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 e...

The Ohio Department of Transportation (ODOT) has released a report that identifies and evaluates vegetation management practices ODOT Districts can implement to increase efficiency and cost-effectiveness of roadside maintenance activities that improve worker safety, foster safe highway use by the traveling public, and improve roadside aesthetics. The report includes arboricultural training and ...

The Institute for Transportation at Iowa State University has released a report that examines the geological factors responsible for the results of the Iowa Pore Index (IPI) test used by several Midwestern state departments of transportation to rapidly and nondestructively determine the macropore-to-micropore ratio of coarse aggregate. The research may extend the IPI’s application to other stat...

The Ohio Department of Transportation (ODOT) has released a report that determines the effectiveness of multiple liquid deicers available on the market, including the time it takes the deicer to work as well as the how long the deicers will continue to work after applied to the roadways. The research provides a potentially cost-effective and environmentally friendly option instead of salt, the ...

The American Public Transportation Association has released a report that provides a framework for assessing what is commonly referred to as the public “return on investment” (ROI) associated with high-speed and intercity passenger rail (HS&IPR) projects. The research considers the full range of local community effects, regional connectivity and global competitiveness effects, and broader c...

The Minnesota Department of Transportation (MnDOT) has released a report that summarizes non-chloride based deicers available on the market at this time, including acetate, formate, glycol, and succinate based deicing products. The report explores the deicers’ feasibility for use as alternatives to chloride based deicers, and identifies next steps to determine if a non-chloride based deicer is ...

The National Center for Sustainable Transportation at the University of California, Davis has released a report that compares and evaluates vehicle miles traveled (VMT) estimation tools across a sample of land use projects. The researchers compare the results from different tools for each project, consider the applicability of methods in particular contexts and for different types of projects, ...

The International Council on Clean Transportation (ICCT) has released a report that supplements a set of technology-neutral cost curves published by the ICCT in November 2016 that describe the cost of carbon dioxide (CO2) reduction technology as applied to the European Union (EU) passenger car and light commercial vehicle (LCV) fleet in the 2025–2030 time frame. The research quantifies the exte...

TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2627 consists of 11 papers that explore air quality in transportation, including: In-Use Emissions from 2010-Technology Heavy-Duty Trucks: Impact on Air Quality Planning in California Evaluation of Odd–Even Day Traffic Restriction Experiments in Delhi, India Real-World Freeway and Ramp Activity and Emissions...

The Washington State Department of Transportation has released a manual that aims to establish a common basis for consistent roadside management decisions across the state. It also provides references for previously unpublished material related to roadside management, including planning, design, construction, and maintenance. Effective roadside management may result in improved road function, i...