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Showing 35141 - 35160 of 36747 results
  • Final System Plan for Restructuring Railroads in the Northeast and Midwest Region Pursuant to the Regional Rail Reorganization Act of 1973 Volume I Parts I and II
    Final System Plan for Restructuring Railroads in the Northeast and Midwest Region Pursuant to the Regional Rail Reorganization Act of 1973: Volume I, Parts I and II
    United States Railway Association
    1975-07-26 | PDF
    Volume I of the United States Railway Association’s Final System Plan presents the core policy, operating, financial, and legal framework for restructuring the bankrupt railroads of the Northeast and Midwest into a viable regional rail system. Prepared under the Regional Rail Reorganization Act of 1973 (3R Act) and later implemented through the Rai ...
  • The Daylight Saving Time Study Volume I Final Report on the Operation and Effects of Daylight Saving Time
    The Daylight Saving Time Study Volume I – Final Report on the Operation and Effects of Daylight Saving Time
    Ebersole, Nancy ;
    Rubin, David
    1975-07-01 | PDF
    In December 1973, Congress enacted the Emergency Daylight Saving Time Energy Conservation Act of 1973 which placed the nation on Year-Round Daylight Saving Time for a two year trial period starting Jan. 6, 1974. While energy savings was the main purpose other benefits in safety and crime were also considered to be possible effects. The Act required ...
  • Automated guideway transit an assessment of PRT and other new systems including supporting panel reports prepared at the request of the Senate Committee on Appropriations Transportation Subcommittee
    Automated guideway transit : an assessment of PRT and other new systems, including supporting panel reports : prepared at the request of the Senate Committee on Appropriations, Transportation Subcommittee
    United States. Congress. Office of Technology Assessment
    1975-06-01 | PDF
    This assessment of Personal Rapid Transit and other forms of Automated GuidewayTransportation has been prepared in response to a request from Congress. Thescope of this assessment complements two other studies conducted by the Officeof Technology Assessment (OTA). The subjects of these other assessments are:1) The degree of automation which is tech ...
  • Ground vibration investigation at highway construction sites final report
    Ground vibration investigation at highway construction sites : final report.
    Walters, William C. ;
    Bokun, Steve G.
    1975-06-01 | PDF
    The purpose of this study was to measure vibration magnitudes on construction projects in terms of particle velocity rather than particle displacement or acceleration. Peak particle velocity was chosen as the best means of measurement after the U.S. Bureau of Mines made a statistical analysis of several reports on vibrations to residential structur ...
  • StateoftheArt of Motorist Aid Systems
    State-of-the-Art of Motorist Aid Systems
    Ritch, Gene P.
    1975-06-01 | PDF
    This report presents the analysis of a questionnaire survey administrated to the responsible governmental agencies which have or had motorist aid systems (MAS) and those manufacturers of recent MAS equipment. The topics covered with each agency include: 1) Indication of present MAS configuration; 2). Reasons for removal and alternatives provided; 3 ...
  • Optimal Flexible Pavement CrossSection Design Using QuantityDiscount Cost Model
    Optimal Flexible Pavement Cross-Section Design Using Quantity-Discount Cost Model
    Lu, Danny Y. ;
    Lytton, Robert L.
    1975-06-01 | PDF
    The effects of using the full pavement cross-section and a quantity-discount on the cost of the construction materials in the Texas Flexible Pavement Design System (FPS) are evaluated in this study. Including the shoulders in the pavement cross-section and the discounted materials cost does change the selection of the optimal design strategy of new ...
  • Grain Transportation Costs and Characteristics for North Dakotas Farm Trucks
    Grain Transportation Costs and Characteristics for North Dakota’s Farm Trucks
    Griffin, Gene C. ;
    Tosterud, Robert J
    1975-06-01 | PDF
    The general objective of this study is to determine the costs of moving grain from farm to local market by farm truck and what factors influence these costs. The specific objectives are: 1) To determine the average cost of moving grain from farm to local market by farm truck and 2) To evaluate the influence that the factors of box size, truck size, ...
  • Analysis and Comparative Evaluation of AIRPOL4
    Analysis and Comparative Evaluation of AIRPOL-4
    Carpenter, William A., ;
    Clemeña, Gerardo G.
    1975-06-01 | PDF
    AIRPOL-4, an air quality prediction model, has been developed by the Virginia Highway and Transportation Research Council for use in complying with the requirements contained in the Federal Aid Program Manual, Vol. 7, Ch. 7, Section 9, November 1, 1973. This report, the second in the AIRPOL series, presents definitive experimental evidence which es ...
  • Installation Details for Runway Centerline Touchdown Zone Lighting Systems
    Installation Details for Runway Centerline Touchdown Zone Lighting Systems
    United States. Department of Transportation. Federal Aviation Administration
    1975-05-06 | PDF
    Describes standards for the design and installation of runway centerline and touchdown zone lighting systems. This consolidated reprint includes Changes 1 and 2.
  • A brief history of the Staunton and James River Turnpike May 1975
    A brief history of the Staunton and James River Turnpike : May 1975.
    Young, Douglas
    1975-05-01 | PDF
    During the early nineteenth century the United States experienced a period of growth and expansion. To help meet needs occasioned by this growth, improved means of communication and transportation were established. Among these improvements were the construction of turnpikes. The period from 1800-1830 has, in fact, been termed by George Rogers Taylo ...
  • Attitudes on en route air traffic control training and work a comparison of recruits initially trained at the FAA Academy and recruits initially trained at assigned centers
    Attitudes on en route air traffic control training and work : a comparison of recruits initially trained at the FAA Academy and recruits initially trained at assigned centers.
    Mathews, John J. ;
    Cobb, Bart B.
    1975-05-01 | PDF
    In this comparison, questionnaires concerning aspects of training-related and work-related attitudes were sent to 225 ATC trainees who represented groups of attritions and retentions in two En Route training programs; viz, programs that provided basic training at the FAA Academy and programs that provided basic training at the trainees' assigned fa ...
  • Comparative Analysis of Attitudes Opinions Experiences and Characteristics of Highway Relocatees
    Comparative Analysis of Attitudes, Opinions, Experiences and Characteristics of Highway Relocatees
    Buffington, Jesse L. ;
    Schafer, Dale L.
    1975-05-01 | PDF
    This study analyzes the attitudes, opinions, experiences, and characteristics of highway relocatees displaced under the 1968 and 1970 Relocation Programs. Four classifications are used in a comparative analysis as follows: (1) type of relocatee (residential versus business or institutional), (2) type of relocation program (1968 versus 1970), (3) po ...
  • North Dakota Grain Transportation Statistics 197374
    North Dakota Grain Transportation Statistics 1973–74
    Tosterud, Robert J
    1975-05-01 | PDF
    This report represents a continuation of analyses concerned with the patterns and methods of distributing grain from North Dakota. The collection and compilation of this type of data began in 1956-57. The objective of this report, like its predecessors, is to provide the necessary data base for identifying trends in the distribution of grains from ...
  • Supportive Data and Methods for the Evaluation of AIRPOL4
    Supportive Data and Methods for the Evaluation of AIRPOL-4
    Carpenter, William A., ;
    Clemeña, Gerardo G.
    1975-05-01 | PDF
    This is the fourth in a series of reports documenting AIRPOL-4, the Virginia Department of Highways and Transportation line-source model for predicting carbon monoxide concentrations within the microscale environments of highways. The purpose of this report is to present the detailed data and methods involved in the analysis and comparative evaluat ...
  • Dynamic Vehicular Loading of the Hubbard Creek Reservoir Bridge 1975
    Dynamic Vehicular Loading of the Hubbard Creek Reservoir Bridge, 1975
    Lee, Clyde E. ;
    Machemehl, Randy
    1975-04-01 | PDF
    Since its construction in the early 1960's, the three-quarter-mile-long predominantly reinforced concrete bridge structure on U.S. Highway 180 over the Hubbard Creek Reservoir in north central Texas has developed significant permanent deformation or sag near the center of most of the 40-foot-long simply supported pan girder type spans. This undulat ...
  • Evaluation of synthetic fabrics for the reduction of reflective cracking final report
    Evaluation of synthetic fabrics for the reduction of reflective cracking : final report.
    Carey, Donald E.
    1975-04-01 | PDF
    This research was undertaken to evaluate the effectiveness of two synthetic fabrics in relieving stress and reducing or eliminating reflection cracking in the asphaltic concrete overlay of existing distressed concrete pavements.The polypropylene fabric was placed in strips over the cracks and joints of an existing concrete pavement, followed by a 3 ...
  • Highway Metrication Vol 1 Tasks 1 2 3 4 and Apercu
    Highway Metrication: Vol. 1. Tasks 1, 2, 3, 4 and Apercu
    Meacham, D. G. ;
    Bishara, A.G.
    1975-04-01 | PDF
    The purpose of the study is to identify various problems which are likely to arise during highway metrication and to prepare a detailed plan for research aimed at solving conversion problems. Investigations reveal a need for an early selection of the metric units to be used, the vital importance of early metrication of specifications and standards, ...
  • Evaluation of thermoplastic materials final report
    Evaluation of thermoplastic materials : final report.
    Lacinak, Henry W.
    1975-04-01 | PDF
    In order to find a striping material which would last longer and have greater reflectance than the presently used traffic paint, research was performed on three relatively new thermoplastic marking compounds. The manufacturers of these products claim that the thermoplastic materials have longer life expectancies and higher reflectance values than t ...
  • Antistripping additives in lieu of mineral fillers in asphaltic concrete mixtures final report
    Antistripping additives in lieu of mineral fillers in asphaltic concrete mixtures : final report.
    Shah, S. C.
    1975-04-01 | PDF
    The major objective of the study was to determine the feasibility of specifying antistripping additives in lieu of mineral fillers in asphaltic concrete mixtures using Marshall Test and visual observation of stripping characteristics as criteria.The scope of the study was confined to wearing course type sand-gravel mixtures with aggregate from two ...
  • Highway Metrication Vol 2 Appendixes
    Highway Metrication: Vol. 2. Appendixes
    Meacham, D. G. ;
    Bishara, A.G.
    1975-04-01 | PDF
    The study purpose is to identify various problems which are likely to arise during highway metrication and to prepare a detailed plan for research aimed at solving conversion problems. Investigations reveal a need for an early selection of the metric units to be used, the vital importance of early metrication of specifications and standards, and th ...
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