Results are described of experiments conducted in Mississippi, California, and Oregon testing the effectiveness of speed control signs in rural school zones and small communities on high-speed, two-lane highways. Signs tested included existing signing, a reduced speed ahead sign, speed limit and reduced speed ahead signs coupled with hazard identif
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United States. Federal Highway Administration. Bridge Division
1979-01-01
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PDF
This Guide, which has been endorsed by the AASHTO Subcommittee for Bridges and Structures, has been prepared for use by the States in recording and coding the data elements that will form a bridge inventory data base. By having a complete and thorough inventory, an accurate report can be made to the Congress of the number and state of the Nation's
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United States. Federal Highway Administration. Office of Engineering/Bridge Division
1979-01-01
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PDF
The purpose of this manual is to provide guidelines for the training of bridge inspectors. It is not intended to provide a definitive treatment of bridge inspection. It is neither an inspection manual nor a textbook for bridge inspections. This manual is, however, a guide both for instruction and for the conduct of bridge inspections. Chapter I of
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In an update of a 1976 report expanded to include a passenger van, the factors influencing the costs of car ownership and operation are examined and methods suggested for obtaining the best value for the money spent. Selected 1979 model year vehicles (standard, compact, and subcompact size cars and a passenger van) and their costs are traced throug
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This report describes the FHWA Level 1 Highway Traffic Noise Prediction Model. This model is given the acronym "SNAP 1.0" for Simplified Noise Analysis Program 1.0. The model is designed to allow the quick calculation of highway traffic noise emissions for simple roadway-receiver configurations. All computed for traffic lanes parallel to the barrie
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The U.S. Geological Survey (USGS), under subcontract to the National Bureau of Standards (NBS) on FHWA contract no. FHWA-7-3-0001, performed the geologic tasks required by the contract. The portion of the project reported in this interim report is part of Phase I requiring documentation of features and conditions which influence stability of natura
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The National Bureau of Standards (NBS), in conjunction with the U.S. Geological Survey (USGS), conducted a four-phase evaluation of high resolution remote sensing techniques for application to problems of determining slope stability. The first two phases, for which the USGS was chiefly responsible, concentrated on documenting the subsurface feature
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This reference manual was prepared by Dr D.R. Methods & Associates, British Columbia, in conjunction with a series of Rock Slope Engineering Workshops sponsored by the Implementation Division of the Federal Highway Administration. The manual consists of eight main parts as follows: Part A: Engineering geology considerations and basic approach to ro
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