Gravel Roads

Gravel Roads

Author: Ken Skorseth

Publisher:

Published: 2000

Total Pages: 112

ISBN-13:

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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.


Where the Weather Meets the Road

Where the Weather Meets the Road

Author: National Research Council

Publisher: National Academies Press

Published: 2004-03-31

Total Pages: 189

ISBN-13: 0309166578

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Weather has broad and significant effects on the roadway environment. Snow, rain, fog, ice, freezing rain, and other weather conditions can impair the ability of drivers to operate their vehicles safely, significantly reduce roadway capacity, and dramatically increase travel times. Multiple roadway activities, from roadway maintenance and construction to shipping, transit, and police operations, are directly affected by inclement weather. Some road weather information is available to users currently, however a disconnect remains between current research and operations, and additional research could yield important safety and economic improvements for roadway users. Meteorology, roadway technology, and vehicle systems have evolved to the point where users could be provided with better road weather information through modern information technologies. The combination of these technologies has the potential to significantly increase the efficiency of roadway operations, road capacity, and road safety. Where the Weather Meets the Road provides a roadmap for moving these concepts to reality.


Report No. FHWA-RD.

Report No. FHWA-RD.

Author: United States. Federal Highway Administration. Offices of Research and Development

Publisher:

Published: 1980

Total Pages: 608

ISBN-13:

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Passenger Car Equivalents on Urban Freeways

Passenger Car Equivalents on Urban Freeways

Author: Edmond L. Seguin

Publisher:

Published: 1982

Total Pages: 40

ISBN-13:

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This report presents the results of a study to determine passenger car equivalents (PCEs) of trucks and other vehicles on urban freeways. Field data collection used the Traffic Evaluator System (TES). Samples of weaving, merge, diverge, and basic freeway sections were studied in Houston, Dallas and Atlanta. Detailed vehicle classification, headway, speed, and spacing were developed for over 287,000 vehicles.


Supergrade Requirements

Supergrade Requirements

Author: United States. Congress. House. Committee on Post Office and Civil Service. Subcommittee on Manpower and Civil Service

Publisher:

Published: 1967

Total Pages: 156

ISBN-13:

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