The impact of life-cycle emissions on greenhouse gases (GHG) is evaluated in Life Cycle-Based Policies Are Required to Achieve Emissions Goals from Light-Duty Vehicles , a report from the National Center for Sustainable Transportation at the University of California at Davis. GHG emissions come from vehicle production as well as vehicle operations, and this report identifies potential gaps in policies that may not address the entire life-cycle of a vehicle. The report is available for no fee after loggin...

Renewable natural gas (RNG) production in California is evaluated in Renewable Natural Gas Research Center Project , a report from the National Center for Sustainable Transportation at the University of California at Davis. RNG may help California meet greenhouse gas reduction and renewable energy targets. The report is available for no fee after logging onto the site.

Reflective pavement markers are analyzed in Investigating the Optimum Performance of Snowplowable Reflective Pavement Markers , a report from the Illinois Center for Transportation at the University of Illinois at Urbana-Champaign. This report analyzes the performance of traditional cast-iron and plastic pavement markers on both asphalt and concrete pavements.

Factors that may affect personal mobility are explored in Insights into Future Mobility , a report from the Massachusetts Institute of Technology. The goal of this report is to navigate disruptions and changes that lie ahead and to determine how factors surrounding personal mobility may play a role in shaping its future.

A methodology to improve tribal roadway safety is developed in Regional Implementation of Tribal Transportation Safety Program: Yankton Sioux Tribe Roadway Safety Improvement Program , a report from the Upper Great Plains Transportation Institute at North Dakota State University. This report identifies how three tribes in North and South Dakota were affected by the program.

A methodology to improve tribal roadway safety is developed in Regional Implementation of Tribal Transportation Safety Program: Sisseton Wahpeton Oyate Roadway Safety Improvement Program , a report from the Upper Great Plains Transportation Institute at North Dakota State University. This report identifies how to apply the methodology to different Native American reservations throughout the country.

Portland limestone cements (PLCs) with higher limestone contents are evaluated in Laboratory and Outdoor Exposure Site Evaluations of Portland Limestone Cements , a report from the Center for Transportation Research at the University of Texas at Austin. This report identifies the durability and sustainability of various materials used in PLCs.

Development outcomes over time with respect to fixed route transit (FRT) system proximity are explored in The Link between Transit Station Proximity and Real Estate Rents, Jobs, People and Housing with Transit and Land Use Planning Implications , a report from The University of Arizona. This report seeks to identify whether desired outcomes of FRTs -- expanding economic development, promoting job accessibility, and reducing congestion and air pollution – are achieved. The report is available for no fee a...

The pattern of residential moves by income in rail transit neighborhoods is examined in Effect of New Rail Transit Stations on Income Distribution of Nearby Residential Moves , a report from the National Center for Sustainable Transportation at the University of California at Davis. This report seeks to analyze moving patterns in the Los Angeles metropolitan area to develop policies around transit-oriented development and its potential displacements.

The current and future regulatory strategies for e-hail services in various cities is described in E-Hail Regulation in Global Cities , a report from the Rudin Center for Transportation at New York University. The goal of this report is to help cities learn from each other's regulatory approaches to leverage the power of shared information. This report also seeks to offer ways for e-hail services to adapt their business models to meet increasing government regulation.