The TRB National Cooperative Highway Research Program's NCHRP Synthesis 551: Highway Hydraulic Engineering State of Practice documents significant changes in highway hydraulic engineering practices implemented by state departments of transportation (DOTs) over the past decade. The synthesis focuses on eight subtopics of highway hydraulic engineering: roadway drainage; culvert aquatic organism p...

The TRB Centennial Book is available for purchase in ebook or print format. In The Transportation Research Board, 1920–2020: Everyone Interested Is Invited , author Sarah Jo Peterson tells the story of how people and institutions created and have continued to shape TRB. In a compelling narrative accompanied by more than 150 images exploring the history of transportation and research, she argues...

Compost Blankets for Erosion Control and Vegetation Establishment , released by the Massachusetts Department of Transportation

Scaling loose rock from highway rock slopes is an important aspect of improving rock slope safety in mountainous areas, according to input from 42 state departments of transportation and two regional divisions of the Office of Federal Lands Highway. The TRB National Cooperative Highway Research Program's NCHRP Synthesis 555: Estimating and Contracting Rock Slope Scaling Adjacent to Highways doc...

Highway Rock Cut Inventory and Failure Potential, Allegany County, Maryland , released by the Maryland Department of Transportation

When an intense wildfire occurs, the heat changes the chemical and biological makeup of the soil, impacting the microbial environment and increasing erosion risks that can propagate to devastating mudslides and debris flows. The TRB Highway Innovations Deserving Exploratory Analysis Program's IDEA Final Report 200: Rapid Rehabilitation of Highway Slopes Using Seeded Microbial Bio-Cement  a...

Issue Number 326 of TR News magazine is available in full to subscribers. Here is a sample from the issue: a 14-page photo collage of the 99th Transportation Research Board Annual Meeting from January 12–16, 2020 in Washington, D.C. Do you see yourself in any of the photos?

Geophysical methods provide a means to rapidly and economically characterize subsurface conditions and infer soil properties over a spatial extent that is not possible with conventional methods. The TRB National Cooperative Highway Research Program's NCHRP Synthesis 547: Advancements in Use of Geophysical Methods for Transportation Projects evaluates the current state of practice in the use of ...

The March-April 2020 issue of TR News (#326) - including a cover feature on TRB's "century of progress and foundation for the future" of transportation research - is available in hard copy and digital copy for subscribers. For those who are not subscribers, the table of contents is available. Other feature articles in the issue include ones on whether research processes can keep up, accessible ...

Topics in the November–December 2019 issue of TR News include an analysis of the #TRBAM Annual Meeting Twitter hashtag to understand communication dynamics; climate change, a critical transportation issue; assessing, marking, and coding highway structures in emergencies; and more. This issue also kicks off the magazine’s yearlong celebration of the 100th anniversary of TRB, which will include t...