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United States Federal Highway Administration Office of Research

Works: 332 works in 517 publications in 1 language and 8,676 library holdings
Genres: Bibliography  Handbooks and manuals  Classification  Software 
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Most widely held works about United States
Most widely held works by United States
Identification of hazardous locations : a user's manual by James I Taylor( Book )

5 editions published in 1977 in English and held by 198 WorldCat member libraries worldwide

The objective of the research project within which this Executive Summary was prepared was to develop procedures of identifying hazardous locations on all highway facilities except freeways and in the Central Business District (CBD). Both accident and non-accident measures or indicators are included in the formula proposed for establishing degrees of hazardousness at spot locations within the highway system
Speed advisory information for reduced visibility conditions : executive summary by Donald Robert Wagner( Book )

2 editions published in 1978 in English and held by 177 WorldCat member libraries worldwide

The objective of this research project was to develop preliminary design specifications for a speed advisory system for use during periods of reduced visibility (fog). Phase I of the program consisted of developing the necessary facilities, equipment and procedures to conduct controlled experimentation under various levels of fog density. Phase II consisted of a series of interrelated experiments to identify optimum advisory information (sign messages and speed values), and the number, locations, and interconnections between signs which would result in the smoothest traffic flow. Phase III utilizes the information from Phase II, as well as the pertinent literature, to develop preliminary specifications for a full-scale advisory system for use on the public highway
Management of air quality in and near highway tunnels by R. N Schlaug( Book )

5 editions published in 1980 in English and held by 166 WorldCat member libraries worldwide

A comprehensive study was made of air quality management (AQM) practices applicable to highway tunnels for the purpose of improving the design and operation of tunnel ventilation systems. The study consisted of a review and analysis of current AQM practices, a field program in which air flow and air quality measurements were made in operating tunnels, theoretical analysis of the factors affecting tunnel air quality, the development of computer models of AQM systems, and use of the computer models to investigate alternate ventilation methods and to formulate AQM guidelines. This executive summary gives an overall view of the program and summarizes the principal findings and suggested AQM guidelines
Review and evaluation of urban flood flow frequency procedures by Walter J Rawls( Book )

2 editions published between 1980 and 1989 in English and held by 128 WorldCat member libraries worldwide

Effects of highways on wildlife populations and habitats : phase 1, selection and evaluation of procedures : interim report by Lowell W Adams( Book )

4 editions published in 1978 in English and held by 116 WorldCat member libraries worldwide

This work summarizes Phase I of a two-part investigation into the effects of highways on wildlife populations and habitats. Phase I was undertaken to select, test, and evaluate techniques and procedures for rapid and efficient assessment of wildlife populations and habitats in relation to roads and highways in the Pacific Northwest, the Midwest Tillplain, and the Southern Piedmont of the United States. Specific recommenations are made concerning cluster configuration for sampling units, and habitat, bird, mammal, amphibian, reptile, and wildlife road mortality surveys for Phase II of the study. In addition, detailed field procedures selected for the second phase of the study are presented
Banfield high occupancy vehicle lanes by Oregon( Book )

2 editions published in 1978 in English and held by 105 WorldCat member libraries worldwide

This report evaluates the operation of the High Occupancy Vehicle (HOV) lanes on the Banfield Freeway in the City of Portland, Multinomah County, Oregon. This report covers the HOV lanes impact on traffic flow, safety, modal shift, air quality, fuel savings and public attitude
Concrete median barrier research by M. E Bronstad( Book )

2 editions published in 1976 in English and held by 103 WorldCat member libraries worldwide

A comprehensive research program was conducted to appraise performance of concrete median barriers. Investigations included twenty-four crash tests which evaluated performance of barrier profiles, precast designs, and end treatments. Theoretical investigations using a mathematical crash simulation program identified a new barrier shape which was crash tested to compare performance with currently used profiles. Load and stability criteria were determined from experiments and used to analyze barrier alternatives
Evaluation of the Moanalua Freeway carpool/bus bypass lane( Book )

3 editions published in 1977 in English and held by 102 WorldCat member libraries worldwide

This report presents the results of an evaluation study of the carpool/bus bypass lane on the Moanalua Freeway, located in Honolulu, Hawaii. This priority lane facility is located on the median lane in both directions of the six-lane divided freeway. The effectiveness of this carpool/bus lane is evaluated with nine specific criteria: mode split, vehicular and passenger traffic volumes, traffic performance characteristics, effectiveness of traffic control devices, traffic safety, operational problems related to design features, project economics, public attitudes, and institutional problems
Hazardous effects of highway features and roadside objects by United States( Book )

2 editions published in 1978 in English and held by 102 WorldCat member libraries worldwide

The purpose of the study was to determine hazards in run-off-road accidents. The major data sources were accident data from specially trained state police, and road and roadside data from state files. Data were collected in six states; the sample consisted of almost 8,000 accidents on rural roads. Vol. 1 contains a literature review, and the methodology for the data collection and preparation for analysis. Vol. 2. contains the study results
Comparative study of procedures for the analysis of chloride in hardened concrete by G. G Clemeña( Book )

3 editions published in 1976 in English and held by 100 WorldCat member libraries worldwide

In the widely used potentiometric titration procedure for the analysis of chloride in powdered hardened concrete samples, difficulties have often been encountered when determining the endpoint. These difficulties have been eliminated through the use of the Gran method of endpoint determination, which also simplifies the titration and improves the overall precision of the method. Using test specimens, the accuracy of this improved potentiometric titration procedure was evaluated by comparison with the atomic absorption and neutron activation procedures developed for the same analysis. The comparison indicated that the improved titration procedure is the simplest and most economical of the three and possibly is the most accurate
Regulatory signs for lane occupancy and parking : final report by Donald A Gordon( Book )

4 editions published in 1978 in English and held by 100 WorldCat member libraries worldwide

These studies were concerned with the improvement of lane occupancy and parking signs. New designs were developed and tested. Experimental subjects viewed slides of the signs and judged whether the sign permitted certain lane occupancy or parking maneuvers. The effectiveness of each sign type was determined by the speed and accuracy of the subject's responses. Rules were suggested for the improvement of parking-standing signs
Research on the effects of urbanization on small stream flow quantity by Brendan M Harley( Book )

3 editions published between 1978 and 1980 in English and held by 100 WorldCat member libraries worldwide

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 adopted for further investigation. The technique was evaluated against results available for a number of basins located throughout the United States, and reasonable agreement noted
Priority treatment for high occupancy vehicles : project status report by Morris Jerome Rothenberg( Book )

4 editions published in 1977 in English and held by 99 WorldCat member libraries worldwide

This report discusses the current status of 14 preferential treatment projects for buses and carpools in the United States. the range of projects covered include bus and carpool lanes physically separated from the flow of other traffic, contra-flow lanes, exclusive median with-flow lanes, bypasses of metered freeway ramps, and toll reductions for carpools. Key historical events in the development of each project are cited and observations are made on the effectiveness of each
Styrene-butadiene latex modifiers for bridge deck overlay concrete by Kenneth C Clear( Book )

2 editions published in 1978 in English and held by 98 WorldCat member libraries worldwide

Styrene-butadiene (S/B) latex modified concrete overlays are being used to protect new bridge decks from rapid deicer-borne chloride intrusion and also in bridge deck rehabilitation efforts. The purposes of this research were to evaluate several commercially-available S/B latex modifiers for bridge deck overlay concrete; and to develop chemical specifications for the material, a prequalification program to permit evaluation of other S/B latex modifiers which become available, and a certification program to insure the user receives a prequalified product. The chemical and physical properties of the latex emulsions were studied (percent solids, percent butadiene, particle size, surface tension, viscosity, etc.) and the material from each manufacturer was finger printed using infrared spectroscopy. The physical properties of concrete made with each material were also determined (workability, strength-compressive, flexural and bond, freeze-thaw and scaling resistance, and chloride permeability)
Predicting travel volumes for HOV priority techniques : user's guide : final report by Thomas E Parody( Book )

1 edition published in 1982 in English and held by 98 WorldCat member libraries worldwide

Identification of hazardous locations : final report by James I Taylor( Book )

2 editions published in 1977 in English and held by 98 WorldCat member libraries worldwide

Determination of consistency characteristics of soils by Peter Jay Huck( Book )

2 editions published in 1977 in English and held by 97 WorldCat member libraries worldwide

The mechanical response of soil may be characterized as stiff, transition, or fluid, depending upon its consistency at various moisture contents. This program was charged with the development of test method and hardware not having the disadvantages of traditional plasticity tests. In particular, the test method should not require removal of aggregate or drying to near zero moisture content. It should test the soil under conditions similar to earthquake in the field, yet have the potential for determining the effect of any stabilization or other treatment that might be used in highway construction. After reviewing numerous parameters, it was determined that the most attractive approach is to measure strength or stiffness of soil specimens compacted for moisture-density determination (AASTHO T-99 or ASTM D-698). Subsequent testing with 13 soil types indicated that the coefficient of earth pressure at rest (K sub O) is appropriate both as a classification test and for use in earthwork design. The K sub O test device and procedure are fully described
Unique concepts and systems for "zero-maintenance" pavements : state-of-the-art report( Book )

3 editions published in 1977 in English and held by 97 WorldCat member libraries worldwide

This document is a State-of-the-Art report surveying many new, as well as infrequently used techniques for improving the performance of the components of pavement systems. The goal of this work was to identify important factors affecting the design of new structural systems for "zero-maintenance" pavements. The three basic components of the conventional pavement system--the subgrade, the subbase and base, and the surface course--have been examined. The latest techniques of strengthening and stabilizing the subgrade component, and preserving its improved properties are reviewed. The feasibility of utilizing synthetic aggregates and waste products in "zero-maintenance" pavements is addressed. The utilization of new materials and new systems such as prefabricated panels and pile supported pavements have also been investigated. Evaluations of existing information on the individual pavement system components have been synthesized to produce one modified conventional, and seven new structural pavement systems that may be capable of satisfying "zero-maintenance" criteria
Engineering guidelines for the analysis of traffic-induced vibration by F. F Rudder( Book )

2 editions published in 1978 in English and held by 97 WorldCat member libraries worldwide

These guidelines present a methodology for assessing the potential for adverse environmental impact resulting from seismic vibrations induced by traffic operating on highways. Vehicle/pavement interaction, propagation of vibration, response of building structures and evaluation criteria are presented in quantitative engineering terms. Abatement strategies, measurement, and analysis of traffic-induced vibration are discussed. Pavement surface roughness, vehicle speed, and vehicle gross weight are the important parameters describing traffic-induced vibration. Example problems and analyses are presented. Highway engineers and planners familiar with techniques used to evaluate traffic noise impact should easily understand and use these guidelines
Evaluation of control strategies : executive summary by R. David Henry( Book )

2 editions published in 1976 in English and held by 95 WorldCat member libraries worldwide

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Alternative Names
United States. Federal Highway Administration. Office of the Associate Administrator for Research and Development. Office of Research

English (56)