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Author : Shauna L. Hallmark,Stephen Lamptey
Publisher : Unknown
Page : 55 pages
File Size : 45,8 Mb
Release : 2004
Category : Traffic estimation
ISBN : LCCN:2005414947
Author : Anonim
Publisher : Unknown
Page : 804 pages
File Size : 45,8 Mb
Release : 2007
Category : Air
ISBN : UCSD:31822036011161
Author : Xiaolin Wang
Publisher : Springer Nature
Page : 280 pages
File Size : 44,5 Mb
Release : 2023-10-29
Category : Technology & Engineering
ISBN : 9783031339066
Future Energy: Challenge, Opportunity, and Sustainability presents new advances and research results in the fields of theoretical, experimental, and practical sustainable energy engineering. The book’s chapters are based on selected research papers presented at the 2023 7th International Conference on Sustainable Energy Engineering (ICSEE 2023). Contributions cover case studies to explore and analyze technological advancements alongside practical applications to help readers better understand the relevant concepts and solutions necessary to achieve clean energy and sustainable development. The book brings together the latest developments in the emerging areas of intelligent power systems, green energy, and technology. It offers approaches to help engineers and researchers working in sustainable energy engineering technologies solve practical problems affecting their daily work.
Author : Anonim
Publisher : Unknown
Page : 254 pages
File Size : 45,5 Mb
Release : 1978
Category : Air quality management
ISBN : IND:30000106298551
Author : R. F. Benekohal
Publisher : Unknown
Page : 212 pages
File Size : 42,5 Mb
Release : 2002
Category : Traffic estimation
ISBN : UIUC:30112048657552
Nationwide surveys of departments of transportation, metropolitan planning organizations, and classification vendors/producers were conducted to determine the state of practice on equipment and methodologies used to determine truck vehicle miles traveled (VMT). The current Illinois Department of Transportation (IDOT) methodology was evaluated and it was found that it overestimated truck VMT for multi-unit trucks on all eight functional classes except on the minor urban arterials. The average overestimation was 11.5% and it varied from -10% to +44%. The current method overestimated truck VMT for single-unit trucks in five and underestimated in three functional classes. The under/over estimation ranged from -6% to +35%, but the average value was close to zero. To calculate truck VMT more accurately, this study proposed two different methods based on average truck percentage (ATP) and average section length (ASL). In the ATP method, truck VMT is calculated by multiplying the ATP for a group of roadway sections by the total VMT of that group. The ATP method should be used when the ATP and the total VMT by volume groups are available. In the ASL method, the total truck volume for the sampled sections is multiplied by the ASL. The ASL method should be used when the information required for ATP is not available or not reliable. Sample size influences the accuracy of truck VMT estimation and the decision on sample size must consider the error level that is acceptable. This study looked at the likely error for different sample sizes and recommended using 8% to 16% of the number of roadway sections. The sections should be distributed among the volume groups. Recently, IDOT collects vehicle classification data for three categories at about 10,000 sections, biennially. It is recommended to evaluate the truck VMT calculation using recent data.
Author : Louis Harold Browning
Publisher : Transportation Research Board
Page : 171 pages
File Size : 44,8 Mb
Release : 2010
Category : Business & Economics
ISBN : 9780309154819
"This report presents an evaluation of the current methods used to generate air emissions information from all freight transportation activities and discusses their suitability for purposes such as health and climate risk assessments, prioritization of emission reduction activities (e.g., through State Implementation Plans), and public education. The report is especially valuable for (1) its identification of the state of the practice, gaps, and strengths and limitations of current emissions data estimates and methods and (2) its conceptual model that offers a comprehensive representation of freight activity by all transportation modes and relationships between modes. This report will better inform the near-term needs of public and private stakeholders regarding the quality of emissions data and guide future research that links freight activities with air emissions."--pub. desc.
Author : Marleah Blom,Nicola Nobile,Ching Yee Suen
Publisher : World Scientific
Page : 277 pages
File Size : 50,9 Mb
Release : 2021-11-16
Category : Computers
ISBN : 9789811239021
This book includes reviewed papers by international scholars from the 2020 International Conference on Pattern Recognition and Artificial Intelligence (held online). The papers have been expanded to provide more details specifically for the book. It is geared to promote ongoing interest and understanding about pattern recognition and artificial intelligence. Like the previous book in the series, this book covers a range of topics and illustrates potential areas where pattern recognition and artificial intelligence can be applied. It highlights, for example, how pattern recognition and artificial intelligence can be used to classify, predict, detect and help promote further discoveries related to credit scores, criminal news, national elections, license plates, gender, personality characteristics, health, and more.Chapters include works centred on medical and financial applications as well as topics related to handwriting analysis and text processing, internet security, image analysis, database creation, neural networks and deep learning. While the book is geared to promote interest from the general public, it may also be of interest to graduate students and researchers in the field.
Author : J.-S. Wang
Publisher : Unknown
Page : 74 pages
File Size : 45,5 Mb
Release : 1994
Category : Traffic accidents
ISBN : UOM:39015075278930
Author : J.-S. Wang
Publisher : Unknown
Page : 68 pages
File Size : 45,8 Mb
Release : 1994
Category : Traffic accidents
ISBN : UOM:39015075278922
Author : Trevor Klatko,Bismark Agbelie,Samuel Labi,Jon Fricker,Kumares Sinha
Publisher : Unknown
Page : 128 pages
File Size : 51,6 Mb
Release : 2016-12-31
Category : Electronic
ISBN : 1622604199
Vehicle Miles Traveled (VMT) is a critical measure of highway system performance used extensively in highway transportation management not only for reporting to oversight agencies such as the FHWA but also as an input for financial analysis, resource allocation, and impact assessments. In the current era as highway revenue from fuel taxes continues to fall and direct user charging such as VMT fees become increasingly attractive, consistent and reliable VMT estimates have become critical for evaluating highway funding options. In the current practice at most highway agencies including the Indiana DOT, there exists several alternative methods for VMT estimation that typically yield a spectrum of estimates that are inconsistent and for certain methods, even inaccurate. This study was commissioned by the Indiana Department of Transportation (INDOT) to develop a benchmark method for VMT estimation and to provide calibration factors for adjusting the VMT estimates derived from the other VMT estimation methods. The benchmark method used in this study was a segment-level framework that decomposes the entire road inventory into links and for each link, determining the product of the traffic volume and the inventory length. For the state highway system, the entire population was used; a comprehensive database was developed which facilitates extensive aggregations of VMT by geographical scope, route, functional class, and vehicle class. For the local roads, a sample of counties of different spatial locations and degrees of urbanization were used, and cluster analysis, geographic information systems (GIS), and spatial interpolation techniques were used to expand the VMT estimates from the local road samples to the population of all counties in the state. The results of this study indicate that there is significant variation, with respect to the benchmark method, of the VMT estimates of the other estimation methods. An implementation platform was developed in this study to produce outcomes that address the VMT data needs of the intended end users and stakeholders; this can be expanded to include new roads in future. It was determined that the current statewide VMT (2013) is 78 billion vehicle-miles, which is expected to grow to 95 billion vehicle miles in 2035.
Author : National Research Council,Transportation Research Board,Division on Engineering and Physical Sciences,Board on Energy and Environmental Systems,Committee to Assess Fuel Economy Technologies for Medium- and Heavy-Duty Vehicles
Publisher : National Academies Press
Page : 251 pages
File Size : 45,9 Mb
Release : 2010-07-30
Category : Science
ISBN : 9780309159470
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.
Author : J. Richard Kuzmyak,National Cooperative Highway Research Program
Publisher : Transportation Research Board
Page : 141 pages
File Size : 49,8 Mb
Release : 2008
Category : Commercial vehicles
ISBN : 9780309098144
Author : Sue McNeil
Publisher : Unknown
Page : 380 pages
File Size : 42,5 Mb
Release : 2008
Category : State transportation agencies
ISBN : NWU:35556038774535
Although transportation agencies in the U.S. have been developing Asset Management Systems (AMS) for specific types of infrastructure assets, there are several barriers to the implementation of AMS. This paper documents the development of a generic methodology for quantifying the benefits derived from implementation of AMS and justifying investment in AMS implementation. The generic methodology involves three analysis methods: descriptive analysis, regression analysis, and benefit-cost analysis. This paper demonstrates how the methodology can be applied to evaluate the implementation of a pavement management system in terms of efficacy, effectiveness, and efficiency (3Es).
Author : Feng Liu,Bob Kaiser
Publisher : Unknown
Page : 168 pages
File Size : 43,5 Mb
Release : 2004
Category : Traffic estimation
ISBN : NWU:35556036463701
Author : Kumares C. Sinha,Samuel Labi
Publisher : John Wiley & Sons
Page : 576 pages
File Size : 42,9 Mb
Release : 2011-09-09
Category : Technology & Engineering
ISBN : 9781118169667
This pioneering text provides a holistic approach to decisionmaking in transportation project development and programming, whichcan help transportation professionals to optimize their investmentchoices. The authors present a proven set of methodologies forevaluating transportation projects that ensures that all costs andimpacts are taken into consideration. The text's logical organization gets readers started with asolid foundation in basic principles and then progressively buildson that foundation. Topics covered include: Developing performance measures for evaluation, estimatingtravel demand, and costing transportation projects Performing an economic efficiency evaluation that accounts forsuch factors as travel time, safety, and vehicle operatingcosts Evaluating a project's impact on economic development and landuse as well as its impact on society and culture Assessing a project's environmental impact, including airquality, noise, ecology, water resources, and aesthetics Evaluating alternative projects on the basis of multipleperformance criteria Programming transportation investments so that resources can beoptimally allocated to meet facility-specific and system-widegoals Each chapter begins with basic definitions and concepts followedby a methodology for impact assessment. Relevant legislation isdiscussed and available software for performing evaluations ispresented. At the end of each chapter, readers are providedresources for detailed investigation of particular topics. Theseinclude Internet sites and publications of international anddomestic agencies and research institutions. The authors alsoprovide a companion Web site that offers updates, data foranalysis, and case histories of project evaluation and decisionmaking. Given that billions of dollars are spent each year ontransportation systems in the United States alone, and that thereis a need for thorough and rational evaluation and decision makingfor cost-effective system preservation and improvement, this textshould be on the desks of all transportation planners, engineers,and educators. With exercises in every chapter, this text is anideal coursebook for the subject of transportation systems analysisand evaluation.