Improving fuel economy of tractor-trailers, buses, work trucks

A new congressionally mandated report from the National Research Council evaluates various technologies and methods that could improve the fuel economy of medium- and heavy-duty vehicles, such as tractor-trailers, transit ...

Strategies for improved collection of national travel data

Good travel data are essential to measure and monitor the performance of the U.S. transportation system and to help guide policy choices and investments in transportation infrastructure, says a new report from the National ...

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