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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 34141 - 34160 of 36710 results
  • Airship operation in Alaska
    Airship operation in Alaska
    Tiedemann, J. B.
    1980-05-28 | PDF
    An evaluation of the utility of lighter-than-air vehicles (airships) for Alaskan service suggests that very large vehicles operating at low speeds would transport heavy loads to remote areas with excellent fuel economy, but that the potential market for such vehicles would not justify the cost of their development in present circumstances. Equation ...
  • The current role of alcohol as a factor in civil aircraft accidents
    The current role of alcohol as a factor in civil aircraft accidents.
    Ryan, Leonard C. ;
    Mohler, Stanley R.
    1980-05-01 | PDF
    Ethyl alcohol continues as a serious adverse factor in general aviation flight safety. According to FAA figures, the level of alcohol-associated general aviation fatal accidents has remained relatively static at a 16% general level since 1969. A recent survey of the attitudes of pilots toward alcohol and flying reveals a lack of appreciation among ...
  • Evaluation of corrosion inhibitor final report
    Evaluation of corrosion inhibitor : final report.
    Law, Sheldon M. ;
    Rasoulian, Masood
    1980-05-01 | PDF
    Solution to the problem of deterioration of bridge decks due to the corrosion of embedded steel has been sought by engineers for a long time. The purpose of the study was to evaluate, under laboratory conditions, the properties of concrete using a commercially available corrosion inhibitor (Darex) as an additive to the concrete.There was a limited ...
  • Hot plant recycling of asphaltic concrete final report
    Hot plant recycling of asphaltic concrete : final report.
    Carey, Donald E. ;
    Paul, Harold R.
    1980-05-01 | PDF
    This report covers the design, construction and evaluation of two hot mix recycling projects. One project recycled two inches of existing dense-asphaltic concrete through a modified batch plant. The second project recycled a total of five inches of existing asphalt surface treatment and sand-clay-gravel base through a modified dryer-drum plant. Eac ...
  • Changes in the oxygenhemoglobin dissociation curve and time of useful function at hypobaric pressures in rats after chronic oral administration of propranolol
    Changes in the oxygen-hemoglobin dissociation curve and time of useful function at hypobaric pressures in rats after chronic oral administration of propranolol.
    McKenzie, J.M. ;
    Higgins, E.A.
    1980-05-01 | PDF
    Twenty rats were given propranolol, 1.8 mg/kg body weight, by mouth for 12 days. On day 13, these and 20 control rats were tested for time of useful function (TUF) after rapid decompression in a hypobaric chamber. The criterion for TUF was the animal's ability to remain upright in a motor-driven exercise wheel. The decompression profile was achieve ...
  • Design and evaluation of high strength concrete for girders final report
    Design and evaluation of high strength concrete for girders : final report.
    Law, Sheldon M. ;
    Rasoulian, Masood
    1980-05-01 | PDF
    The scope of the study was to make concrete mixes in the laboratory using a partial factorial, with three cement contents, two coarse aggregates and three fine-to-coarse aggregate ratios. The mixes showing the best properties and highest compressive strengths were repeated for several test repititions to determine if these strengths could be obtain ...
  • Engineering Economy and Energy Considerations Suggested Guides for Use of Lightweight Aggregates in Plant Mixed Asphalt Paving Materials
    Engineering Economy and Energy Considerations: Suggested Guides for Use of Lightweight Aggregates in Plant Mixed Asphalt Paving Materials
    Gallaway, Bob M.
    1980-05-01 | PDF
    The use of lightweight aggregate in the production of plant mixed asphalt paving materials requires consideration of specific guides to maximize the success probability of design, construction and maintenance of this surfacing material. The need, indeed, the demand for long term high friction pavement surfaces increases with the ever-increasing vol ...
  • Sulphur extended asphalt research report
    Sulphur extended asphalt : research report.
    Carey, Donald E. ;
    Paul, Harold R.
    1980-05-01 | PDF
    Extensive research has been directed toward the addition of sulphur to asphaltic concrete mixes to function as either a quality aggregate or as an asphalt cement extender. By utilizing a high sulphur/asphalt ratio sulphur extended asphalt mix, it was believed that marginal aggregate could be substituted for quality aggregate. This report discusses ...
  • Performance of soilaggregatefabric systems in frostsusceptible roads Linn County Iowa
    Performance of soil-aggregate-fabric systems in frost-susceptible roads, Linn County, Iowa.
    Hoover, J.M. ;
    Pitt, John M.
    1980-05-01 | PDF
    Thousands of miles of unimproved secondary roads in the upper midwest are annually plagued by frost action in their subgrades. Among the economic losses incurred are costs of repair and maintenance of the damaged roadway. Considerable loss of skid resistant surface aggregate occurs because of intrusion into the thaw-softened subgrade. Economic impl ...
  • Federal ship financing program
    Federal ship financing program
    United States. Department of Transportation. Maritime Administration
    1980-05-01 | PDF
    This six page brochure explains the Federal Ship Financing Program established under Title XI of the Merchant Marine Act of 1936. Point of contact is given for further information.
  • Land Use Impact of Improving State Highway 352 in a Developing Area of Dallas Texas
    Land Use Impact of Improving State Highway 352 in a Developing Area of Dallas, Texas
    Cosby, Pamela J. ;
    Buffington, Jesse L.
    1980-04-01 | PDF
    Previous studies of highway construction effects on land use have focused mainly upon the effects of the construction of new highways. In view of a new emphasis upon upgrading and expanding existing facilities rather than building new ones, the need arises for information concerning the land use effects of such improvements. This report relates the ...
  • Aircraft crashworthiness studies findings in accidents involving an aerial application aircraft
    Aircraft crashworthiness studies : findings in accidents involving an aerial application aircraft.
    Kirkham, William R. ;
    Simpson, James M.
    1980-04-01 | PDF
    Aircraft crashworthiness features are presented, as others have done, in terms of packaging principles. Modern aerial application aircraft are recognized as being the most crashworthy in the civil aviation fleet. Eighteen accidents involving an aerial application aircraft are presented in regard to crashworthiness findings, crashworthiness being th ...
  • Evaluation of experimental railroadhighway grade crossings in Louisiana interim report No 5
    Evaluation of experimental railroad-highway grade crossings in Louisiana : interim report No. 5.
    Bolourchi, Zahir ;
    Pittman, Atha E.
    1980-04-01 | PDF
    This interim report is prepared to provide a review of the performance evaluation exhibited on twenty-three (23) experimental railroad-highway grade-crossing projects in the state of Louisiana. The railroad crossings were installed during a ten-year period from June, 1970, to April, 1980, under the Federal Highway Administration "Category 2 - Exper ...
  • Survey of Virginia Aggregates for Chloride Contents Final Report
    Survey of Virginia Aggregates for Chloride Contents: Final Report
    Reynolds, John W., ;
    Clemeña, Gerardo G.
    1980-04-01 | PDF
    A major cause of concrete bridge deck deterioration is the corrosion of the reinforcing steel which, in turn, is caused by the presence of extremely high concentrations of chloride ions in the concrete. It was believed that the chloride came almost entirely from applications of deicing salts and that the contribution from the concrete mix was insig ...
  • Field Studies and Inventory of Freeway Guide Signs
    Field Studies and Inventory of Freeway Guide Signs
    Messer, Carroll J. ;
    McNees, Roger W.
    1980-04-01 | PDF
    This report is the second in a series which will document two phases of a research project conducted by the Texas Transportation Institute entitled, "Evaluating Urban Freeway Guide Signing". The research was sponsored by the Texas Department of Highways and Public Transportation in cooperation with the U.S. Department of Transportation, Federal Hig ...
  • Medical and toxicological factors in aircraft accidents
    Medical and toxicological factors in aircraft accidents.
    Kirkham, William R.
    1980-04-01 | PDF
    A number of factors operating within pilots may impair their ability to operate aircraft in a safe manner, thus accounting for some of the 83 to 87 percent of pilot 'causes' of general aviation accidents. Aircraft accident investigators should be attuned to characteristics of the accident, witness statements, and autopsy and laboratory findings tha ...
  • Motor Vehicle Demand Models Assessment of the State of the Art and Directions for Future Research
    Motor Vehicle Demand Models: Assessment of the State of the Art and Directions for Future Research
    Charles River Associates
    1980-04-01 | PDF
    The report provides an assessment of the current state of motor vehicle demand modeling. It includes a detailed evaluation of one leading large-scale econometric vehicle demand model, which is tested for both logical consistency and forecasting accuracy. Results of the model evaluation suggest improvements in the specification of existing vehicle d ...
  • Impact of Advanced Air Transport Technology Part I Advanced HighSpeed Aircraft
    Impact of Advanced Air Transport Technology: Part I: Advanced High-Speed Aircraft
    United States. Congress. Office of Technology Assessment
    1980-04-01 | PDF
    In April 1978, Congress requested that the Office of Technology Assessment (OTA) perform a technology assessment as whether the potential benefits of advanced super-sonic transport aircraft-or second-generation supersonic transports-justify increases in the levels of Federal funding for generic research and development in supersonic cruise technolo ...
  • Polymer modified concrete study final report
    Polymer modified concrete study : final report.
    Law, Sheldon M. ;
    Rasoulian, Masood
    1980-04-01 | PDF
    Four polymer modifiers, commercially known as: Dow SM Modifier "A", Thermoflex 8002, Arco-Dylex 1186, and Duralguard Modifier "E", were chosen to be evaluated in this study effort. The first three of these products were already approved by FHWA as alternates to low slump dense concrete known as Iowa Dense concrete, or epoxy coated reinforcing steel ...
  • Engineering data characterizing the fleet of US railway rolling stock Volume II Methodology and data
    Engineering data characterizing the fleet of U.S. railway rolling stock. Volume II, Methodology and data.
    Przybylinski, P.G. ;
    Anderson, G.B.
    1980-04-01 | PDF
    This report contains engineering parameter descriptions of major and distinctive freight vehicle configurations covering approximately 96% of the U.S. freight vehicle fleet. This data has been developed primarily for use in analytical simulation modeling of rail vehicles to analyses of vehicle/track dynamic interaction dynamics. To characterize loa ...
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