This publication contains data on fatal and injury accidents and fatally and nonfatally injured persons involved in motor vehicle traffic accidents for calendar year 1979.
This fifth report provides guidance on geological investigations, durability classification of shales, design features, and construction procedures unique to compacted shale embankments for highways. Guidance is also given on techniques for evaluating existing shale embankments and remedial treatment methods for distressed shale embankments. Index
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This study is a preliminary investigation into the feasibility of using simple techniques to evaluate the effects of urbanization on flood flows in small streams. A number of regression techniques and computer simulation techniques were evaluated, and a recommendation was made that a model similar to those developed by Carter and Anderson be adopte
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This handbook has been written to satisfy the need for an all-inclusive and up-to-date manual covering most aspects of public roadway lighting. Information is intended to be widely applicable and, whenever adaptable, international source material has been incorporated. The handbook is intended for use as a guide in planning, design, operation, and
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The report identifies measures of effectiveness (MOE's) for quality of flow in urban arterial streets and describes a series of studies which will lead to the development of models which will predict values of the MOE's from roadway, traffic, and environmental characteristics. The specific measures of effectiveness are: travel time, intersection st
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This report explains recent fiscal developments, reviews part financial policies and their performance, makes appropriate economic tests, and suggests remedial action. The specific actions of several states in meeting financial problems are also described. It is noted that State Highway programs are in need of additional revenues, and the best and
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The goal of this study is to provide information that will be useful in reducing costs of future computerized urban traffic control systems. The final report provides such information in the form of tutorial and reference material, cost computation procedures, and an example of a communication subsystem specification. The report consists of two vol
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The goal of this study is to provide information that will be useful in reducing costs of future computerized urban traffic control systems. The final report provides such information in the form of tutorial and reference material, cost computation procedures, and an example of a communication subsystem specification. The report consists of two vol
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Relationships were developed between wet-pavement accident rate and skid number for various combinations of highway type, area type (urban/rural) and traffic volume. Accident rate, skid number and related data were collected for two one-year periods on 428 highway sections located in 16 states. An extensive statistical analysis of the data was cond
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A computerized benefit-cost model was designed for use by state highway departments in the selection of accident-reduction counter-measures to be applied to Investigated sites. Two types of wet-pavement accident reduction countermeasures are in current use: those that increase frictional supply and those that decrease frictional demand. Although th
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This volume presents a guide to the role of pavement macrotexture in pavement skid resistance and accidents. An overview of the fundamentals of tire-pavement skid resistance is presented. The methods of measuring macrotexture in the field and in the laboratory are described based on a review of relevant literature. The measurement methods currently
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A computerized benefit-cost model is presented for use by state highway departments in the selection of accident-reduction countermeasures to be applied to investigated sites. The model has capability to evaluate both surface modification countermeasures, which increase frictional supply, and geometric and traffic control countermeasures, which red
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This fourth report covers Phase III field sampling and pressuremeter tests at six shale embankments and laboratory tests on undisturbed embankment samples and on unweathered samples of parent shales used in the embankments. The six embankments, in Tennessee, West Virginia, Kentucky, Ohio (two), and Indiana were selected to cover a range in age and
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