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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 34481 - 34500 of 35438 results
  • Experiences and Opinions of Residents Along Elevated Depressed and OnGrade Freeway Sections in Houston Texas
    Experiences and Opinions of Residents Along Elevated, Depressed, and On-Grade Freeway Sections in Houston, Texas
    Buffington, Jesse L. ;
    Burke, Dock
    1971-06-01 | PDF
    The purpose of surveying residents near an existing urban freeway was to obtain their experiences and opinions concerning its location and design and its effect upon people living nearby. The Katy Freeway in Houston was selected as the study area for the following reasons: (1) it had three major designs - below grade (depressed), on grade, and abov ...
  • A Study of Freeway Traffic Information Reported via Commercial Radio
    A Study of Freeway Traffic Information Reported via Commercial Radio
    Dudek, Conrad L. ;
    Friebele, John D.
    1971-06-01 | PDF
    The procedures used by three Houston radio stations in broadcasting freeway traffic information and the nature of the traffic information broadcasted were evaluated to obtain a better understanding of the application of commercial radio to freeway communications. The results of the study strongly suggest that commercial radio using current practice ...
  • The Effect of Surface Coatings and Bonded Overlays on Moisture Migration
    The Effect of Surface Coatings and Bonded Overlays on Moisture Migration
    Ingram, Leonard L. ;
    Furr, Howard L.
    1971-06-01 | PDF
    Tests were made on concrete specimens that had been coated with four different waterproofing materials to determine how far the coatings penetrated into the concrete. Also, coated surfaces and overlaid specimens were ponded over with 5% salt water and tap water to determine the effectiveness of each to prevent the migration of moisture into the con ...
  • StateoftheArt of WrongWay Driving on Freeways and Expressways
    State-of-the-Art of Wrong-Way Driving on Freeways and Expressways
    Friebele, John D. ;
    Messer, Carroll J.
    1971-06-01 | PDF
    A review of the state of knowledge was conducted for the purpose of evaluating the problem of wrong way driving on freeways and expressways. The extent and causes of wrong way driving as well as preventive. measures that are used or could be used have been reviewed. This is to provide additional insight in the development of a detection and communi ...
  • Highway Noise Measurement for Engineering Decisions
    Highway Noise Measurement for Engineering Decisions
    Woods, Donald L. ;
    Young, Murray F.
    1971-06-01 | PDF
    The problem of providing a practical method for evaluating highway noise using inexpensive equipment and technical personnel already available to a Highway Department has been examined. A periodic sampling procedure has been developed using a hand-held sound level meter set on the "A" weighted network. Recordings of traffic noise were taken at seve ...
  • The Effect of Right of Way Acquisition on Farm and Ranch Operating Units Summary Analysis of Three Study Areas
    The Effect of Right of Way Acquisition on Farm and Ranch Operating Units: Summary Analysis of Three Study Areas
    Meuth, Hugo G.
    1971-06-01 | PDF
    This report summarizes the effects of controlled access highways on selected farm and ranch operators in three types of agricultural areas in Texas. The first area selected for study is located along Interstate 45 in Madison County and represents an area of small ranches. Results of the study were published in Research Reports 58-4 and 58-4(8). The ...
  • Volume Value and Transportation Cost of Commodities Flowing Between Minnesota and North Dakota by Rail Truck Pipeline and Air 1969
    Volume, Value, and Transportation Cost of Commodities Flowing Between Minnesota and North Dakota by Rail, Truck, Pipeline, and Air 1969
    Portiss, Robert W ;
    Nelson, David C
    1971-05-01 | PDF
    This report contains a series of tables which depict the flow of commodities between North Dakota and Minnesota for the year 1969. The data represent commodities which originated in each state and the first market destination was in one of the states (the product, in fact, may have been transshipped after being handled in some way in North Dakota o ...
  • Aural glide slope cues their effect on pilot performance during inflight simulated ILS instrument approaches
    Aural glide slope cues : their effect on pilot performance during in-flight simulated ILS instrument approaches.
    Hasbrook, A. Howard ;
    Rasmussen, Paul G.
    1971-05-01 | PDF
    Forty instrument rated commercial and ATR pilots with 250 to 12,271 flight hours each flew ten simulated ILS approaches in a single engine, general aviation aircraft. Divided into five groups, each group used a different glide slope cue display in combination with a modified 'T' instrument panel configuration. Two types of aural glide slope cue dis ...
  • Truck and Rail Shipments of Barley Oats Rye and Flax From North Dakota Elevators 196768 and 196869
    Truck and Rail Shipments of Barley, Oats, Rye, and Flax From North Dakota Elevators, 1967–68 and 1968–69
    Nelson, David C
    1971-05-01 | 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.
  • Drainage pipe study
    Drainage pipe study.
    Azar, David G.
    1971-05-01 | PDF
    This report is the result of a research program in which various types of submerged drainage structures were evaluated in an effort to determine the life expectancy of such a structure. California-s method of predicting the behavior pattern of submerged metal pipe, California No. 643-B, was found to be applicable to Louisiana Soils, and a good corr ...
  • Soilcement design study interim report No 1
    Soil-cement design study : interim report No. 1.
    Burt, W. T. ;
    Melancon, James
    1971-05-01 | PDF
    Soil-cement base course materials design in Louisiana is based upon durability and compressive strength criteria, with the compressive strength requirements being the controlling factor in 95 percent of the designs. The findings to data have provided reasonable verification that the previous design strength of 300 psi was being achieved in the fiel ...
  • The Effects of Rainfall Intensity Pavement Cross Slope Surface Texture and Drainage Length on Pavement Water Depths
    The Effects of Rainfall Intensity, Pavement Cross Slope, Surface Texture, and Drainage Length on Pavement Water Depths
    Gallaway, Bob M. ;
    Schiller Jr, Robert E.
    1971-05-01 | PDF
    Reported herein are the results of a study concerned with determining the amount of water which can be expected to exist on various pavement types under normal ranges of pavement cross slopes, rainfall intensities, pavement textures, and drainage lengths. Equations are developed which relate these variables and their relative effects to water depth ...
  • A Qualitative Analysis of WrongWay Driving in Texas
    A Qualitative Analysis of Wrong-Way Driving in Texas
    Messer, Carroll J. ;
    Friebele, John D.
    1971-05-01 | PDF
    A questionnaire survey was conducted of state and local highway engineers and law enforcement personnel in an attempt to qualitatively determine the nature of wrong-way driving in Texas. In general, these officials considered the greatest problem with respect to wrong-way driving to be that of the drinking, drunk, or drugged driver. They also sugge ...
  • A Synthetic Coarse Aggregate Classification System Final Report
    A Synthetic Coarse Aggregate Classification System: Final Report
    Ledbetter, W. B. ;
    Moore, W. M.
    1971-05-01 | PDF
    This, the final report on the study, represents the recommended synthetic coarse aggregate classification system and performance standards for presently envisioned uses within the highway system. The classification system divides the material into two classes-bloated and non-bloated-and each class into several groups of descending physical requirem ...
  • Evaluation of Asphalt Structural Performance
    Evaluation of Asphalt Structural Performance
    Britton, S. C. ;
    Bynum Jr, Douglas
    1971-05-01 | PDF
    A method of fundamental evaluation of asphalt cement structural performance was examined by measurement of the mechanical behavior (load response and failure) of candidate asphaltic concrete mixtures by application of direct uniaxial tension and compression, splitting tension, triaxial tension, and double lap shear test procedures. The mixtures wer ...
  • The Relationship of Vehicle Paths to Highway Curve Design
    The Relationship of Vehicle Paths to Highway Curve Design
    Glennon, John C. ;
    Weaver, Graeme D.
    1971-05-01 | PDF
    Current design practice for horizontal curves assumes that vehicles follow the path of the highway curve with geometric exactness. To examine the adequacy of this assumption, photographic field studies were conducted of vehicle maneuvers on highway curves. Results of the field studies indicate that most vehicle paths, regardless of speed, exceed th ...
  • Erosion control study final report Part II roadside channels
    Erosion control study : final report : Part II : roadside channels.
    Cox, Allen L. ;
    Adams, R. J.
    1971-04-01 | PDF
    The objective of the study were:1) To evaluate present methods and develop new methods for establishing a permanent vegetative cover.2) To develop erosion control practices for existing highway drains and ditches.3) To develop highway bank stabilization methods that do not require top soil from adjacent agricultural lands.
  • Combined effects of altitude and high temperature on complex performance
    Combined effects of altitude and high temperature on complex performance.
    Chiles, W.D. ;
    Iampietro, P.F.
    1971-04-01 | PDF
    Nine well-trained subjects were tested on a complex performance device designed to assess functions of relevance to aircrew activities. The tests, which involved tracking, monitoring, and mental arithmetic, were performed during exposure to altitude (14,000 feet) and heat (60 C.) both singly and in combination.Several physiological measures were ta ...
  • Automated differential fluorometric analysis of norepinephrine and epinephrine in blood plasma and urine
    Automated differential fluorometric analysis of norepinephrine and epinephrine in blood plasma and urine.
    Fiorica, Vincent ;
    Moses, Russell
    1971-04-01 | PDF
    An automated fluorometric trihydroxyindole procedure is described for the measurement of norepinephrine (NE) and epinephrine (E) in blood plasma or urine. The method employs conventional techniques for isolation of the catecholamines by alumina column chromatography. Column eluates are analyzed in an AutoAnalyzer system incorporating two fluoromete ...
  • Aeromedical transportation and general aviation
    Aeromedical transportation and general aviation.
    Gibbons, Harry L. ;
    Fromhagen, Carl
    1971-04-01 | PDF
    The advantages of aircraft in providing military medical evacuation are well documented. Training and experience have resulted in a reliable and safe military medical evacuation system. Many studies have been done or are in process which pertain to civil emergency helicopter evacuation. Fixed-wing secondary ambulance service is growing at a rapid r ...
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