This research was conducted to develop a cost-effectiveness model for guardrail selection that includes cost parameters for eleven (11) guardrail configurations and criteria for analysis of system effectiveness under various dynamic impact conditions. Vehicle classes include 2250-lb (1021-kg) and 4500-lb (2041-kg) vehicles. Accident severities were
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Specification for design, of steel box girder bridges are proposed for the AASHTO Specification for Highway Bridges. Load Factor Design approach is used. In the design of compression flanges residual stresses and geometric imperfections are considered. For unstiffened flanges a new strength curve is proposed. Strength of stiffened flanges is given
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This manual provides the designer with usable means for estimating the hydraulic resistance factors for five different corrugation shapes used in annular C.M.P. and enables the designer to estimate the resistance factors for new and untested corrugation shapes, should they become available.
Data from a total of 17 occurrences of scour at seven bridge sites in Louisiana were collected, covering the following ranges: Pier width, 3.4-10.4 m; flow depth, 1.7-19.5 m; flow velocity, 0.46-1.8 m/s; Froude number, 0.067-0.189; scour depth, 3.4-10.4 m, and bed material median diameter, 0.008-0.06 mm. An analysis of the relative scour depth with
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This publication brings together annual series of selected statistical tabulations relating to highway transportation in three major areas: (1) Highway use--the ownership and operation of motor vehicles; (2) highway finance--the receipts and expenditures for highways by public agencies; and (3) the highway plant--the extent, characteristics, and pe
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Specification for design, of steel box girder bridges are proposed for the AASHTO Specification for Highway Bridges. Load Factor Design approach is used. In the design of compression flanges residual stresses and geometric imperfections are considered. For unstiffened flanges a new strength curve is proposed. Strength of stiffened flanges is given
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United States. Federal Highway Administration. Program Management Division
1980-01-01
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PDF
The Highway Performance Monitoring System (HPMS) has been designed and implemented as a continuing information system encompassing data collection, extensive data analysis and modeling, and historical recordkeeping. Basically, the HPMS will provide the Federal Highway Administration (FHWA) with the capability to: (1) periodically assess the extent
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This publication contains data on fatal and injury accidents and fatally and nonfatally injured persons involved in motor vehicle traffic accidents for calendar year 1980. The 1980 data are classified, as were the 1976 data, by the realigned highway systems described below. Because of reporting problems related to the transition to new system defin
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The Traffic Planning manual is a reference of basic traffic engineering techniques and their potential for improving traffic flow and traffic safety of urban arterial streets and highways. The manual identifies the traffic engineering measure appropriate for consideration in development of transportation improvement plans and programs.
This manual provides the information needed to use coarse anthracite and bituminous wastes in highway embankment construction. It has 2 parts. Part 1 contains wide ranging data needed for an understanding of coal-mine refuse (CMR) properties, its origins, and regulations governing its disposal. Case histories of highway embankments with CMR are inc
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This technical summary presents in concise detail the findings contained in the full reports of Phases I and II of the development of pavement and geometric design criteria for minimizing hydroplaning. The full-length report numbers are: Phase I FHWA-RD-75-11 and Phase II FHWA-RD-79/31. The authors have covered the empirical indications of hydropla
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