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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 33141 - 33160 of 35438 results
  • Some Notes on Terminal Process Control Computers
    Some Notes on Terminal Process Control Computers
    Tuan, Paul L
    1979-04-20 | PDF
    This informal note is the first of a series of preliminary material to record in capsule form the findings and observations relative to railroad terminal computers. This material will eventually serve as input to the preparation of the yard-design handbook. This note documents some of the observations derived during recent visits to the Southern Pa ...
  • Development and Evaluation of a Belt Restraint System for Small Cars Using Force Limiting
    Development and Evaluation of a Belt Restraint System for Small Cars Using Force Limiting
    Walsh, Michael J. ;
    Kelleher, Barbara J.
    1979-04-01 | PDF
    Development and evaluation of a force limited belt restraint system for small cars has been completed at Calspan Corporation. The belt restraint system with passive capability was developed through the use of three-dimensional computer simulations and sled tests. The system has demonstrated performance evaluation criteria values less than or equal ...
  • Retarder Control Algorithms of Knig Wong and WABCO
    Retarder Control Algorithms of König, Wong and WABCO
    Eckerle, Joseph S
    1979-03-20 | PDF
    The first step to improving the performance of retarder control algorithms is to conduct an exhaustive study of existing algorithms. Retarder control algorithms described in König’s 1969 paper and those used by WABCO (as revealed in their patents) are described. Two new algorithms proposed by Peter Wong are also described. The König paper is import ...
  • Polymer Concrete Development and Use in Oregon
    Polymer Concrete Development and Use in Oregon
    Quinn, William J.
    1979-03-15 | PDF
    The original work plan specified that laboratory tests would be conducted to determine the most suitable resins for overlay work. It must be pointed out that the Oregon State Highway Division was not set up to do polymer research, but only to test existing resin formulations that were readily available from chemical companies. After a literature se ...
  • East Deerfield Yard Mainline Relocation
    East Deerfield Yard – Mainline Relocation
    Sakasita, Masami
    1979-03-11 | PDF
    One of the major problems at the East Deerfield railroad yard is that the mainline goes through the middle of the yard, thus creating a substantial number of mainline crossing movements between one side of the yard and the other. The purpose of this short working note is to document the alternatives considered in the mainline relocation study proce ...
  • OrderofMagnitude Comparisons of Various Energy Dissipating Mechanisms
    Order-of-Magnitude Comparisons of Various Energy Dissipating Mechanisms
    Kiang, Robert L
    1979-03-08 | PDF
    This note compares the order of magnitude of various energy dissipating mechanisms in a classification yard, including: Rolling Resistance on Tangent Track, Rolling Resistance on a Curved Track, Wind Resistance, Switch Resistance, Conventional Retarders, Dowty Retarders, ASEA Spiral Retarders. It takes 22 Dowty Retarders or 3 ASEA Retarders to equa ...
  • Laboratory correlation of soil swell potential final report
    Laboratory correlation of soil swell potential : final report.
    Melancon, James
    1979-03-01 | PDF
    The objective of the study was to determine if a correlation exists between the Potential Volume Change Test and the Potential Vertical Rise Test as compared to the Third Cycle Expansion Pressure Test. In order to accomplish this objective, samples of soils in selected areas of the State were obtained and subjected to the above tests. A direct comp ...
  • A comparison of the job attitudes and interest patterns of air traffic and airway facility personnel
    A comparison of the job attitudes and interest patterns of air traffic and airway facility personnel.
    Smith, Roger C.
    1979-03-01 | PDF
    Air traffic control specialists (ATCSs) and airway facility technicians (AFTs) were compared on measures of job attitudes and interests. A total of 792 ATCSs and 2,366 AFTs completed the Strong Vocational Interest Blank (SVIB) and questionnaires concerning job satisfaction and job attitudes. Both groups indicated high overall job satisfaction and g ...
  • The selection of air traffic control specialists two studies demonstrating methods to insure an accurate validity coefficient for selection devices
    The selection of air traffic control specialists : two studies demonstrating methods to insure an accurate validity coefficient for selection devices.
    Boone, James O. ;
    Lewis, Mary A.
    1979-03-01 | PDF
    There are several conditions that can influence the calculation of the statistical validity of a test battery such as that used to selected Air Traffic Control Specialists. Two conditions of prime importance to statistical validity are recruitment procedures and the accuracy of the data base. The recent edition (1978) of the Federal Uniform Guideli ...
  • Oxygen equipment and rapid decompression studies
    Oxygen equipment and rapid decompression studies.
    McFadden, E.B.
    1979-03-01 | PDF
    This is a collection of reports of evaluations of the protective capability of various oxygen systems at high altitude and during rapid decompression. Results of these studies were presented at scientific meetings and/or published in preprints or proceedings with limited distribution.
  • Guidelines for Mountain Stream Relocations in North Carolina
    Guidelines for Mountain Stream Relocations in North Carolina
    Wingate, P.J. ;
    Bonner, W.R.
    1979-03-01 | PDF
    Relocations of North Carolina's mountain trout streams traditionally have beena routine practice during road construction. This practice has been extremelydestructive to the state's fishery, wildlife and recreational sources, because proper environmental consideration was not given to these values during project designs. These values, however, must ...
  • Grain Transportation Some Current Problems
    Grain Transportation: Some Current Problems
    Griffin, Gene C.
    1979-03-01 | PDF
    Current problems which exist in North Dakota grain transportation are varied and many, with freight rates being a chief issue. Problems concerning freight rates include, but are not limited to, the absolute level of the rate relative the cost of providing the service, monopoly rates on such traffic as malting barley to Minneapolis/St. Paul, competi ...
  • Evaluation of Oregons first hot mix asphalt recycling project Woodburn Oregon 1977
    Evaluation of Oregon's first hot mix asphalt recycling project : Woodburn, Oregon, 1977.
    Whitcomb, William G. ;
    Beecroft, Gordon
    1979-03-01 | PDF
    Pavement recycling has been suggested as a viable alternative to more conventional methods of pavement rehabilitation as a means of offsetting some of the problems resulting from spiraling energy costs and shortages of raw materials. This paper presents a discussion of the Woodburn Asphalt Recycling Paving Project, Oregon's first experience at larg ...
  • Effects of Recent Vehicle Design Changes on Safety Performance Volume II
    Effects of Recent Vehicle Design Changes on Safety Performance Volume II
    Redmond, D. ;
    Schmitz, B.
    1979-03-01 | PDF
    Design changes in 1974-1977 model year passenger cars have been identified and a preliminary evaluation has been made of the safety effects of design changes inspired by fuel economy requirements. The following appendices are enclosed: Ranking of changes in curb weight 1974 to 1977 model year passenger cars; Unranked tabulation of scaled fractional ...
  • Effects of Recent Vehicle Design Changes on Safety Performance Volume I
    Effects of Recent Vehicle Design Changes on Safety Performance Volume I
    Redmond, D. ;
    Schmitz, B.
    1979-03-01 | PDF
    Design changes in 1974-1977 model year passenger cars have been identified and a preliminary evaluation has been made of the safety effects of design changes inspired by fuel economy requirements. The 1977 General Motors full-size cars and the Volkswagen Rabbit were found to be the only significant design change vehicles. These vehicles do not demo ...
  • Bus Service Evaluation Procedures A Review
    Bus Service Evaluation Procedures: A Review
    Attanucci, John P. ;
    Becker, Jeff
    1979-03-01 | PDF
    The report presents the results of a literature review and survey of 71 transit properties in the U. S. and Canada regarding bus service evaluation procedures currently in use. The focus of the study was to identify service performance indicators and criteria used to evaluate bus service on a route-by-route basis. Three types of evaluation indicato ...
  • Land Use Impact of Improving Antoine Drive in a Developed Residential Area in Houston Texas
    Land Use Impact of Improving Antoine Drive in a Developed Residential Area in Houston, Texas
    Herndon Jr, Cary W. ;
    Buffington, Jesse L.
    1979-03-01 | PDF
    Previous studies on effects of highway construction upon 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 effects of such improvements upon land use. This report r ...
  • Methodology for Predicting the Reflection Cracking Life of Asphalt Concrete Overlays
    Methodology for Predicting the Reflection Cracking Life of Asphalt Concrete Overlays
    Germann, Frederick P. ;
    Lytton, Robert L.
    1979-03-01 | PDF
    An experimental testing procedure has been established in the report, for quantitative analysis of overlays designed to reduce reflection cracking. From this testing procedure the overlay scheme that shows the most resistance to cracking can be chosen. The procedure uses crack propagation tests on overlay samples which are conducted on a machine ca ...
  • Land Use Impact of Improving Gessner Road in a Developing Area in Houston Texas
    Land Use Impact of Improving Gessner Road in a Developing Area in Houston, Texas
    Cosby, Pamela J. ;
    Herndon Jr, Cary W.
    1979-03-01 | PDF
    Previous studies on the effects of highway construction upon 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 effects of such improvements upon land use. This repo ...
  • ConcretePolymer Materials for Highway Applications
    Concrete-Polymer Materials for Highway Applications
    Fowler, David W. ;
    Paul, Donald R
    1979-03-01 | PDF
    The use of concrete-polymer materials for highway applications has been studied with the objective of providing durable materials that would reduce maintenance in highway structures. Several significant developments resulted from this research. Partial-depth polymer impregnation was developed for improving durability of bridge decks. The process in ...
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