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Technologies and Approaches to Reducing the Fuel Consumption of Medium- and Heavy-Duty Vehicles evaluates various technologies and methods that could improve the fuel economy of medium- and heavy-duty vehicles, such as tractor-trailers, transit buses, and work trucks. The book also recommends approaches that federal agencies could use to regulate these vehicles' fuel consumption. Currently there are no fuel consumption standards for such vehicles, which account for about 26 percent of the transportation fuel used in the U.S. The miles-per-gallon measure used to regulate the fuel economy of passenger cars. is not appropriate for medium- and heavy-duty vehicles, which are designed above all to carry loads efficiently. Instead, any regulation of medium- and heavy-duty vehicles should use a metric that reflects the efficiency with which a vehicle moves goods or passengers, such as gallons per ton-mile, a unit that reflects the amount of fuel a vehicle would use to carry a ton of goods one mile. This is called load-specific fuel consumption (LSFC). The book estimates the improvements that various technologies could achieve over the next decade in seven vehicle types. For example, using advanced diesel engines in tractor-trailers could lower their fuel consumption by up to 20 percent by 2020, and improved aerodynamics could yield an 11 percent reduction. Hybrid powertrains could lower the fuel consumption of vehicles that stop frequently, such as garbage trucks and transit buses, by as much 35 percent in the same time frame.
This report identifies potential improvements in terms of more effective safety and environmental regulation for trucks, backed by better systems of enforcement, and identifies opportunities for greater efficiency and higher productivity.
Provides a preliminary examination of whether shippers of domestic surface freight pay the full social costs of the services that they use. This study is intended not to provide definitive answers as to whether shippers pay their full social costs, but rather to determine the feasibility of making such estimates.
Introduction -- Definitions and prior work -- Methods -- Results and discussion -- Findings and conclusions
This book is based on research from Russia, Hungary, Bulgaria, Great Britain, Switzerland and the Czech Republic on issues related to knowledge-based economy development. The idea for this book was developed during three international conferences on digitalization: VI, VII and VIII International Scientific Weeks, organized by Samara State University of Economics (Samara, Russia) in 2018–2020. It is an initiative by the scientific and business organizations in the Samara Region and their Russian and international partners to analyze the current digitalization of social-economic systems, the problems and perspectives of this process, and its role in the creation and development of a new type of economy and new quality of human capital. All the contributions focus on the search for effective ways of adapting to the new digital reality and are based analyses of international statistics, and data from specific companies, educational institutions and governmental development programs. The book explores a variety of topics, including • Knowledge and Information as Basic Values of a New Economic Paradigm; • Information Technologies for Ensuring Sustainable Development of Organizations; • Augmented Reality, Artificial Intelligence and Big Data in Education and Business; • Digital Platforms and the Sharing Economy; • Potential of Digital Footprints in Economies and Education; • Sociocultural Consequences of Digitalization.