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The US Transportation Collection consists of documents from across all transportation modes with specific focus on research reports from US DOT, state DOTs, and other transportation organizations. Bookmark this collection: https://rosap.ntl.bts.gov/collection_ust or https://doi.org/10.21949/1530857.

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Showing 33841 - 33860 of 36710 results
  • Design Considerations for Roadways on Permafrost Final Report
    Design Considerations for Roadways on Permafrost Final Report
    Phukan, Arvind
    1982-01-01 | PDF
    Numerous design conceptions and construction techniques regarding roadways on permafrost have been published recently. In addition to varying climatic factors, difficult subsurface conditions are encountered in permafrost environments. This design guide was prepared to include all aspects of permafrost engineering pertinent to roadways, to bridge t ...
  • Evaluation of the performance of a presslam timber bridge bridge performance and load test after five years final report
    Evaluation of the performance of a press-lam timber bridge : bridge performance and load test after five years, final report.
    Sprinkel, Michael M
    1982-01-01 | PDF
    The report describes the results of the load tests and summarizes the collection of data on the dimensional changes and moisture content of the press-lain members and the number and types of vehicles using the bridge. The results of the load tests suggest that the AASHTO load distribution is conservative. Although the rails, wheel guards and posts ...
  • HPMS Vehicle Classification Case Study 1982
    HPMS Vehicle Classification Case Study (1982)
    United States. Federal Highway Administration
    1982-01-01 | PDF
    No Description
  • Evaluation of Microlon and TechnolG final report
    Evaluation of Microlon and Technol-G : final report.
    Sprinkel, Michael M
    1982-01-01 | PDF
    An evaluation was made of the cost-effectiveness of the automotive products Microlon, an engine treatment consisting of Teflon suspended in a solvent, and Technol-G, a gasoline treating additive consisting of a blend of aliphatic and aromatic distillates. Examined in the evaluation were engineering test reports provided by the manufacturers of the ...
  • Simulation of flashing signal operations
    Simulation of flashing signal operations.
    Moreno, Luis E ;
    Demetsky, Michael J
    1982-01-01 | PDF
    Various guidelines that have been proposed for the operation of traffic signals in the flashing mode were reviewed. The use of existing traffic simulation procedures to evaluate flashing signals was examined and a study methodology for simulating and evaluating potential flashing signal schemes was developed. A case study is described in which the ...
  • The quest for performancerelated specifications for hydraulic cement concrete
    The quest for performance-related specifications for hydraulic cement concrete.
    Halstead, Woodrow J
    1982-01-01 | PDF
    This paper reviews some of the problems associated with quality assurance for hydraulic cement concrete and the difficulties of relating the results of quality control and acceptance testing to the performance of the concrete facility. The importance of good control procedures and inspection of concrete placement by persons knowledgeable in concret ...
  • Precast concrete replacement slabs for bridge decks
    Precast concrete replacement slabs for bridge decks.
    Sprinkel, Michael M
    1982-01-01 | PDF
    The report illustrates and evaluates the first use in Virginia of precast concrete replacement slabs for bridge decks. It shows that a bridge deck can be replaced with the precast slabs while traffic is maintained in the adjacent traffic lane. The quality of the prototype deck appears to be comparable to that of a conventional site-cast deck and, a ...
  • Installation report evaluation of recycled hot mix asphaltic concrete on Route 220
    Installation report : evaluation of recycled hot mix asphaltic concrete on Route 220.
    Hughes, Charles S
    1982-01-01 | PDF
    This report describes a project in which the bituminous pavement on an approximately 8-mi. (13-km) section of roadway was removed, recycled through a conventional asphalt batch plant, and relaid. The project was accomplished with little difficulty and proved that recycling is an economical, feasible process. The asphaltic mix relaid consisted of ab ...
  • Evaluation of ChemCrete interim report
    Evaluation of Chem-Crete : interim report.
    Maupin, G. W
    1982-01-01 | PDF
    Two test sections, one on new construction and the other on a maintenance resurfacing project, were installed in the fall of 1980 to evaluate the proprietary asphalt product Chem-Crete. Dynaflect and density measurements were performed on the experimental and control mixes and the performance of the pavements is being evaluated. Raveling was notice ...
  • A survey and photographic inventory of metal truss bridges in Virginia 18651932 IX the Bristol Construction District
    A survey and photographic inventory of metal truss bridges in Virginia, 1865-1932 : IX, the Bristol Construction District.
    Spero, Paula A. C
    1982-01-01 | PDF
    In 1974 the Research Council initiated a statewide survey of metal truss bridges to identify any with historic significance. This pioneering effort was financed with state research funds as it was intended to aid the Virginia Department of Highways and Transportation in meeting its obligations mandated by various requirements of the environmental r ...
  • Construction and Benefits of RubberModified Asphalt Pavements
    Construction and Benefits of Rubber-Modified Asphalt Pavements
    Esch, David C.
    1982-01-01 | PDF
    A paving system was developed in Sweden in the 1960's in which relatively large rubber particles are incorporated into asphalt concrete pavements. The original purpose was to increase skid resistance and durability. This system, distributed under the trade names "Skega Asphalt" or "Rubit" in Scandinavia and "PlusRide" in the U.S.A., was also found ...
  • Collection and use of survey data
    Collection and use of survey data
    1982-01-01 | PDF
    This proceedings gathered by the National Academy of Sciences has focused on survey data, its collection and use. Five research papers are included: "Problems of nonreported trips in surveys of nonhome activity patterns;" "Estimation of cross-cordon origin-destination flows from cordon studies;" "Toward improved collection of 24-h travel records;" ...
  • Determination of rainfall losses in Virginia phase II final report
    Determination of rainfall losses in Virginia, phase II : final report.
    Cruise, James ;
    Yu, Shaw L
    1982-01-01 | PDF
    A procedure is presented by which regional unit hydrograph and loss rate parameters are estimated for the generation of design storm hydrographs for watershed in Virginia. The state is divided into seven hydrological regions, and unit hydrograph and loss rate parameters are computed for each region and then related to watershed characteristics such ...
  • An assessment of exclusive
    An assessment of exclusive.
    Perfater, Michael A
    1982-01-01 | PDF
    More than 70% of motorists returning a questionnaire distributed for the study favored the exclusive/permissive signal, while about 17% said the signal reduced delays, and 30% said it created a hazard. Intersections with one or more right-turn-on-red movements seemed especially susceptible to vehicular conflicts. The ratios of accidents involving l ...
  • Virginia method for the design of densegraded emulsion mixes
    Virginia method for the design of dense-graded emulsion mixes.
    Hughes, Charles S
    1982-01-01 | PDF
    An investigation into the Illinois method for the design of dense-graded emulsion base mixes had resulted in a report offering several modifications to that procedure. The Bituminous Research Advisory Committee then recommended that the Illinois method, along with the recommended modifications, be adopted for use in Virginia. This report was prepar ...
  • Installation report state demonstration project loop detectors
    Installation report, state demonstration project, loop detectors.
    Arnold, E. D ;
    Munn, G. L
    1982-01-01 | PDF
    The Virginia Department of Highways and Transportation frequently utilizes induction loops in its vehicle detector systems. Although not documented, there have been many instances of loop failure; therefore, the practices and materials used by the Department in installing loop detectors were investigated. Two field tests were undertaken- the encase ...
  • Alcohol control in Virginia planning documents for use by agencies of the Commonwealth
    Alcohol control in Virginia : planning documents for use by agencies of the Commonwealth.
    Virginia. Governor's Task Force to Combat Drunk Driving  ...
    1982-01-01 | PDF
    The Governor's Task Force to Combat Drunk Driving was created to confront the problem of drunken driving in Virginia, and to ascertain Virginia's current efforts to address this problem so that these efforts could be assessed and appropriate changes recommended. The planning documents presented in this report were designed to provide an overview of ...
  • New concepts in data analysis
    New concepts in data analysis
    National Research Council (U.S.). Transportation Research Board
    1982-01-01 | PDF
    Transportation Research Record 886 addresses "New Concepts in Data Analysis." The following papers are included within: "Origin-Destination Travel Survey for Southeast Michigan;" "Pilot Testing of Alternative Administrative Procedures and Survey Instruments;" "Vehicle Origin Survey;" "Analysis of Employee Residential Locations for Transit Planning; ...
  • Relative heating costs for Virginia Department of Highways and Transportation buildings
    Relative heating costs for Virginia Department of Highways and Transportation buildings.
    Pritchard, Alan C
    1982-01-01 | PDF
    This report presents the results of a survey of the energy used to heat various buildings owned and operated by the Virginia Department of Highways and Transportation. Energy intensity and cost intensity indices (EII and CII) for buildings were calculated. These can be used to indicate possible deficiencies in the heating and cooling systems of the ...
  • Efficiency of erosion control practices of the Virginia Department of Highways and Transportation final report
    Efficiency of erosion control practices of the Virginia Department of Highways and Transportation : final report.
    Wyant, David C
    1982-01-01 | PDF
    Twelve streams affected by highway construction were monitored to ascertain the effectiveness of the Virginia Department of Highways and Transportation's erosion and sediment control practices. The streams were located throughout Virginia in areas having different types of soil; viz., silts, sands, and clays. The results of the study indicate that ...
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