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Showing 34961 - 34980 of 36747 results
  • Wet Weather Accident Reduction A BenefitCost Approach
    Wet Weather Accident Reduction: A Benefit/Cost Approach
    Davis, Merritt M. ;
    McFarland, William F.
    1976-04-01 | PDF
    Thirty-six highway control sections were analyzed for the effectiveness of renewal of surface friction. After elimination of sections serving as links for incomplete interstate routes and of sections requiring upgrading, 23 sections remained. A criterion was developed to estimate a normal number of wet road accidents and hence the potential acciden ...
  • Lateral Support Systems and Underpinning Volume III Construction Methods
    Lateral Support Systems and Underpinning, Volume III: Construction Methods
    Goldberg, Donald T. ;
    Jaworski, Walter E.
    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, ...
  • Vibratory roller evaluation study final report
    Vibratory roller evaluation study : final report.
    Glascock, Lacey A.
    1976-03-01 | PDF
    The Louisiana Department of Highways has recently completed a program to evaluate the use of vibratory rollers in the compaction of asphaltic concrete pavements. In all, a total of nine different vibratory rollers was tested along with conventional static weight roller previously required by Specifications. Emphasis of the evaluation is centered up ...
  • Massed versus distributed practice in learned improvement of speech intelligibility
    Massed versus distributed practice in learned improvement of speech intelligibility.
    Tobias, Jerry V.
    1976-03-01 | PDF
    Student pilots or new air traffic controllers have two ways to learn to understand the noisy and distorted communications common to aircraft operations: they may learn as they are working on other aspects of the activity, or they may learn by devoting a continuous period of time to speech-intelligibility improvement. Work completed at this laborato ...
  • Effects of Ground Trainer Use on the Psychological and Physiological States of Students in Private Pilot Training
    Effects of Ground Trainer Use on the Psychological and Physiological States of Students in Private Pilot Training
    Smith, R.C. ;
    Melton, C.E.
    1976-03-01 | PDF
    Student pilots receiving all instruction in an aircraft and student pilots who received a portion of their flight training in a ground trainer were compared in terms of flying proficiency, psychological (anxiety) states during training, and certain physiological measures. Pilot performance appeared to be equal in both groups, as measured by objecti ...
  • A Study of OnFreeway Lane Closure in the Merge Area of Two Freeways
    A Study of On-Freeway Lane Closure in the Merge Area of Two Freeways
    Fullerton, Richard V. ;
    McCasland, William R.
    1976-03-01 | PDF
    An On-Freeway Lane Closure to adjust the capacity of two roadways to a merge point in order to improve the efficiency of operation of the total I.H. 10-I.H. 610 interchange in Houston is evaluated. Delay studies conducted on I.H. 610 northbound show that closing the outside lane of I.H. 10 facilitates merge operations which result in a savings of a ...
  • The Wheat Farmers Contribution to Rising Bread Prices
    The Wheat Farmers' Contribution to Rising Bread Prices
    Wilson, William W. ;
    Griffin, Gene C.
    1976-03-01 | PDF
    The purpose of this paper is two-fold: 1) to demonstrate the fact that there has been a structural change with regard to the ingredient cost/retail cost relationship in recent years in the bread processing industry; and 2) to establish the fact that the American wheat farmer is neither the great benefactor nor cause of rising bread prices.
  • Prediction of Thermal Reflection Cracking in West Texas
    Prediction of Thermal Reflection Cracking in West Texas
    Chang, Hang-Sun ;
    Lytton, Robert L.
    1976-03-01 | PDF
    An economical means of rehabilitating deteriorated pavement is through the use of an overlay. The performance of overlay systems has, however, been far from satisfactory as the performance of any one system has varied widely among different installation sites. This study presents a rational approach for the prediction of overlay life and gives reco ...
  • North Dakota Grain Transportation Statistics 197475
    North Dakota Grain Transportation Statistics 1974–75
    Wilson, William W.
    1976-03-01 | PDF
    This report represents a continuation of analyses concerned with the patterns and methods of distributing grain 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 analyzed in Agr ...
  • CostEffectiveness Program for Roadside Safety Improvements on Texas Highways Volume Three CostEffectiveness Analysis Manual
    Cost-Effectiveness Program for Roadside Safety Improvements on Texas Highways: Volume Three, Cost-Effectiveness Analysis Manual
    Woods, Donald L. ;
    Weaver, Graeme D.
    1976-02-01 | PDF
    This report presents the general concept of the Cost-Effectiveness analysis procedure for roadside safety improvement alternatives, and the necessary information for interpretation and effective utilization of the Cost-Effectiveness computer program output. Typical outputs from the program are included to illustrate the development of the Cost-Effe ...
  • A Laboratory Evaluation of SulphurAsphalt Paving Mixtures Final Report
    A Laboratory Evaluation of Sulphur-Asphalt Paving Mixtures: Final Report
    Glascock, Lacey A.
    1976-02-01 | PDF
    This paper addresses a Three-Dimensional Loading Capacitated Vehicle Routing Problem (3L-CVRP) which combines a three-dimensional loading problem and vehicle routing problem in distribution logistics. The problem requires the combinatorial optimization of a feasible loading solution and a successive routing of vehicles to satisfy client demands, wh ...
  • Assessment of Community Planning for Mass Transit Volume 5 Denver Case Study
    Assessment of Community Planning for Mass Transit: Volume 5: Denver Case Study
    Skidmore, Owings & Merrill  ...
    1976-02-01 | PDF
    This report on urban transportation planning in the Denver metropolitan area is one of nine case studies undertaken by the Office of Technology Assessment to provide an information base for an overall assessment of community planning for mass transit. The findings of the overall study are reported in the summary document, An Assessment of Community ...
  • Noise Barrier Design Handbook 1976
    Noise Barrier Design Handbook [1976]
    Simpson, Myles A.
    1976-02-01 | PDF
    This handbook is intended to be a tool for use by the highway designer to aid in the design of noise abatement barriers. It provides a means of defining the geometric configuration of a barrier to produce a desired noise reduction, and also provides a design evaluation and selection procedure in which specific barriers are detailed, and then evalua ...
  • HighwayVehicleObject Simulation Model 1976 Vol 4 Engineering Manual Validation
    Highway-Vehicle-Object Simulation Model - 1976 [Vol. 4]: Engineering Manual - Validation
    Segal, David J.
    1976-02-01 | PDF
    A series of reports have been written to document revised and updated versions of the simulation of highway-vehicle-object interactions in a single vehicle highway environment. The programs documented were developed under FHWA sponsorship to provide the highway safety community with an analytical means of evaluating the effects of highway/roadside ...
  • Assessment of Community Planning for Mass Transit Volume 2 Atlanta Case Study
    Assessment of Community Planning for Mass Transit: Volume 2: Atlanta Case Study
    Skidmore, Owings & Merrill  ...
    1976-02-01 | PDF
    This report on urban transportation planning in the Atlanta, Georgia metropolitan area is one of nine case studies undertaken by the Office of Technology Assessment to provide an information base for an overall assessment of community planning for mass transit. The findings of the overall study are reported in the summary document, An Assessment of ...
  • Assessment of Injury Criteria in Roadside Barrier Tests
    Assessment of Injury Criteria in Roadside Barrier Tests
    Chi, M.
    1976-02-01 | PDF
    This report gives a summary of the evolution of present standards for testing roadside barriers in connection with the mitigation of human injuries. After a critical review of pertinent literature, a new set of injury criteria is recommended. These criteria are based on the average deceleration and the velocity change up to the instant of secondary ...
  • Assessment of Community Planning for Mass Transit Volume 3 Boston Case Study
    Assessment of Community Planning for Mass Transit: Volume 3: Boston Case Study
    Skidmore, Owings & Merrill  ...
    1976-02-01 | PDF
    This report on urban transportation planning in the Boston, Massachusetts metropolitan area is one of nine case studies undertaken by the Office of Technology Assessment to provide an information base for an overall assessment of community planning for mass transit. The findings of the overall study are reported in the summary document, An Assessme ...
  • HighwayVehicleObject Simulation Model 1976 Vol 2 Programmers Manual
    Highway-Vehicle-Object Simulation Model - 1976 [Vol. 2]: Programmers Manual
    Segal, David J.
    1976-02-01 | PDF
    A series of reports have been written to document revised and updated versions of the simulation of highway-vehicle-object interactions in a single vehicle highway environment. The programs documented were developed under FHWA sponsorship to provide the highway safety community with an analytical means of evaluating the effects of highway/roadside ...
  • Assessment of Community Planning for Mass Transit Volume 8 San Francisco Case Study
    Assessment of Community Planning for Mass Transit: Volume 8: San Francisco Case Study
    Skidmore, Owings & Merrill  ...
    1976-02-01 | PDF
    This report on urban transportation planning in the San Francisco Bay Area is one of nine case studies undertaken by the Office of Technology Assessment to provide an information base for an overall assessment of community planning for mass transit. The findings of the overall study are reported in the summary document, An Assessment of Community P ...
  • Assessment of Community Planning for Mass Transit Volume 4 Chicago Case Study
    Assessment of Community Planning for Mass Transit: Volume 4: Chicago Case Study
    Skidmore, Owings & Merrill  ...
    1976-02-01 | PDF
    This report on urban transportation planning in the Chicago metropolitan area is one of nine case studies undertaken by the Office of Technology Assessment to provide an information base for an overall assessment of community planning for mass transit. The findings of the overall study are reported in the summary document, An Assessment of Communit ...
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