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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 34061 - 34080 of 36710 results
  • Management of Urban Construction Programs Volume I Guidelines for Developing a Project Management Plan
    Management of Urban Construction Programs: Volume I: Guidelines for Developing a Project Management Plan
    National Research Council (U.S.). Building Research Advisory Board (BRAB)
    1981-01-01 | PDF
    This report of the BRAB Committee on Management of Urban Construction Programs is intended to guide local authorities (such as transportation, water, and sanitary agencies) in developing management plans for executing urban construction projects. The guidance presented has been developed from the perspective of the "project manager." Because of the ...
  • Pedestrian safety in Virginia accident characteristics and suggested revisions to Virginias pedestrian laws
    Pedestrian safety in Virginia : accident characteristics and suggested revisions to Virginia's pedestrian laws.
    Eilenberger, Dawn R
    1981-01-01 | PDF
    The purpose of the research reported here was to evaluate the nature, characteristics, and severity of accidents involving pedestrians in Virginia and to determine whether or not these data would suggest the need for changes in Virginia traffic laws affecting pedestrians. An analysis of data on pedestrian accidents in Virginia revealed a number of ...
  • Evaluation of portable retroreflectometer for use on pavement marking materials
    Evaluation of portable retroreflectometer for use on pavement marking materials.
    Shepard, Frank D
    1981-01-01 | PDF
    The subjective rating of the night visibility of pavement marking materials is difficult as it can be influenced by many variables. In an attempt to provide an improved method of determining the night visibility of these materials, a portable retroreflectometer was fabricated, and its precision and accuracy in determining night visibility were eval ...
  • Post Construction Evaluation of US 69 SulphurAsphalt Pavement Test Sections in Lufkin Texas Interim Report No7
    Post Construction Evaluation of U.S. 69 Sulphur-Asphalt Pavement Test Sections in Lufkin, Texas: Interim Report No.7
    Galloway, B. M. ;
    Benson, F. C.
    1981-01-01 | PDF
    This report is a part of the continuing post-construction evaluation of a Sulphur extended asphalt field trial located on U.S. 69 near Lufkin, Texas. It contains a discussion of the background methods of testing. In-situ test results and laboratory test results on cores are presented in tabular form with respect to pavement age. No significant dist ...
  • Effective field use of highrange waterreduced concrete final report
    Effective field use of high-range, water-reduced concrete : final report.
    Sprinkel, Michael M
    1981-01-01 | PDF
    This report describes the experience of the Virginia Department of Highways and Transportation with the use of high range, water reduced (HRWR) concrete. A description of the installation of the HRWR concrete in two pavements and four bridge decks, along with the results of evaluative tests, is given in Appendix A. Appendix B details the evaluation ...
  • 1975 1979 National Truck Characteristic Report 1981
    1975 - 1979 National Truck Characteristic Report (1981)
    United States. Federal Highway Administration
    1981-01-01 | PDF
    No Description
  • Motorist understanding of directional messages final report
    Motorist understanding of directional messages : final report.
    Perfater, Michael A
    1981-01-01 | PDF
    The report presents the findings of a study of motorists' perceptions of messages on interstate advance and supplemental guide signs. Approximately 5,100 questionnaires were distributed to motorists at eight rest areas on interstate highways in Virginia to determine the degree to which those motorists are confused by or misunderstand messages on gu ...
  • Albemarle County roads 17251816
    Albemarle County roads, 1725-1816.
    Pawlett, Nathaniel Mason
    1981-01-01 | PDF
    This publication is the result of an effort to write a history of the early road system of Albemarle County which could be used as a prototype for similar histories of other areas. This has involved research in such primary sources as court records, deeds, and plats and, in the secondary, printed materials on the county and state, as well as on-sit ...
  • Energy sensitivity of transportation planning techniques
    Energy sensitivity of transportation planning techniques.
    Grist, Debra A ;
    Demetsky, Michael J
    1981-01-01 | PDF
    This report first identifies the behavioral phenomena that underlie traveler responses to the cost and supply of transportation modes and services. Observations on individual travel behavior are aggregated to indicate land use and developmental changes that are anticipated to occur. These findings establish suggested future scenarios from which the ...
  • Identification analysis and remedial treatment of low guardrail in Virginia
    Identification, analysis, and remedial treatment of low guardrail in Virginia.
    Hargroves, Bradley T. ;
    Tyler, J. Stuart
    1981-01-01 | PDF
    Guardrails that are too low may fail to safely redirect errant vehicles; instead, the vehicles may vault the guardrails, resulting in severe accidents. An analysis of data on a small sample of guardrails throughout-Virginia showed that over 80% of the guardrails were lower than the current standard height of 27 in. The causes of low guardrail were ...
  • Investigation of concrete mixtures incorporating hollow plastic microspheres
    Investigation of concrete mixtures incorporating hollow plastic microspheres.
    Ozyildirim, H. Celik ;
    Sprinkel, Michael M
    1981-01-01 | PDF
    This study investigated the potential of hollow plastic microspheres, HPM, for providing non-air-entrained portland cement concrete resistance to damage from cycles of freezing and thawing. In the study, a mixture with an air-entraining agent (vinsol resin) was used as the control for comparison with three experimental mixtures one with HPM, one wi ...
  • Placement of lowslump concrete final report
    Placement of low-slump concrete : final report.
    Ozyildirim, H. Celik
    1981-01-01 | PDF
    Low-slump concrete is being used on bridge decks mainly to prevent or minimize spalling and delaminations resulting from corrosion of the reinforcing steel. Other beneficial effects reported include high strength and durability. This study investigated the field conditions necessary to achieve dense, impervious, good quality low-slump concrete that ...
  • Parttime Labor Work Rules and Transit Costs
    Part-time Labor, Work Rules, and Transit Costs
    Chomitz, Kenneth M. ;
    Lave, Charles A.
    1981-01-01 | PDF
    This report examines two major issues: (1)the impact of labor union work rules on bus transit operating costs and (2)the magnitude of cost savings that can be expected from the use of part-time drivers. These issues are examined within the context of finding ways to reduce transit deficits. The work rules analyzed include restrictions on part-time ...
  • Effect of antistripping additives on the compaction of bituminous concrete
    Effect of antistripping additives on the compaction of bituminous concrete.
    Maupin, G. W
    1981-01-01 | PDF
    The objective of this investigation was to determine the effect of antistripping additives on the compaction of bituminous concrete. To do this, the densities obtained on test sections with and without additive were compared. Comparisons of nuclear densities and the void contents of cores from the pavement revealed no significant differences. Also, ...
  • An approach to pavement management in Virginia
    An approach to pavement management in Virginia.
    McGhee, Kenneth H
    1981-01-01 | PDF
    The report summarizes the objectives and benefits of formal pavement management systems and outlines an approach believed by the author to be practical for Virginia. The management of Virginia interstate pavements and a proposed random-sampling plan for the primary and secondary systems are discussed. Five recommendations directed at initiating a p ...
  • Intercity bus service in Virginia
    Intercity bus service in Virginia.
    Allen, Gary R ;
    Arnold, E. D
    1981-01-01 | PDF
    The intercity bus industry in Virginia was examined to gain information on the status of the industry and to determine the likely impacts of state policy options relating to assistance and deregulation on the industry. The national intercity bus industry and other states' studies of and programs for the industry were also examined. Information conc ...
  • Evaluation of ARMCO sound barriers on two bridges on I495 final report
    Evaluation of ARMCO sound barriers on two bridges on I-495 : final report.
    Haviland, J. K ;
    Noble, David F
    1981-01-01 | PDF
    The purpose of this study was to determine the effectiveness of ARMCO double-wall, steel noise barriers attached to bridge parapets so as to provide continuity for roadside barriers. Measurements were taken opposite the sites of the discontinuities on two bridges before and after the gaps were filled. The measurements were recorded in both the anal ...
  • The pedestrian in the transportation system proposed traffic safety legislation
    The pedestrian in the transportation system : proposed traffic safety legislation.
    Stoke, Charles B ;
    Williams, Charles L
    1981-01-01 | PDF
    The purposes of this project were to review and evaluate Virginia's traffic laws related to pedestrians, compare provisions of the Code of Virginia with those of the statutes of other states and the Uniform Vehicle Code, and, if appropriate, propose amendments, additions, or deletions to the Code of Virginia which would enhance safe walking in the ...
  • Public attitudes toward transportation
    Public attitudes toward transportation.
    Perfater, Michael A ;
    Crowell, Sharon
    1981-01-01 | PDF
    A telephone survey of a thousand randomly selected Virginia residents found that the automobile was the most popular mode of travel, and that more work trips than trips for other purposes were being made by alternatives such as ride sharing, public transit, and non-motorized modes. While convenience and low cost were said to be the most important f ...
  • Airtoair heat recovery devices for small buildings interim report
    Air-to-air heat recovery devices for small buildings : interim report
    Zarling, JP
    1981-01-01 | PDF
    With the escalation of fuel costs, many people are turning to tighter, better insulated buildings as a means of achieving energy conservation. This is especially true in northern climates, where heating seasons are long and severe. Installing efficient well sealed vapor barriers and weather stripping and caulking around doors and windows reduces co ...
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