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Showing 35281 - 35300 of 36747 results
  • Improving the Traffic Operations and Safety of Full Cloverleaf Interchanges Final Report
    Improving the Traffic Operations and Safety of Full Cloverleaf Interchanges: Final Report
    Foody, Thomas J. ;
    Wray, Jerry H.
    1975-01-01 | PDF
    Development of criteria for altering existing full cloverleaf interchanges to improve the traffic operations and safety of this particular configuration. Only the standard cloverleaf configuration with a loop ramp and an outer connection in each quadrant was considered in this study. The data based form the Interstate System Accident Research-Study ...
  • 1973 National Truck Characteristic Report 1975
    1973 National Truck Characteristic Report (1975)
    United States. Federal Highway Administration
    1975-01-01 | PDF
    No Description
  • A realistic view of the people in air traffic control
    A realistic view of the people in air traffic control.
    Smith, Roger C.
    1974-12-01 | PDF
    An overview of research findings on air traffic controllers is presented. Results of personality, aptitude, motivation, interest, and attitude studies are considered in terms of the general pattern of characteristics found to be associated with success in the air traffic profession. The implications of these findings for managerial programs is disc ...
  • The use and effects of studded tires in Oregon
    The use and effects of studded tires in Oregon.
    Oregon State Highway Division. Research Section
    1974-12-01 | PDF
    During the past 11 years the use of studded tires has increased from a novelty to anestimated average of 20 percent for the Northern States in which snow and ice is expected. An alarming amount of surface wear in the wheel paths of the highway pavements has accompanied the increase in studded tire use. In Oregon, the use of studded tires, first aut ...
  • Comparision of Opa Locka Tower with other ATC facilites by means of a biochemical stress index
    Comparision of Opa Locka Tower with other ATC facilites by means of a biochemical stress index.
    Melton, C.E. ;
    McKenzie, J.M.
    1974-12-01 | PDF
    Physiological and biochemical measurements of stress in 14 Opa Locka Tower (OPF) controllers indicated that the principal stressor at that facility was the heavy volume of air traffic. Controllers responded to this stressor with a large increase in urinary output of catecholamines. A stress index, Cs, shows that OPF ranks second in stressfulness in ...
  • Automated Design of Continuous Bridges with Precast Prestressed Concrete Beams Volume III Shear and Moment Envelope Program Users Instructions
    Automated Design of Continuous Bridges with Precast Prestressed Concrete Beams, Volume III: Shear and Moment Envelope Program User’s Instructions
    Jones, Harry L. ;
    Harris, David W.
    1974-12-01 | PDF
    A computer program to compute shear and moment envelopes for continuous beams has been written. The program, which was originally written as a subroutine for a continuous beam design program, handles a number of different live and dead loads. Included among these is an axle train (vehicle with up to 15 arbitrarily spaced wheels) which can be used t ...
  • Comparison of Thermally Coated and Uninsulated Rail Tank Cars Filled With LPG Subjected to a Fire Environment
    Comparison of Thermally Coated and Uninsulated Rail Tank Cars Filled With LPG Subjected to a Fire Environment
    Townsend, William ;
    Anderson, Charles
    1974-12-01 | PDF
    Two fire tests were conducted on 128 kiloliter, high pressure rail tank cars filled with liquefied petroleum gas. Both tank cars were exposed to an intense hydrocarbon fire after being outfitted with appropriate instrumentation. The instrumentation was monitored and its output recorded throughout the fire tests. To test the feasibility of insulatin ...
  • Hydraulic Characteristics Of Two BicycleSafe Grate Inlet Designs
    Hydraulic Characteristics Of Two Bicycle-Safe Grate Inlet Designs
    Woo, DC ;
    Jones, JS
    1974-11-01 | PDF
    No Description
  • A Study of Detector Reliability for a Safety Warning System on the Gulf Freeway
    A Study of Detector Reliability for a Safety Warning System on the Gulf Freeway
    Dudek, Conrad L. ;
    Dutt, Amitabh
    1974-11-01 | PDF
    An experimental warning system has been installed on the Gulf Freeway in Houston as a means of alerting drivers approaching crest type vertical curves of stoppages downstream of the crest. Successful automatic operation of the warning system is dependent upon the reliability of the system components. Earlier studies showed that the developed contro ...
  • Polymer concrete overlay test program interim report
    Polymer concrete overlay test program : interim report.
    Jenkins, J. C. ;
    Beecroft, Gordon
    1974-11-01 | PDF
    This report describes work done on various combinations of monomers and polymer concrete mixes and identifies the mixes showing the greatest potential for use in bridge deck overlays . Presented are test results showing physical properties of various polymer concrete mixes, such as compressive strength, split tensile strength, modulus of elasticity ...
  • Consequences of Freeway Displacement to Urban Residents in Low Valued Housing
    Consequences of Freeway Displacement to Urban Residents in Low Valued Housing
    Adkins, William G. ;
    Burke, Dock
    1974-11-01 | PDF
    This report is considered to be a substantive progress report. The contents consist of assorted notes on decision problems and background; a check list and rating system for social, economic, and environmental factors; and an abbreviated list of selected references that should be useful to highway planners and decision makers.
  • Multiple task performance as a predictor of the potential of air traffic controller trainees a followup study
    Multiple task performance as a predictor of the potential of air traffic controller trainees : a followup study.
    Chiles, W. Dean ;
    West, Georgetta
    1974-11-01 | PDF
    Two hundred and twenty-nine air traffic controller trainees were tested on the CAMI Multiple Task Performance Battery. The battery provides objective measures of monitoring, arithmetical skills, visual discrimination, and group problem solving. The criterion of trainee potential was based on ratings from FAA Academy instructors in courses being att ...
  • Hybrid Computer Vehicle Handling Program 1974
    Hybrid Computer Vehicle Handling Program [1974]
    Bohn, P. F. ;
    Prowznik, J.
    1974-11-01 | PDF
    A hybrid computer simulation for vehicle handling studies has been implemented, checked out, and validated. The simulation has been programmed to study both solid rear axle and independent rear suspension vehicles. Model validation was accomplished using parametric data representative of four 1971 vehicles: Volkswagen Super Beetle, Chevrolet Brookw ...
  • Evaluation of Residents Attitudes and Expectations of a Planned Freeway
    Evaluation of Residents’ Attitudes and Expectations of a Planned Freeway
    Burke, Dock ;
    Guseman, Patricia Knight
    1974-11-01 | PDF
    This report presents the results of a structured survey in an area of Houston, Texas, that has been designated as a freeway corridor. The survey focuses on selected characteristics, attitudes and expectations of area residents with the primary objectives of (1) delineating key variables which predict resident's opinions of freeway construction, and ...
  • Social Economic and Environmental Factors in Highway Decision Making
    Social, Economic, and Environmental Factors in Highway Decision Making
    Adkins, William G. ;
    Burke, Dock
    1974-11-01 | PDF
    This report is considered to be a substantive progress report. The contents consist of assorted notes on decision problems and background; a check list and rating system for social, economic, and environmental factors; and an abbreviated list of selected references that should be useful to highway planners and decision makers.
  • Automated Design of Continuous Bridges with Precast Prestressed Concrete Beams Volume II Program Documentation
    Automated Design of Continuous Bridges with Precast Prestressed Concrete Beams, Volume II: Program Documentation
    Jones, Harry L. ;
    Ingram, Leonard L.
    1974-11-01 | PDF
    A Computer program has been developed in this study to perform the calculations for the design of continuous prestressed concrete bridge girders. The continuous girder is constructed from simple span precast concrete I-shaped beams made continuous by supplementary reinforcing in the deck and the ends of the precast beams. Specifications for the des ...
  • US Department of Transportation Seventh Annual Awards
    U.S. Department of Transportation Seventh Annual Awards
    United States. Department of Transportation
    1974-10-15 | U.S. Department of Transportation Annual Awards Ceremony | PDF
    We are here today to honor people in the Department of Transportation who last year stood out as "doers" - men and women who demand the most of themselves and who are determined to accomplish all that needs to be done. These people serve their government and the American people well. We all appreciate their talent and dedication. We prize their uni ...
  • A Sample Comparison of the Geomorphic Character of Two River Basins as Related to Susceptibility to Bridge Failure
    A Sample Comparison of the Geomorphic Character of Two River Basins as Related to Susceptibility to Bridge Failure
    Chang, F. M.
    1974-10-09 | PDF
    From the well-known hypothesis that is expected that a degree of geologically based similarity would exist in the surface properties of those systems showing a similarity of surface geometry, it is reasonable to assume that drainage basins with the same degree of stability (or instability) possess a certain similarity in geomorphology and channel n ...
  • TirePavement Friction as a Function of Vehicle Maneuvers
    Tire-Pavement Friction as a Function of Vehicle Maneuvers
    Hayes, Gordon G.
    1974-10-01 | PDF
    Limit maneuvers were performed on different wet pavements with disparate passenger vehicles, and the vehicle available acceleration were compared with pavement friction indicators. Reasonably conservative estimates were made of vehicle cornering and/or stopping capability as a function of skid number measured at 40 mph. These estimates can be used ...
  • Development of Urban Traffic Management and Control Systems
    Development of Urban Traffic Management and Control Systems
    McCasland, William R.
    1974-10-01 | PDF
    Studies of urban traffic operations were conducted on the freeways of Houston as part of a research program to develop traffic surveillance, motorist communications and services, and traffic control systems for the improvement of the level of service of existing urban street and highway facilities. The research study concentrates on facilities, equ ...
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