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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 34421 - 34440 of 35438 results
  • Discrimination of shortduration twopulse flashes as a function of signal luminance and method of measurement
    Discrimination of short-duration (two-pulse) flashes as a function of signal luminance and method of measurement.
    Mertens, Henry W. ;
    Lewis, Mark F.
    1971-11-01 | PDF
    The recent introduction of strobe lights for anticollision purposes raises the possibility of using temporal patterns of short duration flashes as information carrying signals. The current experiments are concerned with the detection of the minimum duration dark interval between signal light pulses as a function of signal luminance and the psychoph ...
  • The acute toxicity of brief exposures to HF HCl NO2 and HCN singly and in combination with CO
    The acute toxicity of brief exposures to HF, HCl, NO2 and HCN singly and in combination with CO.
    Higgins, Arnold E. ;
    Fiorica, Vincent
    1971-11-01 | PDF
    Experiments were conducted with animals to determine the toxic effect of short-term exposures to some of the products produced in aircraft fires; the products were tested both singly and in combination with carbon monoxide. These studies show the toxicity rankings of the four materials tested to be HCN, NO2, HF and HCl, in decreasing order. Carbon ...
  • The use of far infrared radiation for the detection of concealed metal objects
    The use of far infra-red radiation for the detection of concealed metal objects.
    Scotto, Michael
    1971-11-01 | PDF
    The use of infra-red radiation for the detectionof conceal ed metal objects has been investiga ted boththeoretically and experimentally. The investigation wasdivided into two phases, one which considered passivetechniques, and another which involved active sources ofradiation to probe the subject. Because of the limitedamount of time and equipment ...
  • Evaluation of raised pavement markers
    Evaluation of raised pavement markers.
    LeBlanc, E. J.
    1971-11-01 | PDF
    This study was initiated for the purpose of researching of markers were chosen for use in this study and remained as "guinea pigs" throughout the program for the sake of uniformity.Several installations were made on heavily traveled roads in the Baton Rouge area using these four types. Traffic wear and breakdown properties of these markers were car ...
  • Feasibility of Federal Assistance for Urban Mass Transportation Operating Costs
    Feasibility of Federal Assistance for Urban Mass Transportation Operating Costs
    United States. Department of Transportation
    1971-11-01 | PDF
    The contents of the report include the present financial and operating condition of urban mass transportation; the present financial assistance programs for urban mass transportation; an analysis of alternative federal assistance programs; and the service and policy innovations to improve mass transit.
  • The use of far infrared radiation for the detection of concealed metal objects
    The use of far infra-red radiation for the detection of concealed metal objects.
    Scotto, Michael
    1971-11-01 | PDF
    Abstract The use of infrared radiation for the detectionof concealed metal objects has been investigated boththeoretically and experimentally. The investigation wasdivided into two phases, one which considered passivetechniques, and another which involved active sources ofradiation to probe the subject. Because of the limitedamount of time and equi ...
  • Program Documentation Manual for the Texas Trip Distribution Package
    Program Documentation Manual for the Texas Trip Distribution Package
    Benson, J. D. ;
    Pearson, David F.
    1971-11-01 | PDF
    The Texas Trip Distribution Package is a collection of computer programs designed to perform trip distributions featuring the application of a constrained interactance model. Other programs, available in the package, provide full support. The purpose of this manual is to provide data processing personnel with a link between the Operating Manual for ...
  • Motor Carrier Transportation of Agricultural Products in North Dakota 1969
    Motor Carrier Transportation of Agricultural Products in North Dakota 1969
    Nichols, Ronald Q ;
    Nelson, David C
    1971-10-01 | PDF
    The general purpose of this study is to estimate the volume of agricultural products transported by motor carrier to, from, and within North Dakota. The specific objectives are: 1. To determine the volume of agricultural products transported by motor carrier out of, into, and within North Dakota by type of commodity, by origin, and by destination. ...
  • Alcohol and disorientationrelated responses V The influence of alcohol on positional rotatory and coriolis vestibular responses over 32hour periods
    Alcohol and disorientation-related responses. V, The influence of alcohol on positional, rotatory, and coriolis vestibular responses over 32-hour periods.
    Hill, Ronald J. ;
    Collins, William E.
    1971-10-01 | PDF
    There are some indications that the systems most closely associated with disorientation responses--the visual and vestibular systems--may continue to show effects of alcohol ingestion for periods in excess of 24 hours. These effects may be evident both in static vestibular reactions and in dynamic reactions such as those which produce Coriolis vest ...
  • Air traffic aptitude test measures of military and FAA controller trainees
    Air traffic aptitude test measures of military and FAA controller trainees.
    Cobb, Bart B.
    1971-10-01 | PDF
    The study concerns the experimental use of seven commercially published aptitude tests at the Keesler AFB and Clynco NAS air traffic control (ATC) training schools, the determination of relationships between the aptitude scores and training-course performance measures of Army, Air Force, Marine Corps, and Navy students, and an assessment of the pot ...
  • Motor Carrier Transportation of NonAgricultural Products in North Dakota 1969
    Motor Carrier Transportation of Non-Agricultural Products in North Dakota 1969
    Binkley, Gregory R ;
    Nelson, David C
    1971-10-01 | PDF
    The primary purpose of this study is to estimate the volume of nonagricultural commodities transported by motor carrier to, from, and within North Dakota. The specific objectives are: 1) to determine the total volume of nonagricultural products transported by motor carrier to, from, and within North Dakota, and to determine the volume of the respec ...
  • Paving block study final report
    Paving block study : final report.
    Cox, Allen L.
    1971-10-01 | PDF
    The Louisiana Department of Highways has conducted field tests with an experimental revetment consisting of cellular concrete revetment blocks used in conjunction with plastic filter cloth and/or vegetation such as grass or vines. The precast blocks are of vibrated concrete, weigh 13 lbs. and are approximately 8" square by 4" deep. Each block has a ...
  • Measurement of Vehicle Contamination by Exhaust Gases 1971
    Measurement of Vehicle Contamination by Exhaust Gases [1971]
    Mathews, Steven M.
    1971-10-01 | PDF
    An investigation of the concentration of carbon monoxide (CO) within the passenger compartment of motor vehicles has been made. A sample handling system has been developed to measure the concentrations of CO at as many as six locations inside and outside of a motor vehicle. To use this system effectively, a test procedure was developed with sixteen ...
  • Interim Report of Research on FullScale Prestressed Panel Type Bridge
    Interim Report of Research on Full-Scale Prestressed Panel Type Bridge
    Buth, Eugene C. ;
    Furr, Howard L.
    1971-10-01 | PDF
    One span of a full-scale highway bridge was constructed and subjected to cyclic axle loads at three load positions. The bridge was constructed with four Texas Highway Department Type B prestressed beams, prestressed panels for the lower portion of the deck, and cast-in-place concrete which bonded the prestressed elements together and formed the upp ...
  • Tensile Behavior of Subbase Materials Under Repetitive Loading
    Tensile Behavior of Subbase Materials Under Repetitive Loading
    Moore, Raymond K. ;
    Kennedy, Thomas W.
    1971-10-01 | PDF
    Results of a study of the fatigue characteristics of asphalt-treated, cement-treated, and lime-treated subbase materials indicated that the indirect tensile test can be used satisfactorily to evaluate the fatigue properties of treated materials under repeated tensile stresses. In addition, the general nature of the relationship between applied tens ...
  • Convention for the Suppression of Unlawful Acts Against the Safety of Civil Aviation
    Convention for the Suppression of Unlawful Acts Against the Safety of Civil Aviation
    International Conference on Air Law (1971 : Montreal, Canada)
    1971-09-23 | PDF
    The Montreal Convention defines a wide spectrum of unlawful acts against the safety of civil aviation and the Contracting States have undertaken to make these offences punishable by severe penalties. The Convention contains detailed provisions on jurisdiction, custody, prosecution and extradition of the alleged offender. The Montreal Convention doe ...
    Supporting Files
  • AASHO correlation study final report
    AASHO correlation study : final report.
    Shah, S. C. ;
    Law, Sheldon M.
    1971-09-01 | PDF
    The application of the design concepts developed at the AASHO road test to Louisiana in-service pavements are presented. In order to correlate the level of performance determined at the road test with that of Louisiana pavements, present serviceability index (psi) determinations were made on 137 flexible sections and 51 rigid sections. Sixty-one of ...
  • Field Test Plan for Evaluating the Cooperative Breath Analyzer
    Field Test Plan for Evaluating the Cooperative Breath Analyzer
    Oates, John Francis ;
    Jacobs, Harold H.
    1971-09-01 | PDF
    This report provides basic inputs to the Transportation Systems Center for their continuing development and evaluation of cooperative breath analyzers. Its primary purpose is to indicate a number of potential field test sites and to describe various available testing modalities.
  • Evaluation of Pressure Cells Used for Field Measurements of Lateral Earth Pressures on Retaining Walls
    Evaluation of Pressure Cells Used for Field Measurements of Lateral Earth Pressures on Retaining Walls
    Corbett, David A. ;
    Coyle, Harry M.
    1971-09-01 | PDF
    Commercially available total earth pressure cells and gaging systems are investigated. The principles of operation for nine commercially available pressure cells are presented, and the manufacturers performance ratings are summarized. The performance characteristics of four types of pressure cells selected for this preliminary study are determined ...
  • Traffic Projection and Assignment
    Traffic Projection and Assignment
    Stover, Vergil G. ;
    Benson, J. D.
    1971-09-01 | PDF
    Two traffic assignment packages were developed for use on the Texas Highway Department's IBM 360/50 Computer System. The Texas Small Network Package, which will accommodate small networks of up to 4,000 nodes, implements a new algorithm which allows the trees to be built and the network simultaneously loaded. The Texas Large Network Package, which ...
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