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Showing 34941 - 34960 of 36747 results
  • Analysis of Diamond Interchange Operation and Development of a Frontage Road Level of Service Evaluation Program PASSER III Final Report
    Analysis of Diamond Interchange Operation and Development of a Frontage Road Level of Service Evaluation Program – PASSER III [Final Report]
    Messer, Carroll J. ;
    Fambro, Daniel B.
    1976-08-01 | PDF
    This report presents the development and findings of a research project conducted by the Texas Transportation Institute entitled. "Development of a Frontage Road Level of Service Evaluation Program -- PASSER III". The research was sponsored by the Texas Department of Highways and Public Transportation in cooperation with the U.S. Department of Tran ...
  • Alternate Designs for CCTV Traffic Surveillance Systems
    Alternate Designs for CCTV Traffic Surveillance Systems
    Andersen, Donald A. ;
    McCasland, William R.
    1976-08-01 | PDF
    This report is one of a series that presents the findings of a research project entitled "Development and Evaluation of On-Freeway Traffic Control Systems and Surveillance Techniques" sponsored by the State Department of Highways and Public Transportation in Texas in cooperation with the U.S. Department of Transportation, Federal Highway Administra ...
  • Aviation medicine FAA
    Aviation medicine : FAA
    Reighard, H.L.
    1976-08-01 | PDF
    Review and status of civil aviation medicine.
  • A New Sensing System for Preexcavation Subsurface Investigation for Tunnels in Rock Masses Volume I Feasibility Study and System Design
    A New Sensing System for Pre-excavation Subsurface Investigation for Tunnels in Rock Masses. Volume I. Feasibility Study and System Design
    Rubin, L. A. ;
    Fowler, J. C.
    1976-08-01 | PDF
    This report includes a feasibility study and system design for an initial prototype of a sensing system for pre-excavation subsurface investigation for tunnels in rock. Tunnels in rock are very expensive, and costs often rise far above estimates when unforeseen problems are encountered during excavation. New techniques in rapid excavation technolog ...
  • Installation of Fog Guidance Lights on Afton Mountain
    Installation of Fog Guidance Lights on Afton Mountain
    Creech, Marion F
    1976-08-01 | PDF
    The Afton Mountain fog guidance system was installed between May 15, 1974, and March 15, 1976, at a total cost of $1,997,748. It covers a distance of 5.819 miles, and consists of 841 pavement inset lights spaced at 200 ft. intervals on tangent sections and at 100 ft. on curved sections on the main line and a short distance down the exit ramps at th ...
  • Advance traffic control warning systems for maintenance operations final report
    Advance traffic control warning systems for maintenance operations : final report.
    Shan, S. C. ;
    Ray, G. L.
    1976-07-01 | PDF
    The report discusses the effect of certain variables defined by sign size, height of installation and legend on the driver responses as measured by speed, conflict and queuing parameters. Effects of electronically actuated, directional flashing signs were also evaluated in terms of the above defined responses. The experiment was conducted at four l ...
  • Development and evaluation of masterbody forms for 3 and 6yearoldchild dummies
    Development and evaluation of masterbody forms for 3- and 6-year-old-child dummies.
    Young, Joseph W. ;
    Reynolds, Herbert M.
    1976-07-01 | PDF
    This study defines and evaluates the size, shape, and mass distribution characteristics of masterbody forms representative of 3-year-old and 6-year-old U.S. children. Based on the author's collective judgment of available data, 98 anthropometric dimensions were selected and used to develop full-scale clay masterbody forms for reproduction in castin ...
  • Cement stackdust treatment for materials in place
    Cement stackdust treatment for materials in place.
    Dudley, Warren N.
    1976-07-01 | PDF
    This paper is a presentation of the experiences ofDistrict 20 of the State Department of Highways andPublic Transportation in experimenting with cementstackdust as a stabilizing agent for base and subbaseroadway materials. It includes laboratory testresults, roadway use techniques, a proposed SpecialSpecification for use of the material and picture ...
  • Impact properties of steels taken from four failed tank cars
    Impact properties of steels taken from four failed tank cars.
    Interrante, C.G.
    1976-06-01 | PDF
    An overview of the results and metallurgical analyses o f the findings of impact tests conducted at the National Bureau of Standards on samples of tank-car matertals subhi'tted by the Federal Railroad Adminl'stration i s presented. The submitted samples were taken from tank cars which had been involved in service accidents durtng the period January ...
  • Annual Report of the Maritime Administration 1975 MARAD 1975
    Annual Report of the Maritime Administration 1975 [MARAD 1975]
    United States. Maritime Administration
    1976-06-01 | Annual Reports of the Maritime Administration | PDF
    Annual report of the Maritime Administration, U.S. Department of Commerce. The report covers the Agency's activities during fiscal year 1975 to promote and strengthen the-American merchant marine.
  • Visual evaluation of smokeprotective devices
    Visual evaluation of smoke-protective devices.
    Vaughan, John A. ;
    Welsh, Kenneth W.
    1976-05-01 | PDF
    This study was designed to determine the visual characteristics of smoke-protective devices for flight deck crews. Visual measurements were made on five male subjects, who ranged in age from 35 to 54, while they were wearing each of the 26 devices tested. These measurements included1.visual field,2.visual acuity,3.stereoscopic depth perception,4.co ...
  • Design and Evaluation of Freeway Surveillance and Traffic Control Systems
    Design and Evaluation of Freeway Surveillance and Traffic Control Systems
    McCasland, William R.
    1976-05-01 | PDF
    Studies of urban traffic operations were conducted on the freeways of Texas to determine the design and effectiveness of traffic control and surveillance systems; to relieve peak period congestion; to lessen the impact of disabled vehicles on the operation and safety of the freeways; and reduce the incidents of overhead structure damage by over-hei ...
  • Dynamic Properties of Subgrade Soils Including Environmental Effects
    Dynamic Properties of Subgrade Soils, Including Environmental Effects
    Edris Jr, Earl V. ;
    Lytton, Robert L.
    1976-05-01 | PDF
    Three fine-grained soils, varying in clay content between 20% and 70%, were tested in a unique repet1ttve loading apparatus to determine how soil suction! temperature, and stress state affect the resilient modulus and residual strains expected under highway and railroad loadings. ln developing equations to predict these dynamic properties, three va ...
  • An investigation of timesharing ability as a factor in complex performance
    An investigation of time-sharing ability as a factor in complex performance.
    Jennings, Alan E. ;
    Chiles, W. Dean
    1976-05-01
    Thirty-nine men were tested on a total of six tasks; performance was measured on each task presented individually and on two complex tasks made up of three-task subsets. The tasks measured monitoring, arithmetic, pattern-discrimination, tracking, and problem-solving performance.Two separate test sessions were conducted for each of the individual ta ...
  • Energy Absorbing Bumpers for Transit Buses Transbus Program
    Energy Absorbing Bumpers for Transit Buses: Transbus Program
    Booz, Allen Applied Research Inc.
    1976-05-01 | PDF
    This report describes the results of a program to test and evaluate the potential benefits of energy absorbing bumpers for transit buses. The objective of the program is to determine, through controlled tests, the capabilities/limitations of six new design energy absorbing bumper systems. Principal emphasis is placed upon the bumper system performa ...
  • Diagrammatic sign study final report
    Diagrammatic sign study : final report.
    Babin, Dennis W.
    1976-04-01 | PDF
    This research was undertaken to evaluate the effectiveness of a diagrammatic sign as compared to a conventional sign at a particular location. The measure selected for determining sign effectiveness was erratic traffic maneuvers. It was assumed that any significant differences in the proportion of erratic maneuvers "before" and "after" the diagramm ...
  • Aviation medicine translations annotated bibliography of recently translated material IX
    Aviation medicine translations : annotated bibliography of recently translated material, IX.
    Constant, Gregory N. ;
    Grimm, E. Jean
    1976-04-01 | PDF
    An annotated bibliography of translations of foreign-language articles is presented. The 20 listed entries are concerned with studies of cardiology; aviation vestibular testing and vestibular factors in accidents; use of bones of identification of remains; psychological characteristics associated with pilots, stewardesses, and nuclear workers; stre ...
  • WeighinMotion systems evaluation final report
    Weigh-in-Motion systems evaluation : final report.
    Burt, James O. ;
    Babin, Dennis W.
    1976-04-01 | PDF
    This relatively short-term project was initiated in order to perfect installation, operation, and maintenance practices necessary for continued accurate and reliable operation of a computerized Weigh-in-Motion system which will be used to gather truck weight data in a long-term study to improve flexible pavement design.A complete Weigh-in-Motion Sy ...
  • Lateral Support Systems And Underpinning Volume II Design Fundamentals
    Lateral Support Systems And Underpinning. Volume II. Design Fundamentals
    Goldberg, DT ;
    Jaworski, WE
    1976-04-01 | PDF
    This report provides current information and design guidelines on cut-and-cover tunneling for practicing engineers. The main emphasis is on the geotechnical aspects of engineering. Included in this volume is a state-of-the-art summary of displacements and lateral pressure. Other topics are basic concepts of soil mechanics, ground water in open cut, ...
  • Lateral Support Systems And Underpinning Volume I Design And Construction
    Lateral Support Systems And Underpinning. Volume I: Design And Construction
    Goldberg, DT ;
    Jaworski, WE
    1976-04-01 | PDF
    This volume is a convenient reference on the design and construction of lateral support systems and underpining which are often required in conjunction with cut-and-cover or soft ground tunneling. The design recommendations and construction methods described herein are a summary of the more detailed information presented in the companion volumes of ...
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