Gravel Roads

Gravel Roads

Author: Ken Skorseth

Publisher:

Published: 2000

Total Pages: 112

ISBN-13:

DOWNLOAD EBOOK

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.


Roundabouts

Roundabouts

Author: Lee August Rodegerdts

Publisher: Transportation Research Board

Published: 2010

Total Pages: 407

ISBN-13: 0309155118

DOWNLOAD EBOOK

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.


Assessing and Managing the Ecological Impacts of Paved Roads

Assessing and Managing the Ecological Impacts of Paved Roads

Author: National Research Council

Publisher: National Academies Press

Published: 2006-01-22

Total Pages: 325

ISBN-13: 0309100887

DOWNLOAD EBOOK

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.


Rethinking America's Highways

Rethinking America's Highways

Author: Robert W. Poole

Publisher: University of Chicago Press

Published: 2018-08-03

Total Pages: 376

ISBN-13: 022655760X

DOWNLOAD EBOOK

A transportation expert makes a provocative case for changing the nation’s approach to highways, offering “bold, innovative thinking on infrastructure” (Rick Geddes, Cornell University). Americans spend hours every day sitting in traffic. And the roads they idle on are often rough and potholed, with exits, tunnels, guardrails, and bridges in terrible disrepair. According to transportation expert Robert Poole, this congestion and deterioration are outcomes of the way America manages its highways. Our twentieth-century model overly politicizes highway investment decisions, short-changing maintenance and often investing in projects whose costs exceed their benefits. In Rethinking America’s Highways, Poole examines how our current model of state-owned highways came about and why it is failing to satisfy its customers. He argues for a new model that treats highways themselves as public utilities—like electricity, telephones, and water supply. If highways were provided commercially, Poole argues, people would pay for highways based on how much they used, and the companies would issue revenue bonds to invest in facilities people were willing to pay for. Arguing for highway investments to be motivated by economic rather than political factors, this book makes a carefully-reasoned and well-documented case for a new approach to highways.