Author: Raymond Craig Caldwell
Publisher:
ISBN:
Category : Dirt roads
Languages : en
Pages : 160

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Author: Ken Skorseth
Publisher:
ISBN:
Category : Gravel roads
Languages : en
Pages : 112

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Book Description
The purpose of this manual is to provide clear and helpful information for maintaining gravel roads. Very little technical help is available to small agencies that are responsible for managing these roads. Gravel road maintenance has traditionally been "more of an art than a science" and very few formal standards exist. This manual contains guidelines to help answer the questions that arise concerning gravel road maintenance such as: What is enough surface crown? What is too much? What causes corrugation? The information is as nontechnical as possible without sacrificing clear guidelines and instructions on how to do the job right.

Author:
Publisher:
ISBN:
Category : Air travel
Languages : en
Pages : 220

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Author: Reginald R. Souleyrette
Publisher:
ISBN:
Category : Accident investigation
Languages : en
Pages : 124

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Book Description
Iowa features an extensive surface transportation system, with more than 110,000 miles of roadway, most of which is under the jurisdiction of local agencies. Given that Iowa is a lower-population state, most of this mileage is located in rural areas that exhibit low traffic volumes of less than 400 vehicles per day. However, these low-volume rural roads also account for about half of all recorded traffic crashes in Iowa, including a high percentage of fatal and major injury crashes. This study was undertaken to examine these crashes, identify major contributing causes, and develop low-cost strategies for reducing the incidence of these crashes. Iowa's extensive crash and roadway system databases were utilized to obtain needed data. Using descriptive statistics, a test of proportions, and crash modeling, various classes of rural secondary roads were compared to similar state of Iowa controlled roads in crash frequency, severity, density, and rate for numerous selected factors that could contribute to crashes. The results of this study allowed the drawing of conclusions as to common contributing factors for crashes on low-volume rural roads, both paved and unpaved. Due to identified higher crash statistics, particular interest was drawn to unpaved rural roads with traffic volumes greater that 100 vehicles per day. Recommendations for addressing these crashes with low-cost mitigation are also included. Because of the isolated nature of traffic crashes on low-volume roads, a systemic or mass action approach to safety mitigation was recommended for an identified subset of the entire system. In addition, future development of a reliable crash prediction model is described.

Author: Eugene Madison Wilson
Publisher: Transportation Research Board
ISBN: 0309069688
Category : Roads
Languages : en
Pages : 180

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Book Description
TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 321: Roadway Safety Tools for Local Agencies examines the safety tools and procedures that are practical and relatively easy to apply, and that can be implemented by agencies with limited financial support and personnel. Recognizing the wide variation in the operations and responsibilities of local agencies, the report acknowledges that the level of expertise in transportation safety analysis also varies greatly.

Author: Chris Donnges
Publisher:
ISBN:
Category : Rural roads
Languages : en
Pages : 120

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Book Description
Provides an analysis of rural road maintenance in the Asian region.

Author: American Association of State Highway and Transportation Officials
Publisher: Aashto
ISBN: 9781560511663
Category : Technology & Engineering
Languages : en
Pages : 0

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Book Description

Author: Hitoshi Ieda
Publisher: Springer Science & Business Media
ISBN: 4431939547
Category : Political Science
Languages : en
Pages : 431

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Book Description
Systems of transportation long ago developed out of the profound human need to connect and communicate. Transport today is still the only means for the physical movement of goods and people. Alongside the evolution of transportation and communication technologies, the astounding phenomenon of urbanization has taken place. Cities have grown faster and larger, absorbing vast influxes of dwellers who seek convenient and comfortable lifestyles with the required fast, cheap, and safe systems of transport. Of the world's megacities, with populations of more than ten million, over half are in Asia. While enjoying large-scale economic power, Asian megacities also face serious challenges. They suffer from too-rapid urbanization, with the resulting congestion, pollution, and destruction of traditional local cultures and industries. Written by experts from Asian academic institutes, this book addresses the urgent question of how to achieve sustainability in the still-growing cities of Asia. The chapters comprise the latest research and the application of promising measures, some already realized in Asia, that include urban transport system design and management, land-use control, city planning, and sustainability. Of vast import, this volume was written for students and researchers, planners and engineers, and all who are interested in sustainable urban environments. Following is the structure and rough sketch of the contents of this book: Part I, "The First Step: An Overview" deals with Asian characteristics from natural, cultural, and economic viewpoints, and then describes how we should grasp the concept of urban sustainability in urban transport in Asia. Readers will understand various aspects of Asia as introductory and preparatory knowledge. Part II, "Best Practices from Asia with Wisdom: Keys to Success and Facing Limitations" will introduce actual comparatively successful and promising measures tried and realized in Asia. This part covers various cases from passenger transport to freight transport, from transport system design to system management, from engineering measures to people's participation, from traffic control to land-use control and site development. Readers will find an abundance of information and examples in this main part of the book. Part III, "Future of Urban Transport in Asia: Rising Asia Proposes to the World" discusses key issues and hot topics of study on sustainable city and transport for the future: development and management, travel demand management, growth management, site development strategies, and financial and institutional measures.

Author: Lee August Rodegerdts
Publisher: Transportation Research Board
ISBN: 0309155118
Category : Technology & Engineering
Languages : en
Pages : 407

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Book Description
TRB's National Cooperative Highway Research Program (NCHRP) Report 672: Roundabouts: An Informational Guide - Second Edition explores the planning, design, construction, maintenance, and operation of roundabouts. The report also addresses issues that may be useful in helping to explain the trade-offs associated with roundabouts. This report updates the U.S. Federal Highway Administration's Roundabouts: An Informational Guide, based on experience gained in the United States since that guide was published in 2000.

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 136

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Book Description