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Showing 34741 - 34760 of 36747 results
  • Energy use and conservation in highway construction and maintenance
    Energy use and conservation in highway construction and maintenance.
    Halstead, Woodrow J
    1978-01-01 | PDF
    This report reviews the options available to the highway engineer for the conservation of energy in highway construction and maintenance. In general, it was found that the objective of conserving energy is closely related to long-standing objectives to reduce costs and to conserve materials. Because poorly constructed or maintained roads result in ...
  • Opportunities for energy conservation in transportation planning and systems management
    Opportunities for energy conservation in transportation planning and systems management.
    Arnold, E. D
    1978-01-01 | PDF
    This report is a summary, based primarily on a literature review, of the energy-savings potential of the elements in the transportation planning process and systems management. Within the scope of long-range planning, the energy aspects of land use and mode of transportation were investigated, whereas for the short range the energy potential of the ...
  • Virginia Department of Highways and Transportation skid testing equipment correlation results 1974 1975 and 1978
    Virginia Department of Highways and Transportation skid testing equipment correlation results, 1974, 1975, and 1978.
    Runkle, Stephen N
    1978-01-01 | PDF
    The purpose of this study was to modify, as required, the previously established relationships between the VHTRC skid trailer, the VHTRC stopping distance car, and the first VDHT skid trailer, and to develop appropriate relationships with the above three devices for the second, recently acquired VDHT trailer. Regression equations indicating the rel ...
  • The Virginia Department of Highways and Transportations exemption from the requirements for filing environmental impact statements under the states Environmental Quality Act
    The Virginia Department of Highways and Transportation's exemption from the requirements for filing environmental impact statements under the state's Environmental Quality Act.
    McGeehan, Daniel D ;
    Hevener, Mary Bell H
    1978-01-01 | PDF
    The report gives four cogent arguments for the Department's being exempted from the requirement to file environmental impact statements on state-funded projects.
  • Repeal and modification of mandatory motorcycle helmet legislation a review of available information final report
    Repeal and modification of mandatory motorcycle helmet legislation : a review of available information : final report.
    Lynn, Cheryl
    1978-01-01 | PDF
    In 1975, Congress relieved the Secretary of Transportation of the power to impose sanctions upon states for not having a law requiring the use of helmets by motorcyclists. Shortly afterward, the states having such laws began repealing or modifying them. This report reviews the available literature on the subject of mandatory motorcycle helmet legis ...
  • Utilizing the public opinion questionnaire to answer policy and process questions
    Utilizing the public opinion questionnaire to answer policy and process questions.
    Perfater, Michael A
    1978-01-01 | PDF
    The public opinion questionnaire used in this study was designed to provide the Department information regarding public involvement procedures as viewed by the public, as well as to provide insight into citizen opinion regarding the specifics of the projects on which it was tested. It was found to serve both functions very well. The study has provi ...
  • HPMS Phase I Report 1978
    HPMS Phase I Report (1978)
    United States. Federal Highway Administration
    1978-01-01 | PDF
    No Description
  • A management system for evaluating the Virginia periodic motor vehicle inspection program software manual and implementation procedures final report
    A management system for evaluating the Virginia periodic motor vehicle inspection program : software manual and implementation procedures : final report.
    Korf, Jerry L ;
    Harris, Philip S
    1978-01-01 | PDF
    This report deals with the Periodic Motor Vehicle Inspection Management Evaluation System software documentation and implementation procedures. A companion report entitled "A Management System for Evaluating the Virginia Periodic Motor Vehicle Inspection Program" by Deborah Mitchell gives the genesis of this project, describes the development of th ...
  • Graphical methods for determining moduli of pavement and sublayers from deflection data
    Graphical methods for determining moduli of pavement and sublayers from deflection data.
    Vaswani, Nari K
    1978-01-01 | PDF
    In this investigation a relationship between the ratio of the moduli of two layers in a two-layer pavement system and the ratio of deflections in a load deflected basin was developed. Charts correlating the relationship between these ratios are given in the report. By means of these charts, the moduli of the asphaltic concrete layers and the sublay ...
  • Semiannual versus annual motor vehicle inspection an evaluation of the literature and a benefitcost analysis
    Semiannual versus annual motor vehicle inspection : an evaluation of the literature and a benefit-cost analysis.
    Abbene, John J
    1978-01-01 | PDF
    The purpose of this report is to provide information comparing semiannual motor vehicle inspection systems with annual inspection systems. A review of the literature dealing with the similarities and differences between semiannual and annual programs was conducted. Some of the reports reviewed investigated the causes of motor vehicle accidents, whi ...
  • Continuous freeway illumination and accidents on a section of Rte I95
    Continuous freeway illumination and accidents on a section of Rte. I-95.
    Hilton, Marvin H
    1978 | PDF
    Beginning with the oil embargo of 1973-74, highway lighting and particularly continuous lighting on freeways became one of the first items to be cut back to conserve energy and revenue. During this period of energy shortage, considerable lighting was turned off in Virginia and in particular the 13.8 km (8.57 mi) section of continuous lighting on I- ...
  • Accessibility Experimentation and the Evaluation of Transportation Developments for Disadvantaged Groups
    Accessibility, Experimentation, and the Evaluation of Transportation Developments for Disadvantaged Groups
    Schmitt, Rolf R.
    1978-01-01 | PDF
    This study examines the methods used for evaluating transportation developments, particularly those for disadvantaged groups. Two methodological questions are examined: what measures characterize the social condition to be ameliorated, most effectively utilized? and in what evaluation framework are these measures The social condition is interpreted ...
  • Vehicle accidents at maintenance and utility work zones
    Vehicle accidents at maintenance and utility work zones.
    Hargroves, Bradley T.
    1978 | PDF
    The objective of this study was to determine the magnitude and characteristics of safety problems, in terms of reported accidents, that are associated with moving vehicular traffic around and through highway maintenance and utility work zones. This was accomplished by examining 280 maintenance and utility work zone accidents that occurred on the Vi ...
  • Parking Garage Planning and Operation
    Parking Garage Planning and Operation
    Weant, Robert A.
    1978-01-01 | PDF
    Parking facilities are a basic part of the modem community's transportation system. They profoundly influence economic viability, and consequently are a major concern to public administrators, businessmen, shoppers, workers, and in fact to everyone who drives an automobile. Because of its importance, parking has been the subject of numerous papers, ...
  • Energy conservation in Department of Highways and Transportation buildings
    Energy conservation in Department of Highways and Transportation buildings.
    Halstead, Woodrow J ;
    McGhee, Kenneth H
    1978-01-01 | PDF
    This report reviews the policy of the Virginia Department of Highways and Transportation toward energy conservation in the operation of its buildings and recommends further measures for conserving energy. The major conclusions are 1. The established policy within the Department is to conserve energy whenever possible, and top level administrators s ...
  • Profile A Rail Hump Classification Yard Gradient Simulation
    Profile: A Rail Hump Classification Yard Gradient Simulation
    Stock, William A ;
    Sakasita, Masami
    1978-01-01 | PDF
    Designers of rail hump yards traditionally go through a tedious, long manual process to optimally design the hump grades and retarder placements. This design process involves checking velocities and headways of a worst-case sequence of cars to ensure that proper values of the variables can be maintained on the gradient. This paper presents a comput ...
  • Human Respiratory Considerations for Civil Transport Aircraft Oxygen System
    Human Respiratory Considerations for Civil Transport Aircraft Oxygen System
    McFadden, E.B.
    1978-01-01 | PDF
    This report is intended to acquaint personnel involved in the design, inspection, and maintenance of civil transport oxygen systems with the human respiratory requirements and oxygen system design considerations necessary to effect an interface and provide acceptable high-altitude life support. Simplified explanations and language that should be un ...
  • The Applicability of Infrared Thermography in the Detection of Delamination in Bridge Decks
    The Applicability of Infrared Thermography in the Detection of Delamination in Bridge Decks
    McKeel, Wallace T., ;
    Clemeña, Gerardo G.
    1977-12-01 | PDF
    The use of infrared thermography to very accurately define variations in surface temperatures was evaluated as a means of identifying delaminated areas caused by corrosion of reinforcing steel in concrete bridge decks. It was found that because of the vast differences in the volumetric heats of the solid concrete and the air in the cracks around a ...
  • Yard Computer Systems Preliminary Assessment
    Yard Computer Systems: Preliminary Assessment
    Wong, Peter J
    1977-12-01 | PDF
    Certain generic functions need to be performed in most modern hump yards, including: Control of retarders; Control of switches; Control of signals/communications requirements of yard engine movements; Yard inventory tracking; Receive/process/transmit advance train consist information; Receive/process/transmit accounting and financial information su ...
  • Development of new selection tests for air traffic controllers
    Development of new selection tests for air traffic controllers.
    Dailey, John T. ;
    Prickrel, Evan W.
    1977-12-01 | PDF
    This report describes the development of a new Multiplex Controller Aptitude Test for initial screening of FAA Air Traffic Controller applicants. Its content includes the traditional types of aptitude test items used for today's screening. In addition it includes measurement of the ability to identify potential conflicts in air traffic, a skill tha ...
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