Medium and heavy duty vehicles (MHDVs) are a significant contributor to energy consumption and greenhouse gas emissions in the U.S., accounting for approximately 22 percent of U.S. transportation energy consumption. The fuel consumption of MHDVs has only recently begun to be regulated at the federal level. To provide scientific and technical advice on MHDV efficiency, the Energy Independence and Security Act of 2007 mandated the Secretary of Transportation to sponsor a series of National Academies studie...

The National Academies of Sciences, Engineering, and Medicine has released a report that examines the current state of knowledge and identifies the relevant properties and characteristics of the transport, fate, and effects of diluted bitumen and commonly transported crude oils when spilled in the environment. The report assesses whether the differences between properties of diluted bitumen and those of other commonly transported crude oils warrant modifications to the regulations governing spill respons...

The National Academy of Engineering (NAE) has released Making a World of Difference: Celebrating 50 Years, a publication that commemorates the NAE anniversary. The book includes a collection of essays that discuss the seamless integration of engineering into both our society and our daily lives, and present a vision of what engineering may deliver in the next half century.