The Florida Department of Transportation has released a report that explores the development of a test to evaluate the healing behavior of a dense- and open-graded asphalt mixture.

TRB’s National Cooperative Highway Research Program (NCHRP) Report 718: Fatigue Loading and Design Methodology for High-Mast Lighting Towers provides criteria for the fatigue design of high-mast lighting towers. The report also includes a series of proposed revisions with associated commentary to the fatigue design provisions of the American Association of State Highway and Transportation Offic...

This fall, TRB will release Rockfall: Characterization and Control, which will address rockfall hazard identification and evaluation, investigation process, mitigation options, and maintenance and management programs. The 400 page publication will include a DVD with video clips of rockfall field tests and several historical movies documenting rockfall field activities. Because of the expec...

The Utah Department of Transportation has released a report that explores monitoring concrete precast panels for bridge decks that are reinforced with Glass Fiber Reinforced Polymer (GFRP) bars.

The New Zealand Transport Agency has released a report that explores the relationship between the dimensions of audio tactile profiled road-markings and the noise and vibration generated inside a vehicle when it traverses the road-markings.

The Colorado Department of Transportation has released a report that investigates the hydraulic efficiencies of bar inlets, vane inlets, and curb-opening inlets for street and roadway drainage.

The U.S. Federal Highway Administration has released a report that provides information for the planning and hydraulic design of culverts. The publication updates Hydraulic Design Series Number 5 and adds new information on software solutions, aquatic organism passage, culvert assessment, and culvert repair and rehabilitation.

TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 432: Recent Roadway Geometric Design Research for Improved Safety and Operations reviews and summarizes roadway geometric design literature completed and published from 2001 through early 2011, particularly research that identified impacts on safety and operations. The report is structured to correspond to chapters in th...

The Oregon Department of Transportation has released a report that evaluates laboratory tests on ten full-size reinforced concrete girders, representative of in-situ bridge members, to determine the performance of near surface mounted-carbon fiber reinforced polymer (NSM-CFRP) retrofitting for shear strengthening.

TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 428: Practices and Procedures for Site-Specific Evaluations of Earthquake Ground Motions identifies and describes current practice and available methods for evaluating the influence of local ground conditions on earthquake design ground motions on a site-specific basis. The report focuses on evaluating the response of soil de...