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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 34261 - 34280 of 35412 results
  • Light Rail Transit Systems A Definition and Evaluation
    Light Rail Transit Systems - A Definition and Evaluation
    Vuchic, Vukan R.
    1972-10-01 | PDF
    Rail transit represents a family of modes ranging from light rail to regional rapid transit systems and it can be utilized in a number of different cities and types of applications. Many European cities of medium size employ very successfully light rail mode for gradual upgrading of transit service into partially or fully separated high speed, reli ...
  • FPS11 Flexible Pavement System Computer Program Documentation
    FPS-11 Flexible Pavement System Computer Program Documentation
    Orellana, Hugo E.
    1972-10-01 | PDF
    This report gives the documentation of the computer program FPS-11 used for implementation of the flexible pavement design system. This documentation is also in machine readable form to make possible a continuing documentation system for updates and improvements in the Flexible Pavement System (FPS) series of computer programs. Included in this rep ...
  • Demonstration of visibility measuring device to detect highway fog conditions
    Demonstration of visibility measuring device to detect highway fog conditions.
    Lane, Francis D. ;
    Hannaman, Linda
    1972-09-01 | PDF
    No Description
  • GPSS360 computer models to simulate aircraft passenger emergency evacuations
    GPSS/360 computer models to simulate aircraft passenger emergency evacuations.
    Fold, Earl D. ;
    Garner, J.D.
    1972-09-01 | PDF
    Live tests of emergency evacuation of transport aircraft are becoming increasingly expensive as the planes grow to a size seating hundreds of passengers. Repeated tests, to cope with random variations, increase these costs, as well as risks of injuries to participants. A method of simulating such repeated tests, by use of computer models based on s ...
  • Binaural processing of speech in light aircraft
    Binaural processing of speech in light aircraft.
    Tobias, Jerry V.
    1972-09-01 | PDF
    Laboratory studies have shown that the human binaural auditory system can extract signals from noise more effectively when the signals (or the noise) are presented in one of several interaurally disparate configurations. Questions arise as to whether these laboratory studies in anechoic or semi-anechoic spaces can be generalized to more reverberant ...
  • Field Measurements of Lateral Earth Pressures on a Cantilever Retaining Wall
    Field Measurements of Lateral Earth Pressures on a Cantilever Retaining Wall
    Coyle, Harry M. ;
    Bartoskewitz, Richard E.
    1972-09-01 | PDF
    Terra Tee pneumatic and Geonor vibrating wire earth pressure cells are used to measure the lateral earth pressures acting on a typical cantilever retaining wall. Accurate measurements of the lateral movements of the wall are made during and after backfilling. Data are presented for both pressure measurements and wall movements covering a period of ...
  • Variables Associated with Automobile Tire Hydroplaning
    Variables Associated with Automobile Tire Hydroplaning
    Stocker, A. J. ;
    Lewis, J. M.
    1972-09-01 | PDF
    A study of the wet weather characteristics of four different pavements and eight different tires is presented. The pavements studied were a portland cement concrete, a bituminous surface treatment, a hot mix asphalt and a jennite surface. The tires studied were several bias ply tires with different tread depths, a wide tire and a test standard tire ...
  • K value correlation study
    "K" value correlation study.
    Myers, John C. ;
    Kinchen, Richard W.
    1972-08-01 | PDF
    One objective of this study was to determine what correlation existed between the modulus of subgrade reaction as determined by the Plate Bearing Test and the deflection determined by the first snsor of the Lane Wells "Dynaflect". The Research and Development Section of the Louisiana Department of Highways has used the Lane Wells "Dynaflect" and is ...
  • Behavioral changes from chronic exposure to pesticides used in aerial application effects of Phosdrin on the performance of monkeys and pigeons on variable interval reinforcement schedules
    Behavioral changes from chronic exposure to pesticides used in aerial application : effects of Phosdrin on the performance of monkeys and pigeons on variable interval reinforcement schedules.
    Lewis, Mark F. ;
    Mertens, Henry W.
    1972-08-01 | PDF
    The need for study of behavioral difficulties resulting from exposure to pesticides is based upon reports of behavioral difficulties in aerial applicators following organophosphate poisoning and is underscored by a recent plane crash of a cropduster pilot in which prior exposure to several organophosphate pesticides was implicated.The present study ...
  • Effects of Cement on Moisture Migration in Concrete Phase A Laboratory Study of Moisture Migration in Hardened Cement Paste
    Effects of Cement on Moisture Migration in Concrete Phase A: Laboratory Study of Moisture Migration in Hardened Cement Paste
    Lankard, David R. ;
    Walker, Alvin J
    1972-08-01 | PDF
    The Columbus Laboratories of Battelle Memorial Institute is currently conducting a study of the effect of cement on moisture migration in concrete as related to the problem of D-cracking of portland cement concrete pavements. The study began on December 31, 1970, and is planned as a 3-year program. The work plan, approved by the policy committee of ...
  • FiniteElement Analysis of Bridge Decks
    Finite-Element Analysis of Bridge Decks
    Abdelraouf, Mohammad R. ;
    Matlock, Hudson
    1972-08-01 | PDF
    A finite element method is presented for the analysis of bridge decks treated as shell-type structures. The method can be used successfully for the analysis of a wide variety of highway bridges such as slab-type bridges, beam slab bridges, box girder bridges, and curved bridges. The deck is discretized as an assemblage of flat triangular elements. ...
  • A Summary of DiscreteElement Methods of Analysis for Pavement Slabs
    A Summary of Discrete-Element Methods of Analysis for Pavement Slabs
    Hudson, W. Ronald ;
    Treybig, Harvey J.
    1972-08-01 | PDF
    This report summarizes the work in Research Project 3-5-63-56 which has been conducted by the Center for Highway Research. The project staff has produced 27 research reports dealing with the analysis and design of structural members including beam columns, grid-beam systems, slabs, and slabs on foundation. This report summarizes the portions of the ...
  • Concrete Resurfacing Overlays for Two Bridge Decks
    Concrete Resurfacing Overlays for Two Bridge Decks
    Furr, Howard L. ;
    Ingram, Leonard L.
    1972-08-01 | PDF
    Two AASHO H-20 highway bridges in the Texas Highway Department system have received experimental resurfacing overlays of portland cement concrete. This paper describes the overlay operations, performance, and costs of the two installations. One deck, Colorado River bridge, was on a two-lane bridge with a 28 ft roadway 480 ft long (13,440 sq ft). Th ...
  • Detection of Bridge Deck Deterioration
    Detection of Bridge Deck Deterioration
    Moore, William M.
    1972-08-01 | PDF
    Delamination is probably the most serious form of deterioration which is commonly found in bridge decks. It ultimately results in large scale spalling necessitating costly repairs. This type of failure is believed to be caused chiefly from salt induced corrosion of the reinforcing steel. An instrument designed to detect delamination, and tests cond ...
  • An Instrument System for Measuring Pavement Deflections Produced by Moving Traffic Loads
    An Instrument System for Measuring Pavement Deflections Produced by Moving Traffic Loads
    Swift, Gilbert
    1972-08-01 | PDF
    This report describes a feasibility study which has led to the development of a "first generation" instrument system for measuring transient pavement deflections. Accelerometers embedded in the pavement structure are employed to sense the basic motion. Dual analog integration is utilized to obtain and record output indications proportional to displ ...
  • A Comprehensive Structural Design for Stabilized Pavement Layers
    A Comprehensive Structural Design for Stabilized Pavement Layers
    Hadley, William O. ;
    Hudson, W. Ronald
    1972-08-01 | PDF
    A system is presented which can be used for the structural design of stabilized pavement layers. The basis for the system is primarily the prevention of tensile failures in the surface and subbase layers of a three-layer pavement structure and can be applied to take full advantage of those highway materials which possess cohesion, or tensile streng ...
  • Practical Method of Conducting the Indirect Tensile Test
    Practical Method of Conducting the Indirect Tensile Test
    Anagnos, James N. ;
    Kennedy, Thomas W.
    1972-08-01 | PDF
    This report describes a practical method of conducting the indirect tensile test and a method of analyzing the test results to determine the tensile properties of all types of stabilized materials except cohesionless materials. The test methods are reported in two parts. The first describes the relatively simple equipment and test procedures requir ...
  • Truck and Rail Shipments of Hard Red Spring and Durum Wheat From North Dakota Country Elevators 19701971
    Truck and Rail Shipments of Hard Red Spring and Durum Wheat From North Dakota Country Elevators 1970–1971
    Anderson, Dale O.
    1972-07-01 | PDF
    The major emphasis in this report is to illustrate the distribution methods and patterns of Hard Red Spring and Durum Wheat from North Dakota origins. In addition, trends in shipments by months are identified. The patterns of distribution and monthly shipments for 1970-1971 are compared to previous years' data.
  • Project FARE Task I Report Urban Mass Transportation Industry Information Requirements
    Project FARE Task I Report: Urban Mass Transportation Industry Information Requirements
    Arthur Andersen & Co.
    1972-07-01 | PDF
    This report is the product of Task I of the financial accounting and reporting elements (FARE) project sponsored by UMTA under project IT-06-0034. The primary objective of Project FARE (Financial Accounting and Reporting Elements) is to develop and test a candidate reporting system which will accumulate transit industry financial and operating resu ...
  • Truck and Rail Shipments of Barley Oats Rye and Flax From North Dakota Elevators 196970 and 197071
    Truck and Rail Shipments of Barley, Oats, Rye and Flax From North Dakota Elevators 1969–70 and 1970–71
    Anderson, Dale O.
    1972-07-01 | PDF
    The primary purpose of this report is to illustrate the distribution methods and patterns of barley and oats. Basic data regarding this activity for rye and flax are also reported.
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