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.

Many inhabitants of rural areas in developing countries lack adequate and affordable access to transport infrastructure services, and this lack of transport opportunities constrains economic and social development. This report looks at the role of rural transport in reducing poverty and considers a range of issues affecting rural mobility including costs, stakeholders involved, population densities and competing services. It examines policies for promoting rural mobility including financial and regulatory considerations.

All phases of road developmentâ€"from construction and use by vehicles to maintenanceâ€"affect physical and chemical soil conditions, water flow, and air and water quality, as well as plants and animals. Roads and traffic can alter wildlife habitat, cause vehicle-related mortality, impede animal migration, and disperse nonnative pest species of plants and animals. Integrating environmental considerations into all phases of transportation is an important, evolving process. The increasing awareness of environmental issues has made road development more complex and controversial. Over the past two decades, the Federal Highway Administration and state transportation agencies have increasingly recognized the importance of the effects of transportation on the natural environment. This report provides guidance on ways to reconcile the different goals of road development and environmental conservation. It identifies the ecological effects of roads that can be evaluated in the planning, design, construction, and maintenance of roads and offers several recommendations to help better understand and manage ecological impacts of paved roads.

Printed on Demand. Limited stock is held for this title. If you would like to order 30 copies or more please contact [email protected] Contact [email protected], if currently unavailable. This paper is part of a four-volume series of publications on rural transport promoted by the World Bank's Rural Transport Thematic Group under the aegis of its knowledge management activities. The four volumes are Options for Managing and Financing Rural Transport Infrastructure, Improving Rural Mobility, Developing Rural Transport Policies and Strategies, and this paper on Design and Appraisal of Rural Transport Infrastructure.

This book analyses the use of rural road networks and the causes and effects of road programmes in the areas of personal travel, education, health and poverty alleviation. It discusses the criteria which are being used for rural road selection and their impact in Egypt, India, Botswana and Thailand.

In Divided Highways, Tom Lewis tells the monumental story of the largest engineered structure ever built: the Interstate Highway System. Here is one of the great untold tales of American enterprise, recounted entirely through the stories of the human beings who thought up, mapped out, poured, paved - and tried to stop - the Interstates. Conceived and spearheaded by Thomas "the Chief" MacDonald, the iron-willed bureaucrat from the muddy farmlands of Iowa who rose to unrivaled power, the highway system was propelled forward through the pathbreaking efforts of brilliant engineers, argued over by politicians of every ideological and moral stripe, reviled by the citizens whose lives it devastated, and lauded as the greatest public works project in U.S. history.

The goals of this book are to update information on the effects of rural road development, both in Nepal and globally, explain the environmental, socioeconomic, and sociocultural impacts of expanding rural road networks in the Nepalese Himalaya, and to promote further studies on rural road development throughout the world based on studies and investigations performed in Nepal. Readers will learn about the history of rural road development, as well as the challenges to effectively design and construct rural roads and how these obstacles may be overcome. Chapter one offers a global review of road development, and both the positive and negative impacts of rural road implementation. Chapter two defines mobilities within the context of coupled social and ecological systems, specifically in the Nepalese Himalaya. Chapters three through five detail the environmental, socioeconomic, and sociocultural impacts expanding rural road networks through several case studies. The concluding chapter summarizes the findings of the book, discussing the need for interdisciplinary cooperation and collaboration to avoid negative consequences. This book will be of interest to teachers, researchers, policy makers, and development organizations.