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The US Transportation Collection consists of documents from across all transportation modes with specific focus on research reports from US DOT, state DOTs, and other transportation organizations. Bookmark this collection: https://rosap.ntl.bts.gov/collection_ust or https://doi.org/10.21949/1530857.

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Showing 34081 - 34100 of 36710 results
  • Sovereign immunity in Virginia an overview
    Sovereign immunity in Virginia : an overview.
    Heimbach, Thomas L
    1981-01-01 | PDF
    This report was designed primarily to apprise persons in state agencies of the law of sovereign immunity in Virginia, to comment on the likelihood of this law being changed, and to identify the possible sources of such change. The report addresses the potential tort liability both of individual state employees and of the agencies themselves.
  • Fatal Accident Reporting System 1981 an Overview of US Traffic Fatal Accident and Fatality Data Collected in FARS for the Year 1981
    Fatal Accident Reporting System 1981: an Overview of U.S. Traffic Fatal Accident and Fatality Data Collected in FARS for the Year 1981
    National Center for Statistics and Analysis (U.S.)
    1981-01-01 | PDF
    The Fatal Accident Reporting System (FARS) gathers data on the most severe traffic accidents that occur each year--those that result in loss of human life.
  • Jointless bridges final report
    Jointless bridges : final report.
    Zuk, William
    1981-01-01 | PDF
    The results of this study are reported in two parts. The first deals with the various methods states are employing to reduce the number of joints in bridge decks. The most common method is the use of integral abutments, where the superstructure is joined to a flexible type of abutment. Typical designs of integral abutments are illustrated in the In ...
  • HVOSM Studies of CrossSlope Breaks on Highway Curves
    HVOSM Studies of Cross-Slope Breaks on Highway Curves
    Glennon, J.C. ;
    Neuman, T. R.
    1981-01-01 | PDF
    HVOSM studies of cross-slope breaks on highway curves.
  • Evaluation of a nuclear gage for controlling the consolidation of fresh concrete final report
    Evaluation of a nuclear gage for controlling the consolidation of fresh concrete : final report.
    Ozyildirim, H. Celik
    1981-01-01 | PDF
    Evaluated was an approach to controlling the consolidation of in-place portland cement concrete on the basis of densities obtained with a Troxler 3411 nuclear gage. The gage was used in the backscatter mode on low-slump concrete bridge deck overlays and in both the backscatter and the direct transmission modes on continuously reinforced concrete pa ...
  • Moving Maintenance Operations on Texas Urban Freeways A Limited Overview of Current Practices and Problem Identification
    Moving Maintenance Operations on Texas Urban Freeways: A Limited Overview of Current Practices and Problem Identification
    Faulkner, Michael J. S. ;
    Dudek, Conrad L.
    1981-01-01 | PDF
    This report documents problem areas identified during the observation of five moving maintenance operations on urban freeways in Texas. The operations included striping and the installation of raised pavement markers. The problems were grouped into two categories: freeway design related and operational problems.
  • Design and test properties of super water reducers in Portland cement concrete final report
    Design and test properties of super water reducers in Portland cement concrete : final report.
    Law, Sheldon M. ;
    Rasoulian, Masood
    1980-12-01 | PDF
    Recently, new concrete admixtures (super water reducers) have been developed and marketed by private industry. These admixtures permit the mixing and placement of very low water-cement ratio (0.32 to 0.38) concretes at conventional consistencies (slumps of 2 ½ to 3 ½ inches) with conventional equipment and slightly modified procedures. Mixes at gre ...
  • Evaluation of reef shell embankment final report
    Evaluation of reef shell embankment : final report.
    Melancon, James ;
    Bokun, Steve G.
    1980-12-01 | PDF
    This report discusses a method of constructing an embankment over marshland soils by end-dumping reef shell directly onto the marshland with no other major subgrade preparation. The dumped reef shell is then spread out to form a "floating" embankment over the soft marshland. This report compares the subsidence characteristics of a reef shell embank ...
  • North Dakota Grain and Oilseed Transportation Statistics 197980
    North Dakota Grain and Oilseed Transportation Statistics 1979–80
    Griffin, Gene C.
    1980-12-01 | PDF
    This report represents a continuation of analyses concerned with the patterns and methods of distributing grain from North Dakota. The collection and compilation of this type of data began in 1956-57. The objective of this report, like prior reports, is to provide the necessary data base for identifying trends in the distribution of grains and oils ...
  • Bearing Capacities and Characterization of Compressible Clayey and Silty Foundation Soils in Oklahoma
    Bearing Capacities and Characterization of Compressible Clayey and Silty Foundation Soils in Oklahoma
    Hayes, Curtis J.
    1980-12-01 | PDF
    This study develops a characterization of systems from the surface down to bedrock. alluvial deposits where fill settlement is alluvial soils in two river Study sites were located in a problem. Continuous undisturbed soil samples were taken. Unconfined compression and consolidation tests were run on the soil layers. The field testing included the s ...
  • An evaluation of improved structural materials in marine piling
    An evaluation of improved structural materials in marine piling.
    Quinn, William J.
    1980-11-01 | PDF
    A study to evaluate the production and field performance of marine piling fabricated with improved structural materials is currently being performed by the Oregon State Highway Division under the sponsorship of the Federal Highway Administration. In this study, materials that were developed mainly for bridge deck protection and rehabilitation were ...
  • Background Data Required for Developing a Generalized Approach to Evaluating Impacts of Short Range Alternatives
    Background Data Required for Developing a Generalized Approach to Evaluating Impacts of Short Range Alternatives
    Chui, Margaret K. ;
    Buffington, Jesse L.
    1980-11-01 | PDF
    Demand for better transit systems has grown over the years because of the continued urbanization of the cities, population growth and recent concerns of energy conservation. Evaluation procedures developed are primarily applicable for long range analysis and for user costs and benefits analysis. State and federal transportation officials have recog ...
  • Vocational options for those with sickle cell trait questions about hypoxemia and the industrial environment
    Vocational options for those with sickle cell trait : questions about hypoxemia and the industrial environment.
    McKenzie, Jess M.
    1980-11-01 | PDF
    This report is based on an oral presentation to physicians interested in the treatment of patients with sickle cell disease. Many patients have parents and siblings who possess the sickle cell trait (SCT), and who often require not only genetic counseling, but also information about their own health.Some have been informed that they cannot pursue c ...
  • Beneficial Use of Sulfur in SulfurAsphalt Pavements
    Beneficial Use of Sulfur in Sulfur-Asphalt Pavements
    Saylak, D. ;
    Gallaway, B. M.
    1980-11-01 | PDF
    The use of sulfur as a means of upgrading poorly graded mineral aggregates for use in asphaltic concrete mixes has been under study by Shell Canada under the trade name of Thermopave® for approximately fifteen years. Laboratory work has been extensive and numerous field trials have been completed in Canada. The Texas Transportation Institute under ...
  • The evaluation of pavement patching materials in Oregon final report
    The evaluation of pavement patching materials in Oregon : final report.
    Quinn, William J. ;
    Beecroft, Gordon
    1980-11-01 | PDF
    This report describes the installation and evaluation of trial pavement patching materials in Oregon. The patches were placed in Portland cement concrete and bituminous concrete pavements and evaluated for periods ranging from four to twelve months.Of the five products used in patching the Portland cement concrete pavement, the epoxy concrete and t ...
  • Final Regulatory Analysis for Model Years 198385 Light Truck Fuel Economy Standards
    Final Regulatory Analysis for Model Years 1983-85 Light Truck Fuel Economy Standards
    United States. Department of Transportation. National Highway Traffic Safety Administration
    1980-11-01 | PDF
    Final light truck fuel economy standards for model years (MY) 1983-85 are established as shown below. In addition to continuing separate standards for two-wheel drive (4x2's) and four-wheel drive (4x4's) trucks, the Agency, in desiring to maximize manufacturer marketing and investment flexibility, has also established a single composite standard. C ...
  • Transverse Cracking in Asphalt Pavements
    Transverse Cracking in Asphalt Pavements
    Philliber, Wayne ;
    Golden, David
    1980-10-01 | PDF
    This study looks at transverse cracking in asphalt pavement from three viewpoints: 1. 3-R crack repair 2. Mix design 3. Maintenance Some possible alternatives are discussed to deter the formation of transverse cracks in new overlays through improved mix design and construction practices, through the use of fabrics and relief layers, and through the ...
  • An exploratory investigation of various assessment instruments as correlates of complex visual monitoring performance
    An exploratory investigation of various assessment instruments as correlates of complex visual monitoring performance.
    Thackray, Richard I. ;
    Touchstone, R. Mark
    1980-10-01 | PDF
    The present study examined a variety of possible predictors of complex monitoring performance. The criterion task was designed to resemble that of a highly automated air traffic control radar system containing computer-generated alphanumeric displays. Forty-five men and women were administered a battery of tests and task prior to performing the cri ...
  • Characteristics of medically disqualified airman applicants in calendar years 1977 and 1978
    Characteristics of medically disqualified airman applicants in calendar years 1977 and 1978.
    Dark, Shirley J.
    1980-10-01 | PDF
    This study provides comprehensive data reflecting pertinent denial rates with respect to the medical and general attributes of those airmen denied medical certification in calendar years 1977 and 1978. Also provided are such descriptive epidemiologic data as age, sex, occupation, class of medical certificate applied for, total flying time, and caus ...
  • Membrane protection for steel stringer tops Yaquina Bay Bridge Newport Oregon construction report
    Membrane protection for steel stringer tops : Yaquina Bay Bridge, Newport, Oregon : construction report.
    Elroy, Charles W. ;
    Beecroft, Gordon
    1980-10-01 | PDF
    The experimental feature of this project was to evaluate the application and performance of Chevron Industrial Membrane applied to the tops of steel deck stringers and other similar members as corrosion protection in conjunction with the deck replacement project on this structure.
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