Download or read book Modelling future truck weight patterns as influenced by alternative vehicle weight legislation written by John Griffith Larkin and published by . This book was released on 1978 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Masters Theses in the Pure and Applied Sciences written by Wade H. Shafer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and dis seminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) * at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the ac tivity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all concerned if the printing and distribution of the volume were handled by an international publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Corporation of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 23 (thesis year 1978) a total of 10,148 theses titles from 27 Canadian and 220 United States universities. We are sure that this broader base for theses titles reported will greatly enhance the value of this important annual reference work. While Volume 23 reports these submitted in 1978, on occasion, certain universities do report theses submitted in previous years but not reported at the time.
Download or read book Model for Trucking Productivity Analysis of Alternative Weight Limits written by and published by . This book was released on 1994 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vehicle weight and dimension (VWD) regulations are ntended to balance the economic benefits of efficient freight trnasportation against the costs that large trucks can impose on transport infrastructure. This paper presents models to predict the equivalent pavement loads (a measure of the cost) per unit payload (a measure of the benefit) as a function of the gross vehicle weight limit and the intensity of enforcement for the common heavy truck types. The models indicate that there are no optimum gross vehicle weight limits that can yield minimum equivalent standard axle loads per payload. It is noted that the incremental pavement cost/payload benefit ratio for the heavier trucks e.g. the doubes, is lower than for semi-trailer combinations. Potential applications and limitations of the models are discussed. For the covering abstract of this conference, see IRRD number 863140.
Download or read book Research to Support Evaluation of Truck Size and Weight Regulations written by National Academies of Sciences, Engineering, and Medicine (U.S.). Truck Size and Weight Limits Research Plan Committee and published by . This book was released on 2019 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRB's Special Report 328: TRB's Truck Size and Weight Limits Research Plan Committee has issued its second and final report, Research to Support Evaluation of Truck Size and Weight Regulations, to the U.S. Department of Transportation. The report presents a research plan to reduce the major sources of uncertainty in projections of the consequences of proposed changes in truck size and weight limits. The report defines a program of 27 coordinated research projects in six areas. The committee acknowledges that improvements in models for projecting impacts of changes in truck size and weight limits, while necessary, will not guarantee the success of future truck size and weight policy studies. Future studies will be useful as guides for decisions only if policy objectives and practical policy options are clearly defined, the analysis is logically structured to reveal the most promising policies, and uncertainties are properly characterized. The committee issued its first report in April 2018, which summarized the research recommendations of past truck size and weight limit studies and identified criteria for deciding the priority of topics for inclusion in the research plan.
Download or read book Evolution of Truck Weight Limits and Bridge Live Load Models written by Amanda Pushka and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research presents evidence of the impacts of truck size and weight regulation changes on bridge live load models, truck operating gross vehicle weights and bridge structure reliability, specifically focusing on the context of Manitoba, Canada. This work addresses previous research gaps and contributes knowledge to this topic by: (1) examining historical relationships between truck size and weight regulations and bridge design codes; (2) conducting a retrospective, longitudinal study using a unique time- series of truck weight data to provide insights about the magnitude and timing of the impacts of truck weight regulatory changes on truck operating gross vehicle weights; and (3) evaluating the reliability of typical bridge types designed according to modified live load models and subject to differing truck live loads. Key findings from this work include several insights and observations. First, while at times bridge codes are released in conjunction with expected regulation changes, there is often a delay in the issuance of revised design codes, thus highlighting the importance of assessing current changes to the truck fleet for future bridge code live load models. Second, truck carriers take advantage of increased truck weight limits; however, the truck configuration and type of commodity influences the sensitivity to the weight limit changes. Similarly, the timing of the response is dependent on the ease of implementation and immediate increases are observed for weigh-out commodities when fleet modifications are not required. Third, three bridge types designed to the previously unanalyzed live load model specified in Manitoba are found to maintain a level of safety for the girders that exceeds target code requirements with reliability indices ranging from 4.65 to 5.04, depending on the considered live load statistics. This indicates a potential capacity for the considered structure types to safely withstand increased traffic load effects. By studying specific topics influenced by truck size and weight regulation changes and providing evidence of the impacts on truck operating weights and bridge infrastructure, this thesis contributes new insights to address gaps in previous research. It highlights the importance of monitoring changing truck weights and configurations to maintain the level of safety of bridge infrastructure.
Download or read book HRIS Abstracts written by and published by . This book was released on 1990 with total page 884 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Medium and Heavy Duty Fuel Efficiency Improvement Program written by and published by . This book was released on 2011 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book West Side Hwy Project New York written by and published by . This book was released on 1977 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technologies and Approaches to Reducing the Fuel Consumption of Medium and Heavy Duty Vehicles written by National Research Council and published by National Academies Press. This book was released on 2010-07-30 with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book ITF Research Reports Moving Freight with Better Trucks Improving Safety Productivity and Sustainability written by OECD and published by OECD Publishing. This book was released on 2011-04-19 with total page 361 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Automotive Research and Development written by United States. Congress. Senate. Committee on Interior and Insular Affairs. Subcommittee on Energy Research and Water Resources and published by . This book was released on 1975 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hearings Reports and Prints of the Senate Committee on Interior and Insular Affairs written by United States. Congress. Senate. Committee on Interior and Insular Affairs and published by . This book was released on 1976 with total page 1552 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cost Effectiveness and Deployment of Fuel Economy Technologies for Light Duty Vehicles written by National Research Council and published by National Academies Press. This book was released on 2015-09-28 with total page 812 pages. Available in PDF, EPUB and Kindle. Book excerpt: The light-duty vehicle fleet is expected to undergo substantial technological changes over the next several decades. New powertrain designs, alternative fuels, advanced materials and significant changes to the vehicle body are being driven by increasingly stringent fuel economy and greenhouse gas emission standards. By the end of the next decade, cars and light-duty trucks will be more fuel efficient, weigh less, emit less air pollutants, have more safety features, and will be more expensive to purchase relative to current vehicles. Though the gasoline-powered spark ignition engine will continue to be the dominant powertrain configuration even through 2030, such vehicles will be equipped with advanced technologies, materials, electronics and controls, and aerodynamics. And by 2030, the deployment of alternative methods to propel and fuel vehicles and alternative modes of transportation, including autonomous vehicles, will be well underway. What are these new technologies - how will they work, and will some technologies be more effective than others? Written to inform The United States Department of Transportation's National Highway Traffic Safety Administration (NHTSA) and Environmental Protection Agency (EPA) Corporate Average Fuel Economy (CAFE) and greenhouse gas (GHG) emission standards, this new report from the National Research Council is a technical evaluation of costs, benefits, and implementation issues of fuel reduction technologies for next-generation light-duty vehicles. Cost, Effectiveness, and Deployment of Fuel Economy Technologies for Light-Duty Vehicles estimates the cost, potential efficiency improvements, and barriers to commercial deployment of technologies that might be employed from 2020 to 2030. This report describes these promising technologies and makes recommendations for their inclusion on the list of technologies applicable for the 2017-2025 CAFE standards.
Download or read book Bulletin of the Atomic Scientists written by and published by . This book was released on 1970-06 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Bulletin of the Atomic Scientists is the premier public resource on scientific and technological developments that impact global security. Founded by Manhattan Project Scientists, the Bulletin's iconic "Doomsday Clock" stimulates solutions for a safer world.
Download or read book Popular Science written by and published by . This book was released on 2004-09 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: Popular Science gives our readers the information and tools to improve their technology and their world. The core belief that Popular Science and our readers share: The future is going to be better, and science and technology are the driving forces that will help make it better.
Download or read book Transportation Systems 1997 TS 97 written by Markos Papageorgiou and published by . This book was released on 1997 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Amendments to Alaska Native Claims Settlement Act written by United States. Congress. Senate. Committee on Interior and Insular Affairs and published by . This book was released on 1975 with total page 1862 pages. Available in PDF, EPUB and Kindle. Book excerpt:
