Legal Research Digests have been published to date and are available through the TRB website.

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 by research programs to promote and document the implementation of results, and offer insights on technology tra...

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 and practice in all modes of transportation. It also includes brief news items of interest to the transportation...

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 extent to which federal preemption may apply. The digest concludes with a section discussing many types of airf...

TRB's Airport Cooperative Research Program (ACRP) Legal Research Digest 32: Evolving Law on Airport Implications by Unmanned Aerial Systems provides guidance to enhance understanding of the basic legal and operational issues presented by civil unmanned aerial systems (UAS), and evaluates best practices for managing these issues. The digest covers background on UAS uses, applications, regulations, and definitions, leading to operations within the National Airspace System (NAS), the issues of federalism as...

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 efficiency of laboratory specimen fabrication by allowing the extraction of multiple test specimens per gyratory-...

TRB's National Cooperative Highway Research Program (NCHRP) Legal Research Digest 75: Legal Requirements for State Departments of Transportation Agency Participation in Conservation Plans describes Habitat Conservation Plans (HCPs) and their relation to wetland mitigation banking, regional planning, and the National Environmental Policy Act (NEPA). Purchase and sale of wetland banks, habitat, and stream credits may be characterized as real property or personal property transactions. This digest covers me...

TRB’s Airport Cooperative Research Program (ACRP) Legal Research Digest (LRD) 21 is a compilation of U.S. Department of Transportation (DOT) and U.S. Federal Aviation Administration (FAA) airport legal determinations and opinion letters through December 31, 2012. This tool has recently been converted into a WebResource . Disclaimer - This software is offered as is, without warranty or promise of support of any kind either expressed or implied. Under no circumstance will the National Academy of Sciences o...