This publication contains data on fatal and injury accidents and fatally and nonfatally injured persons involved in motor vehicle traffic accidents for calendar year 1971.
This report represents the findings of an investigation made to evaluate the economic feasibility of placing responsibility for Quality Control on the Contractor and of the use of statistical procedures for acceptance of highway materials and construction. Since, unlike other large industries, statistical Quality Control is not generally practiced
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Photologging—An Aid to Highway Engineering; Soil-Portland Cement Thickness Design—Summary of Current Practices; Photogrammetry for Highway Planning, Location and Design—Review of Current Methods; The Third Base for the Federal Highway Administration’s Contract Price Index
Experimental determinations have shown that the resistance factors for conduits manufactured of corrugated metal vary over a wide range for each of the different corrugation forms now available. Hydraulic design procedures require a reliable determination of the resistance factor applicable to each specific form. Methods are developed, using all av
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The collapse of the Point Pleasant Bridge created many unique problems and posed many new questions to the bridge engineering profession. One question that was paramount was, "What caused the bridge to collapse?". Arrangements were made with the Corps of Engineers to perform rescue work and to clear the wreckage II from the Ohio River channel as qu
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The major findings of this investigation of involvement rate as a function of speed deviation of the accident-involved vehicle from the mean traffic speed are given in this volume. The primary result is that the likelihood of involvement as a function of speed deviation is a U-shaped relationship. The likelihood of involvement is estimated to be gr
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Erosion Control, Safety, and Esthetics on the Roadside—Summary of Current Practices; How Drivers Locate Unfamiliar Addresses—an Experiment in Route Finding; Relationship of Fatality Rates and Fatal Accident Rates to Travel Densities on the Interstate System
Driver Judgments as Influenced by Vehicular Lighting at Intersections; State Highway Department Management Part 2.-- Training and Manpower Development; Travel by Motor Vehicles in 1968 and Related Data
The purpose of this guide is to provide efficient procedures for making accurate estimates of annual average daily traffic (ADT) volumes based on sample counts.
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