The May-June 2017 edition of the TR News 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 transpo...

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2617 consists of 11 papers that explore visibility and work zone traffic control, including: Field Evaluation of Pilot Vehicles and Portable Traffic Control Signals With and Without a Flagger Effects of Full Matrix Color Changeable Message Signs on Legibility and Roadway Hazard Visibility Influence of Truck-...

TRB has released its requirements for submitting papers for presentation at the 2018 TRB Annual Meeting and/or publication in the Transportation Research Record: Journal of the Transportation Research Board . This guide covers the organization and formatting of manuscripts for peer review and for publication, as well as instructions for submission. Papers that do not follow the guidelines will ...

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2613 consists of 10 papers that explore traffic and equipment maintenance, especially with regards to weather, including: Use of Calorimetry to Measure Ice-Melting Capacity Investigating Safety Effectiveness of Wyoming Snow Fence Installations Along a Rural Mountainous Freeway Relating Public Opinions of Roa...

A featured article in the March-April 2017 issue of the TR News highlights photos from the 96th TRB Annual Meeting, January 8-12, 2017. The article features photographs of sessions, workshops, committee meetings, and awards. Bruce M. Smith, Apperson Crump PLC, and General Counsel, Memphis Area Transit Authority, delivered the delivered the 2017 Thomas B. Deen Distinguished Lecture on “Ethical I...

A featured article in the March-April 2017 issue of the TR News highlights photos from the 96th TRB Annual Meeting, January 8-12, 2017. The article features photographs of sessions, workshops, committee meetings, and awards. Bruce M. Smith, Apperson Crump PLC, and General Counsel, Memphis Area Transit Authority, delivered the delivered the 2017 Thomas B. Deen Distinguished Lecture on “Ethical I...

TRB's Transit Cooperative Research Program (TCRP) Synthesis 129: Managing Extreme Weather at Bus Stops documents current practices of transit systems to determine methods and procedures used for maintaining transit stops and associated infrastructure during and following such weather events. This synthesis provides a state-of-the-practice report on transit systems' management of extreme weather...

TRB's National Cooperative Highway Research Program (NCHRP) Research Report 848: Inspection Guidelines for Bridge Post-Tensioning and Stay Cable Systems Using NDE Methods describe nondestructive evaluation (NDE) methods for assessing the condition of in-service post-tensioning and stay cable systems. The NDE methods outlined in this report explore different condition assessments, including corr...

TRB's National Cooperative Highway Research Program (NCHRP) Innovations Deserving Exploratory Analysis (IDEA) Project 176: Contactless Electrode for Fast Survey of Concrete Reinforcement Corrosion explores the development of an alternative, fast responding, noncontacting electrode for rapid assessment of corrosion condition of bridges. The method requires no surface pretreatment and avoids much...

TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 502: Practices for Establishing Contract Completion Dates for Highway Projects documents current methodologies and procedures used by state transportation agencies to estimate contract time for various highway project delivery methods. Establishing contract time is an important part of the highway project development process ...

TRB's National Cooperative Freight Research Program (NCFRP) Research Report 37: Using Commodity Flow Survey Microdata and Other Establishment Data to Estimate the Generation of Freight, Freight Trips, and Service Trips: Guidebook provides policy makers with improved establishment-level models that estimate the Freight Trip Generation (FTG), the number of vehicle trips produced and attracted at ...

TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 505: Current Practices and Guidelines for the Reuse of Bridge Foundations provides guidance on reusing bridge foundations, a sustainable option for many bridge replacement and rehabilitation efforts that can result in time and cost savings as well as reduced mobility impacts and environmental benefits. However, foundation reu...

TRB's National Cooperative Highway Research Program (NCHRP) Research Report 837: Performance-Related Specifications for Emulsified Asphaltic Binders Used in Preservation Surface Treatments presents emulsion performance grade (EPG) specifications for asphalt emulsions used in three pavement preservation surface treatments (PSTs): chip seal, microsurfacing, and spray seals. These EPG specificatio...

A featured article in the November-December 2016 issue of the TR News highlights the challenges of freight transportation with regards to meeting new emissions standards. 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 com...

TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 501: Pavement Management Systems: Putting Data to Work documents current pavement management practices in state and provincial transportation agencies. The report focuses on the use of pavement management analysis results for resource allocation, determining treatment cost-effectiveness, program development, and communication...

TRB's National Cooperative Highway Research Program (NCHRP) Report 820: Framework for a Pavement-Maintenance Database System provides a uniform format for collecting, reporting, and storing information on pavement-maintenance actions. The framework may facilitate usage of the data in cost-benefit analyses, evaluation of the effects of maintenance on pavement performance, selection of maintenanc...

TRB's National Cooperative Highway Research Program (NCHRP) Innovations Deserving Exploratory Analysis (IDEA) Report 157: Development of an Intrinsically Conducting Polymer-Based Low-Cost, Heavy-Duty, and Environmentally-Friendly Coating System for Corrosion Protection of Structural Steels explores the use of Intrinsically Conducting Polymer for developing a more cost-effective, heavy-duty, and...

TRB's Airport Cooperative Research Program (ACRP) latest Impacts on Practice explores how Manchester-Boston Regional Airport (MHT) used  ACRP Report 117 : Airport Escalators and Moving Walkways—Cost-Savings and Energy Reduction Technologies to assist with the decision to install energy-saving variable demand/variable speed motors on the moving walkways and escalators in the airport. MHT al...

TRB's E-Circular 216: International Experience and Perspective of Pavement Texture Measurements and Evaluation includes a synopsis of five presentations at the workshop “International Experience and Perspective of Pavement Texture Measurements and Evaluation” held at TRB's 94th Annual Meeting, January 11-15, 2015, in Washington, D.C. The presentations explore methods used in the United States, ...

TRB's E-Circular 215: Roadside Safety Design and Devices: International Workshop summarizes the presentations from a meeting hosted by the International Research Subcommittee of the TRB Roadside Safety Design Committee in Melbourne, Australia, on March 26, 2015. The publication explores assessment practices, work zone safety, safe systems and roadsides, hardware development and testing, and mot...

TRB's National Cooperative Highway Research Program (NCHRP) Innovations Deserving Exploratory Analysis (IDEA) Report 171: Producing a Sustainable, Bio-Based Alternative to Petroleum-Based Asphalt Binder explores adding bio-binder to crumb-rubber-modified (CRM) asphalt to enhance its low-temperature rheological properties while improving workability and reducing phase separation. The application...

TRB’s Airport Cooperative Research Program (ACRP) has updated Report 45: Optimizing the Use of Aircraft Deicing and Anti-Icing Fluids provides guidance on procedures and technologies designed to help reduce the use of aircraft deicing and anti-icing fluids (ADAF) while maintaining safe aircraft operations across the wide range of winter weather conditions found in the United States and Canada. ...

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2555 consists of 14 papers that explore visibility and work zone traffic control, including: What Role Do Precrash Driver Actions Play in Work Zone Crashes? Application of Hierarchical Models to Crash Data Traffic Control at Access Points Within Alternating One-Way Operations Model Development for Use of Por...

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2551 consists of 16 papers that explore traffic and equipment maintenance, especially with regards to weather, including: Accuracy of Ice Melting Capacity Tests: Review of Melting Data for Sodium Chloride Superhydrophobic Coatings on Asphalt Concrete Surfaces: Toward Smart Solutions for Winter Pavement Maint...

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2550 consists of 16 papers addressing maintenance and preservation issues, including: Effect of Binder Modification on the Performance of an Ultra-Thin Overlay Pavement Preservation Strategy Critical Assessment of the Long-Term Performance and Cost-Effectiveness of a New Pavement Preservation Method: Micromi...

TRB's National Cooperative Highway Research Program (NCHRP) Report 822: Evaluation and Assessment of Environmentally Sensitive Stream Bank Protection Measures evaluates and assesses existing guidelines for the design, installation, monitoring, and maintenance of environmentally sensitive stream bank stabilization and protection measures, and develops quantitative engineering design guidance for...

A featured article in the March-April 2016 issue of the TR News highlights photos from the 95th TRB Annual Meeting, January 10-14, 2016. The article features photographs of sessions, workshops, committee meetings, and awards. Dr. Hani Mahmassani, William A. Patterson Distinguished Chair in Transportation and professor, Northwestern University, and Director, Northwestern University Transportatio...

TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 493: Practices for High-Tension Cable Barriers reports on the current state of the practice for high-tension cable barriers (HTCB) used in the medians of access-controlled roadways in the United States. Information on high-tension cable barrier systems related to state agency specifications, special provisions, design standar...

TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 490: Practice of Rumble Strips and Rumble Stripes documents current practices used by states installing rumble strips and rumble stripes. The report details and explores variations in state highway agency practices in terms of design, criteria, and locations for installation, maintenance, perceived benefits, communication of ...

TRB's National Cooperative Highway Research Program (NCHRP) Report 823: Guidelines for Certification and Management of Flexible Rockfall Protection Systems provides advice on rockfall fence systems for transportation agencies. It also outlines data that are needed to evaluate the results of rockfall fence systems tested using the procedure recommended for acceptance. Finally, the report present...