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Showing 35321 - 35340 of 36747 results
  • Influence of Water Depths on Friction Properties of Various Pavement Types
    Influence of Water Depths on Friction Properties of Various Pavement Types
    Gallaway, Bob M. ;
    Rose, Jerry G.
    1974-08-01 | PDF
    Reported herein are the results of the final phase of THD Study 2-8-69-138. This phase of the study is concerned with the effect of various water depths (obtained with a rain simulator) on the friction properties of various pavement textures at different levels of vehicular speeds and tire-tread depths, tire pressures, and tire types. Equations rel ...
  • CostEffectiveness Program for Roadside Safety Improvements on Texas Highways Volume 1 Procedures Manual
    Cost-Effectiveness Program for Roadside Safety Improvements on Texas Highways Volume 1: Procedures Manual
    Weaver, Graeme D. ;
    Post, Edward R.
    1974-08-01 | PDF
    The cost-effectiveness analysis procedure for roadside safety improvement evaluation has been developed on an immediate implementation basis. This report documents the procedures to be applied in conducting the physical roadside hazard inventory and recommending safety improvement alternatives on Texas highways--both controlled and non-controlled a ...
  • Correlation of the Texas Highway Department Cone Penetrometer Test with UnconsolidatedUndrained Shear Strength of Cohesive Soils
    Correlation of the Texas Highway Department Cone Penetrometer Test with Unconsolidated-Undrained Shear Strength of Cohesive Soils
    Hamoudi, Manaf M. ;
    Coyle, Harry M.
    1974-08-01 | PDF
    Correlations were established between the Texas Highway Department Cone Penetrometer Test and the unconsolidated-undrained shear strength for cohesive soils. Both field and laboratory investigations were conducted to obtain the data necessary to establish the correlations. The field investigations included seven borings taken at four different site ...
  • MidBlock Access Effects on Arterial Streets
    Mid-Block Access Effects on Arterial Streets
    Exter, J. O. ;
    Stover, Vergil G.
    1974-08-01 | PDF
    The combined function of the urban arterial, that is, providing for traffic movement and land access, continues to be a major problem. Arterials are designed and built to serve primarily the movement function. As the abutting land develops, access to individual land parcels tends to reduce the effectiveness of the arterial in serving its primary fu ...
  • Rapid field method for determining the polish susceptibility of carbonate aggregates
    Rapid field method for determining the polish susceptibility of carbonate aggregates.
    Patty, Tom S.
    1974-08-01 | PDF
    A quick and simple method by which limestones and related carbonatepaving aggregates can be rated as to their relative susceptibility topolishing has been successfully applied to a wide number of aggregatesources used on Texas Highway projects. The technique involves takinga small representative sample of the aggregate and subjecting it to adilute ...
  • The Public Response to the Secretary of Transportations Rail Services Report Rail Service in the Midwest and Northeast Region Volume I New England States
    The Public Response to the Secretary of Transportation's Rail Services Report: Rail Service in the Midwest and Northeast Region, Volume I: New England States
    United States. Interstate Commerce Commission
    1974-08-01 | PDF
    Volume I of The Public Response to the Secretary of Transportation's Rail Services Report is part of a three-volume Rail Services Planning Office report summarizing public testimony, written submissions, shipper evidence, state and local concerns, and agency comments on the Secretary of Transportation's 1974 rail service recommendations. Volume I c ...
  • Experimental expansion bearing study Interim report
    Experimental expansion bearing study : Interim report.
    1974-07-17 | PDF
    No Description
  • Experimental deck joint seals interim report
    Experimental deck joint seals : interim report.
    1974-07-17 | PDF
    No Description
  • Department of Transportation News Urban Mass Transportation Administration UMTA 12174
    Department of Transportation News: Urban Mass Transportation Administration: UMTA 121-74
    United States. Department of Transportation. Urban Mass Transit Administration
    1974-07-10 | PDF
    "Press release for the Urban Mass Transportation Administration (now Federal Transit Administration). This press release announces the release of procedures through which private, non-profit corporations and associations may receive Federal funds for providing transportation services to the elderly and handicapped."
  • Development of Maintenance Methods and Cost Codes
    Development of Maintenance Methods and Cost Codes
    Epps, Jon A. ;
    Larrimore, Jr. I. E.
    1974-07-01 | PDF
    Close cooperation among Texas Highway Department district maintenance operational personnel, central office representatives and the Texas Transportation Institute study team together with a review of the literature provided the necessary information to formulate a list of maintenance activities and to develop maintenance methods and cost codes. The ...
  • Experimental use of flexible guideposts in Oregon PPM 2063 Category 2 Project final report
    Experimental use of flexible guideposts in Oregon : PPM 20-6.3, Category 2 Project : final report.
    Oregon. Dept. of Transportation. Highway Division
    1974-06-25 | PDF
    During the early months of 1971 the Oregon State Highway Division requested and received FHWA approval to install flexible guideposts in locations where sight post losses from collisions would be expected to be high. The request was to install the flexible posts as an experimental feature under the provisions of PPM 20-6.3 as a Category 2 Project. ...
  • Evaluation of a clam shell embankment bridging marshland soil final report
    Evaluation of a clam shell embankment bridging marshland soil : final report.
    Kinchen, Richard W. ;
    Melancon, J. L.
    1974-06-01 | PDF
    The Louisiana highway network extends southward to the Gulf Coast where it serves a populace which is rapidly expanding as oil companies increase their activities in the area. The swamplands and marshlands which comprise much of south Louisiana represent construction problems which are perhaps best appreciated by the highway engineer. The root of t ...
  • A correlation of various smoothness measuring systems for asphaltic concrete surfaces final report
    A correlation of various smoothness measuring systems for asphaltic concrete surfaces : final report.
    Shah, S. C.
    1974-06-01 | PDF
    The primary purpose of this research effort was to assess the presently specified smoothness criteria for new construction of asphaltic concrete surfaces using various rolling straightedges and roadmeters. This assessment was to be based on the correlation between the various systems of smoothness (or roughness) measuring devices and the precision ...
  • A laboratory evaluation of rubberasphalt paving mixtures final report
    A laboratory evaluation of rubber-asphalt paving mixtures : final report.
    Carey, Donald E.
    1974-06-01 | PDF
    The primary objective of this study was to evaluate rubber additive asphalt and its aggregate mixtures in the laboratory with respect to their physical characteristics.Results obtained on the physical properties of the rubberized asphalt binder were compared to those of the original, untreated asphalt. The data indicate that an acceptable binder ca ...
  • Erosion evaluation study final report
    Erosion evaluation study : final report.
    Law, Sheldon M. ;
    Vaccaro, Samuel J.
    1974-06-01 | PDF
    This study concerned with attempting to develop a laboratory procedure by which products can be evaluated, as quickly as possible after they appear on the market, in order to screen them so that the best ones can be further tested in the field.Primarily there were two phases to the study, a field phase where the products available were installed on ...
  • Attitudes Opinions and Experiences of Residents Displaced by Highways Under the 1970 Relocation Assistance Program
    Attitudes, Opinions, and Experiences of Residents Displaced by Highways Under the 1970 Relocation Assistance Program
    Buffington, Jesse L. ;
    Meuth, Hugo G.
    1974-06-01 | PDF
    This study analyzed the experiences of residents relocated from their homes as a result of highway location in several areas in Texas. Interviews were conducted with 165 households (58 percent homeowners and 42 percent renters) from the 1,130 households relocated in the State between January 1971 and January 1973 under the pro visions of the Unifor ...
  • Paving Asphalts Chemical Composition Oxidative Weathering and AsphaltAggregate Interactions Part II
    Paving Asphalts: Chemical Composition, Oxidative Weathering, and Asphalt-Aggregate Interactions, Part II
    Petersen, J. Claine ;
    Dorrence, S. M.
    1974-06-01 | PDF
    This report describes an interrelated study of the oxidation products formed in asphalt during the processing of road mixes and aging in the road and the interactions of asphalt and its oxidation products with aggregate to form the asphalt-aggregate adhesive bond. A method for the qualitative and quantitative determination of ketones, carboxylic ac ...
  • Characteristics of medically disqualified airman applicants during calendar year 1971
    Characteristics of medically disqualified airman applicants during calendar year 1971.
    Booze, Charles F.
    1974-05-01 | PDF
    The study quantifies some medical and general descriptive characteristics of airmen medically disqualified during calendar year 1971. Such information has been of continual interest to the Office of Aviation Medicine and the aviation community for purposes ranging from program monitoring to disability risk determination. Specifically, the study pre ...
  • Amplitudefrequency differences in a supine resting singlelead electrocardiogram of normal versus coronary heart diseased males
    Amplitude/frequency differences in a supine resting single-lead electrocardiogram of normal versus coronary heart diseased males.
    Lategola, Michael T. ;
    Layne, Peter J.
    1974-05-01 | PDF
    A resting 'normal' ECG can coexist with known angina pectoris, positive angiocardiography and previous myocardial infarction. In contemporary exercise ECG tests, a false positive/false negative total error of 10% is not unusual. Research aimed at improved screening detection of coronary heart disease (CHD) evaluated amplitude/frequency analysis of ...
  • Highway noise study final report
    Highway noise study : final report.
    Babin, Dennis W.
    1974-05-01 | PDF
    Three noise level measurement systems have been investigated and made operational. They are:1. Graphic Level Recording Method2. Periodic Sampling Method3. Environmental Noise Classifier MethodThe relative accuracy of the three systems were compared by simultaneous field measurements of traffic noise. Other factors such as equipment portability, dat ...
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