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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 31181 - 31200 of 35440 results
  • The Virginia Department of Transportations statistical specification for hydraulic cement concrete
    The Virginia Department of Transportation's statistical specification for hydraulic cement concrete.
    Halstead, Woodrow J
    1990-01-01 | PDF
    This report reviews some of the principles relating to the application of statistical concepts to be used in the quality assurance and acceptance testing of hydraulic cement concrete. The problems encountered in developing a workable system without a substantial' increase in the testing and inspection personnel for the Virginia Department of Transp ...
  • Potential for use of discarded tires in highway construction and maintenance
    Potential for use of discarded tires in highway construction and maintenance.
    Halstead, Woodrow J ;
    Hughes, Charles S
    1990-01-01 | PDF
    No Description
  • A brief stateoftheart review of pneumatically applied concrete or mortar shotcrete
    A brief state-of-the-art review of pneumatically applied concrete or mortar (shotcrete).
    Hilton, Marvin H
    1990-01-01 | PDF
    No Description
  • A demonstration of expert systems applications in transportation engineering volume III evaluation of the prototype expert system TRANZ
    A demonstration of expert systems applications in transportation engineering : volume III, evaluation of the prototype expert system TRANZ.
    Demetsky, Michael J.
    1990-01-01 | PDF
    The validation and evaluation of an expert system for traffic control in highway work zones (TRANZ) is described. The stages in the evaluation process consisted of the following: revisit the experts, selectively distribute copies of TRANZ with documentation and an evaluation form, perform research on identifying related problems that affect the pro ...
  • Evaluation of performance and costeffectiveness of thin pavement surface treatments interim report 2
    Evaluation of performance and cost-effectiveness of thin pavement surface treatments : interim report #2.
    Scholl, Lewis G. ;
    Negrete, R. C.
    1990-01-01 | PDF
    This is the second report to result from the subject study. It represents the first major effort to evaluate the available data on "thin pavement surface treatments" in Oregon and to define "cost effectiveness" for this purpose. The 87 projects studied here were constructed in 1984, 1985, and 1986. This report includes pavement condition data colle ...
  • Fate of ethylene glycol in the environment final report
    Fate of ethylene glycol in the environment : final report.
    Abdelghani, A. A. ;
    Anderson, A. C.
    1990-01-01 | PDF
    The Louisiana Department of Transportation and Development uses ethylene glycol (EG) as a deicing agent on bridges. This study was undertaken to assess the impact of EG on workers and the environment after spraying. The objectives of the project were to:(1) determine the level of exposure of workers spraying EG on bridges;(2) monitor the level of E ...
  • Swalley canal ice detection system final report
    Swalley canal ice detection system : final report.
    Rusnak, James S. ;
    Scholl, Lewis G.
    1990-01-01 | PDF
    This report evaluates the reliability of information provided by a "SCAN 16" surface condition analyzer. SCAN systems are designed to inform highway maintenance personnel when frost, ice and snow are present on a roadway surface or bridge deck. The system evaluated here was installed on a bridge deck in a part of Oregon where frost, snow, and ice a ...
  • Effects of Monitoring under High and Low Taskload on Detection of Flashing and Colored Radar Targets
    Effects of Monitoring under High and Low Taskload on Detection of Flashing and Colored Radar Targets
    Thackray, Richard I. ;
    Touchstone, R. Mark
    1990-01-01 | PDF
    While midair collisions between aircraft are extremely rare occurrences, "near midair" incidents are more common. The present study sought to evaluate the gains in conspicuity that might be realized if flashing or color were added as redundant cues to indicate the presence of unexpected, nontracked aircraft entering controlled airspace and to exami ...
  • Management Assessment Implications for Development and Training
    Management Assessment: Implications for Development and Training
    Myers, Jennifer G.
    1990-01-01 | PDF
    Training needs of first level, middle level, and upper level managers within the Federal Aviation Administration (FAA) were assessed through the analysis of two current agency surveys: the bienniel Job Satisfaction Survey and the new, annual Survey-Feedback-Action Program. Areas of analysis included the identification of areas of strong and weak pe ...
  • North Dakota Grain and Oilseed Transportation Statistics 198889
    North Dakota Grain and Oilseed Transportation Statistics, 1988–89
    Olsen, Barry M ;
    Zink, Daniel L
    1989-12-01 | PDF
    This report represents a continuation of analysis concerned with the patterns and methods of distributing grains and oilseeds from North Dakota. This series began with the analysis of 1956-57 data and was published in Agricultural Economics Report 14, Department of Agricultural Economics, North Dakota State University. Subsequent years' data were a ...
  • Prediction of Flood Quantiles at Ungaged Watersheds in Louisiana Technical Summary
    Prediction of Flood Quantiles at Ungaged Watersheds in Louisiana: Technical Summary
    Naghavi, Babak ;
    Cruise, J.F.
    1989-12-01 | PDF
    Four popular regional flood frequency methods were compared using Louisiana stream flow series. The state was divided into four homogeneous regions and all undistorted, long-term stream gages were used in the analysis. The GEV, TCEV, regional LP3 and USGS regression methods were applied to this data base and compared in terms of descriptive capabil ...
  • Paving fabrics for reducing reflective cracking
    Paving fabrics for reducing reflective cracking
    Rahman, Mushtaqur ;
    Scofield, Larry
    1989-12-01 | PDF
    This report documents the installation of three commercially available paving fabrics for the reduction of reflective cracking in asphalt overlays. The fabrics installed were Paveprep, Glassgrid, and Tapecoat. The test section is in Willcox, Arizona, on State Route 186. The Willcox rehabilitation project, RS-274-(8)P, involved milling and replacing ...
  • A pavement management research program for Oregon highways final report
    A pavement management research program for Oregon highways : final report.
    Parker, Dick
    1989-12-01 | PDF
    An extensive program was developed to measure pavement deflection skid resistance, and rideability throughout Oregon. The data from those "objective" measures were then evaluated for correlations with observed pavement distress and traffic factors.It is concluded that "Dynaflect" deflections and other "objective" measures of pavement performance ca ...
  • Prediction of flood quantiles at ungaged watersheds in Louisiana final report
    Prediction of flood quantiles at ungaged watersheds in Louisiana : final report.
    Naghavi, Babak ;
    Cruise, James
    1989-12-01 | PDF
    Four popular regional flood frequency methods were compared using Louisiana stream flow series. The state was divided into four homogeneous regions and all undistorted, long-term stream gages were used in the analysis. The GEV, TCEV, regional LP3 and USGS regression methods were applied to this data base and compared in terms of descriptive capabil ...
  • Determining pile bearing capacity by some means other than the engineering news formula final report
    Determining pile bearing capacity by some means other than the engineering news formula : final report.
    McManis, K. ;
    Folse, Michael D.
    1989-12-01 | PDF
    A review of the practice used in monitoring pile driving activities within the Louisiana Department of Transportation and Development (LADOTD) and elsewhere is reported. The Engineering News Record formula is currently the most commonly reported method used by departments of transportation in the evaluation of pile driving. The performance of sever ...
  • The Influence of Adjacent Seating Configurations on Egress through a Type III Emergency Exit
    The Influence of Adjacent Seating Configurations on Egress through a Type III Emergency Exit
    Rasmussen, Paul G. ;
    Chittum, Charles B.
    1989-12-01 | PDF
    When the United Kingdom Civil Aviation Authority (CAA) established a mandatory action intended to improve access to, and opening of, Type III emergency exits, the Northwest Mountain Region identified a need for a study to evaluate the proposed changes against existing minimum requirements of the Federal Aviation Regulations (FAR).The results indica ...
  • Airliner Cabin Ozone An Updated Review
    Airliner Cabin Ozone: An Updated Review
    Melton, C.E.
    1989-12-01 | PDF
    The recent literature pertaining to ozone contamination of airliner cabins is reviewed. Measurements in airliner cabins without filters showed that ozone levels were about 50 percent of atmospheric ozone. Filters were about 90 percent effective in destroying ozone.Ozone (0.12 to 0.14 ppmv) caused mild subjective respiratory irritation in exercising ...
  • The Effects of Local and Regional Railroads on Intermodal and Intramodal Competition North Dakota Rail Services Planning Study
    The Effects of Local and Regional Railroads on Intermodal and Intramodal Competition: North Dakota Rail Services Planning Study
    Tolliver, Denver D
    1989-11-01 | PDF
    The organization structure of railroads in the Upper Great Plains region is rapidly changing. Class I carriers such as the Burlington Northern are selling their branch lines to new rail operators. Line sale, on a significant scale, may affect traditional competitive relationships among railroads and between railroads and motor carriers. The purpose ...
  • Class I Carrier Light Density Costing Methodology
    Class I Carrier Light Density Costing Methodology
    Tolliver, Denver D
    1989-11-01 | PDF
    Changes in branch-line ownership, coupled with an on-going need for policy analysis and planning, make rail costing methods important to research and analysis in North Dakota. The purpose of this report is to document a methodology for light-density cost analysis which is used in Phases I and II of the North Dakota Rail Services Planning (RSP) Stud ...
  • The Impacts of Local and Regional Railroads on Rail Labor in North Dakota
    The Impacts of Local and Regional Railroads on Rail Labor in North Dakota
    Tolliver, Denver D
    1989-11-01 | PDF
    The purpose of this report is not to analyze the laws and regulations that govern railway labor, or which affect ICC exemption procedures. These are quasi-legal issues which will be settled in the courts, or remanded to the ICC for clarification. The goal of this study is more fundamental in nature: to evaluate the effects of line sales on rail lab ...
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