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Showing 35561 - 35580 of 36747 results
  • Diagrammatic Guide Signs for Use on Controlled Access Highways Vol III Traffic Engineering Evaluation of Diagrammatic Guide Signs Appendixes A B and C to Part 2
    Diagrammatic Guide Signs for Use on Controlled Access Highways. Vol III. Traffic Engineering Evaluation of Diagrammatic Guide Signs: Appendixes A, B, and C to Part 2
    Sanders, James H. ;
    Ganslaw, M. J.
    1972-12-01 | PDF
    Research findings obtained under the project indicate that drivers require more time to read and interpret information on diagrammatic signs in comparison with conventional signs. Moreover, as the graphic component on the sign becomes more complex, driver information interpretation time increases. Accordingly, in those cases where diagrammatic sign ...
  • Diagrammatic Guide Signs for Use on Controlled Access Highways Vol II Laboratory Instrumented Vehicle and State Traffic Studies of Diagrammatic Guide Signs
    Diagrammatic Guide Signs for Use on Controlled Access Highways: Vol. II. Laboratory Instrumented Vehicle and State Traffic Studies of Diagrammatic Guide Signs
    Mast, Truman M. ;
    Chernisky, John B.
    1972-12-01 | PDF
    Research findings obtained under the project indicate that drivers require more time to read and interpret information on diagrammatic signs in comparison with conventional signs. Moreover, as the graphic component on the sign becomes more complex, driver information interpretation time increases. Accordingly, in those cases where diagrammatic sign ...
  • Air Travel Consumer Report: December 1972 [supporting dataset]
    United States. Department of Transportation. Office of Aviation Consumer Protection
    1972-12-01 | Air Travel Consumer Report Series | ZIP
    The Air Travel Consumer Report is a monthly product of the Department of Transportation's Office of Aviation Consumer Protection. The report is designed to assist consumers with information on the quality of services provided by the airlines.The .xlsx and .xls file types are Microsoft Excel files, which can be opened with Excel, and other free avai ...
    Dataset Supporting Files
  • Optimum System for Traffic EnforcementDriver Control
    Optimum System for Traffic Enforcement-Driver Control
    California Traffic Safety Program
    1972-12-01 | PDF
    Purpose of this Supplement 1. Provide background information regarding the study. 2. Outline the management structure established to provide guidance and direction to the study group.3. Identify areas of concern to management with the product submitted by the consultant firm and explain actions taken to resolve the issues. 4. Present, in matrix for ...
  • Final report of evaluation of masonry coatings phase II
    Final report of evaluation of masonry coatings : phase II.
    LeBlanc, E. J.
    1972-11-01 | PDF
    This research project was undertaken to evaluate several coating systems for concrete masonry to replace the presently used Class 2 rubbed finish. This is the report of Phase II, the field evaluation, of that project.In early October 1970, application of the five coating systems to an elevated structure in the Baton Rouge area was began. This proje ...
  • Attritionretention rates of air traffic control trainees recruited during 19601963 and 19681970
    Attrition-retention rates of air traffic control trainees recruited during 1960-1963 and 1968-1970.
    Cobb, Bart B. ;
    Mathews, John J.
    1972-11-01 | PDF
    The study involved a total of 6,367 subjects in three ATCS options. Of these, 2,000 entered FAA Academy training during 1960 to 1963, before an ATC-Aptitude Test Battery became operational in the screening of most applicants. The remaining 4,367 subjects, the majority of whom were selected from among aptitude-screened applicants, entered the Academ ...
  • Auditory Effects of Noise on AirCrew Personnel
    Auditory Effects of Noise on Air-Crew Personnel
    Tobias, Jerry V.
    1972-11-01 | PDF
    Hearing-threshold tests were made on flight personnel of several sorts, including aerial-application pilots, flight instructors, private pilots, stewardesses, and FAA flight inspectors. Excluding those people whose flight experience is of short duration, each group shows some measurable degree of threshold shift, although this shift is frequently n ...
  • FifteenOhOne to SixteenThirty Technical and Managerial Lessons from One Experience in Introducing New Technology to Improve Urban Mass Transportation
    Fifteen-Oh-One to Sixteen-Thirty: Technical and Managerial Lessons from One Experience in Introducing New Technology to Improve Urban Mass Transportation
    Price, Charlton R. ;
    Scheele, D. Sam
    1972-11-01 | PDF
    Acquiring 130 new, double-desk, self-propelled, electrically operated commuter rail cars numbered 1501 to 1630 is part of a five-year effort to improve service on the suburban lines in the South Chicago area operated by the Illinois Central Railroad. The introduction of the cars and other improvements represent one instance of attempts to upgrade s ...
  • Project FARE Task II Report Urban Mass Transportation Industry Survey of Reporting Capability Interim Task II Report for JulyNovember 1972 Period
    Project FARE Task II Report: Urban Mass Transportation Industry Survey of Reporting Capability: Interim Task II Report for July-November 1972 Period
    Harvey, David L. ;
    Nagel, John W.
    1972-11-01 | PDF
    Report contains a description of the work done to evaluate the capability of the urban mass transit industry to report financial and operating data through a uniform reporting system. Techniques used in the evaluation included a questionnaire survey of 191 transit systems and field studies of 43 transit systems and related organizations. The questi ...
  • An Investigation of Concrete Quality Evaluation Methods
    An Investigation of Concrete Quality Evaluation Methods
    Poehl, Rudell ;
    Swift, Gilbert
    1972-11-01 | PDF
    Four techniques applicable to a field survey for detecting areas of poor-quality concrete in concrete bridge decks were investigated and compared. Comparisons were also made between the measurements obtained using these four techniques and laboratory determinations of the compressive strength of cores taken from each bridge deck. It was concluded t ...
  • US Department of Transportation Fourth Annual Awards
    U.S. Department of Transportation Fourth Annual Awards
    United States. Department of Transportation
    1972-10-13 | U.S. Department of Transportation Annual Awards Ceremony | PDF
    Today, we recognize several men and women of the Department of Transportation who have through their creative ideas, solutions to problems and forthright personal courage transcended the established order of things. Their sensitivity, perception, skills, judgment, stamina and resolute bravery have all contributed to an improved social ecology- an e ...
  • US Department of Transportation Fifth Annual Awards
    U.S. Department of Transportation Fifth Annual Awards
    United States. Department of Transportation
    1972-10-13 | U.S. Department of Transportation Annual Awards Ceremony | PDF
    Our purpose today is to give due recognition to those individuals in the Department of Transportation who have distinguished themselves through their outstanding performance, leadership, innovative ideas and unselfish personal courage. These exceptional few, through their tremendous dedication, their constant quest for excellence, and their sincere ...
  • Evaluation of catch basin grates final report
    Evaluation of catch basin grates : final report.
    Law, Sheldon M. ;
    Vaccaro, Samuel J.
    1972-10-01 | PDF
    The Louisiana Department of Highways has adopted new designs for the Standard Plans for the RCB 22X catch basin to replace the old standard cast iron grate with either a welded bar steel grate or an alternate riveted steel reticuline grate. This revision was brought about by a request from the manufacturers for a new design of the cast iron grate b ...
  • FPS11 Flexible Pavement System Computer Program Documentation
    FPS-11 Flexible Pavement System Computer Program Documentation
    Orellana, Hugo E.
    1972-10-01 | PDF
    This report gives the documentation of the computer program FPS-11 used for implementation of the flexible pavement design system. This documentation is also in machine readable form to make possible a continuing documentation system for updates and improvements in the Flexible Pavement System (FPS) series of computer programs. Included in this rep ...
  • Light Rail Transit Systems A Definition and Evaluation
    Light Rail Transit Systems - A Definition and Evaluation
    Vuchic, Vukan R.
    1972-10-01 | PDF
    Rail transit represents a family of modes ranging from light rail to regional rapid transit systems and it can be utilized in a number of different cities and types of applications. Many European cities of medium size employ very successfully light rail mode for gradual upgrading of transit service into partially or fully separated high speed, reli ...
  • Variables Associated with Automobile Tire Hydroplaning
    Variables Associated with Automobile Tire Hydroplaning
    Stocker, A. J. ;
    Lewis, J. M.
    1972-09-01 | PDF
    A study of the wet weather characteristics of four different pavements and eight different tires is presented. The pavements studied were a portland cement concrete, a bituminous surface treatment, a hot mix asphalt and a jennite surface. The tires studied were several bias ply tires with different tread depths, a wide tire and a test standard tire ...
  • Demonstration of visibility measuring device to detect highway fog conditions
    Demonstration of visibility measuring device to detect highway fog conditions.
    Lane, Francis D. ;
    Hannaman, Linda
    1972-09-01 | PDF
    No Description
  • GPSS360 computer models to simulate aircraft passenger emergency evacuations
    GPSS/360 computer models to simulate aircraft passenger emergency evacuations.
    Fold, Earl D. ;
    Garner, J.D.
    1972-09-01 | PDF
    Live tests of emergency evacuation of transport aircraft are becoming increasingly expensive as the planes grow to a size seating hundreds of passengers. Repeated tests, to cope with random variations, increase these costs, as well as risks of injuries to participants. A method of simulating such repeated tests, by use of computer models based on s ...
  • Binaural processing of speech in light aircraft
    Binaural processing of speech in light aircraft.
    Tobias, Jerry V.
    1972-09-01 | PDF
    Laboratory studies have shown that the human binaural auditory system can extract signals from noise more effectively when the signals (or the noise) are presented in one of several interaurally disparate configurations. Questions arise as to whether these laboratory studies in anechoic or semi-anechoic spaces can be generalized to more reverberant ...
  • Field Measurements of Lateral Earth Pressures on a Cantilever Retaining Wall
    Field Measurements of Lateral Earth Pressures on a Cantilever Retaining Wall
    Coyle, Harry M. ;
    Bartoskewitz, Richard E.
    1972-09-01 | PDF
    Terra Tee pneumatic and Geonor vibrating wire earth pressure cells are used to measure the lateral earth pressures acting on a typical cantilever retaining wall. Accurate measurements of the lateral movements of the wall are made during and after backfilling. Data are presented for both pressure measurements and wall movements covering a period of ...
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