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.
From shifters to derailleurs, pedals to handlebars, this book covers every component of a road bike, lists the tools bike owners need to tackle simple and advanced projects, and demonstrates with 295 detailed illustrations how to work on each part.
Singling out roads as an important factor in economic development, this report presents the findings of a regional technical assistance inquiry carried out to examine the problem of road funding in Asia with the aim of proposing case-specific solutions. Particular attention is paid to the data collected during road assessments performed in the Kyrgyz Republic, Pakistan, Uzbekistan, and Vietnam. Also discussed are a number of possible strategies for combating road-maintenance neglect across Asia.
Under the CAREC 2030 framework, a regional trade strategy will provide a more coherent approach to strengthen trade and enhance growth potential of CAREC countries. The CAREC Integrated Trade Agenda (CITA) 2030 aims to support CAREC countries in integrating further with the global economy through trade expansion from increased market access, greater diversification, and stronger institutions for trade. Taking into consideration the countries' capacities and varying levels of progress, CITA 2030 will be implemented in a phased and pragmatic approach including through a three-year rolling strategic action plan.
Road asset management is one of the top priorities of the Central Asia Regional Economic Cooperation (CAREC) Transport and Trade Facilitation Strategy 2020. The implementation of performance-based road maintenance contracts (PBCs)—an essential element of road asset management—promotes effective and efficient maintenance of road networks. Well-designed PBCs keep roads in predefined good condition at relatively low cost. This guide aims to help policy makers in CAREC member countries understand and implement PBCs. After a brief history of the development of PBCs, it discusses the various types of PBCs and their relative advantages and disadvantages. It highlights PBC implementation in selected developed, developing, and transitional countries, including CAREC member countries, to illustrate best practices.
This publication shares lessons from performance-based road maintenance contracts implemented in Azerbaijan, Georgia, the Kyrgyz Republic, Mongolia, the People’s Republic of China, and Tajikistan. It outlines the contract scope, performance standards, inspections, response and reaction times, payments and deductions, and procurement and contract costs. The publication highlights learning from the different experiences and provides recommendations for future performance-based road maintenance contracts in these and other countries.
Over 1.6 million miles of dirt and gravel roads exist within the United States providing a vital part of the nation's transportation system. An environmentally sensitive road maintenance practice is a practice that when implemented reduces the adverse effect of a road on the environment by treating the cuase of the problem and is in keeping wtih the natural landscape. This illustrated field guide provides examples of environmentally sensitive maintenance practices, which if implemented reduce erosion and sediment, maintain subsurface hydrologic connectivity, restore drainage density to more natural conditions, and eliminate diversion potential. It is organized to identify visual signs and problems associated with CAUSES and SOLUTIONS for the most commonly encountered road problens (road surface, ditch, cutbank, etc.) Highway inspectors, public works construction inspectors, to include some construction and building inspectors and engineers that must meet compliance with specifications, building codes, and other regulations, Additionally, City engineers, concrete masonry contractors, road maintenance specialists and workers, and technicians, as well as County Road Supervisors may ber interested in this volume. Students pursuing degree programs for Civil Engineering or certificates of study for Industrial Maintenance Technology or Public Works training in clases such as Roadway Asset Management Essentials, or Inspecting Pavement Markings or certified Public Infrastructure Inspector courses may be interested in this print field guide as a handy reference. Related products: Sign Up for the Public Roads print subscription to begin receiving valuable guidance bimonthly from the U.S. Department of Transportation Federal Highway Administration here: https://bookstore.gpo.gov/products/sku/750-005-00000-4?ctid= Drainage Manual can be found here: https://bookstore.gpo.gov/products/sku/024-003-00177-5 Field Book for Describing and Sampling Soils, Version 3.0 is available for purchase here: https://bookstore.gpo.gov/products/sku/001-000-04758-2 Converging Waters: Integrating Collaborative Modeling With Participatory Processes to Make Water Resources Decisions can be found here: https://bookstore.gpo.gov/products/sku/008-022-00349-5 Gravel Roads Construction and Maintenance Guide is available for purchase here: https://bookstore.gpo.gov/products/sku/050-001-00348-1 Designing Sustainable Off-Highway Vehicle Trails: An Alaska Train Manager's Perspective is available here: https://bookstore.gpo.gov/products/sku/001-001-00701-3 Other resources that may be of interest produced by the United States Department of Transportation (USDOT) can be found here: https://bookstore.gpo.gov/agency/199 Other publications produced by the U.S. Forest Service within the United States Department of Agriculture can be found here: https://bookstore.gpo.gov/agency/819 , .
Automation and Computational Intelligence for Road Maintenance and Management A comprehensive computational intelligence toolbox for solving problems in infrastructure management In Automation and Computational Intelligence for Road Maintenance and Management, a team of accomplished researchers delivers an incisive reference that covers the latest developments in computer technology infrastructure management. The book contains an overview of foundational and emerging technologies and methods in both automation and computational intelligence, as well as detailed presentations of specific methodologies. The distinguished authors emphasize the most recent advances in the maintenance and management of infrastructure robotics, automated inspection, remote sensing, and the applications of new and emerging computing technologies, including artificial intelligence, evolutionary computing, fuzzy logic, genetic algorithms, knowledge discovery and engineering, and more. Automation and Computational Intelligence for Road Maintenance and Management explores a universal synthesis of the cutting edge in parameters and indices to evaluate models. It also includes: Thorough introductions to management science and the latest methods of automation and the structure and framework of automation and computing intelligence Comprehensive explorations of advanced image processing techniques, recent advances in fuzzy, and diagnosis automation Practical discussions of segmentation and fragmentation and different types of features and feature extraction methods In-depth examinations of methods of classification along with various developed methodologies and models of quantification, evaluation, and indexing in automation Perfect for postgraduate students in road and transportation engineering, evaluation, and assessment, Automation and Computational Intelligence for Road Maintenance and Management will also earn a place in the libraries of researchers interested in or working with the evaluation and assessment of infrastructure.
This study explores several fundamental issues associated with the implementation of the fuel tax reform initiative in the People's Republic of China and the improvement of the sustainability of the country's highway programs. It identifies and explores high-level policy issues, options, and future research needs associated with financing ordinary and rural road construction and maintenance. The research includes an assessment of the impacts, successes, and challenges of the fuel tax reform to date, and identifies areas where additional steps and actions may be required to improve program sustainability and effectiveness. The study also examines applicable experiences from developed and developing countries and suggests policy recommendations.
