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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 32801 - 32820 of 35440 results
  • Quality control of highway concrete containing fly ash
    Quality control of highway concrete containing fly ash.
    Halstead, Woodrow J
    1981-01-01 | PDF
    This report is essentially a synthesis of pertinent information concerning the use of fly ash as an ingredient in concrete for highway construction. It has been prepared to provide a basis for an adequate response by the Department of Highways and Transportation to requirements of the Resource Conservation and Recovery Act and the Environmental Pro ...
  • Efficiency of erosion control practices of the Virginia Department of Highways and Transportation interim report
    Efficiency of erosion control practices of the Virginia Department of Highways and Transportation : interim report.
    Wyant, David C
    1981-01-01 | PDF
    Stream monitoring stations have been installed on eight construction projects under Phase 1 of this study. Monitoring on four of the projects is complete and monitoring on the remaining four is continuing. On the basis of the limited data, it appears that the amount of suspended sediment transported from a construction project in the Valley and Rid ...
  • 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 ...
  • Jointless bridges final report
    Jointless bridges : final report.
    Zuk, William
    1981-01-01 | PDF
    The results of this study are reported in two parts. The first deals with the various methods states are employing to reduce the number of joints in bridge decks. The most common method is the use of integral abutments, where the superstructure is joined to a flexible type of abutment. Typical designs of integral abutments are illustrated in the In ...
  • Illinois method for the design of densegraded emulsion base mixes final report
    Illinois method for the design of dense-graded emulsion base mixes : final report.
    Hughes, Charles S
    1981-01-01 | PDF
    This study evaluated the practicality of using a basic test method developed at the University of Illinois. The report describes the use of the Illinois equation for predicting trial asphalt content, compares the results obtained with two CSS emulsions, and gives the results of resilient modulus tests. Also described is a cure and soak procedure th ...
  • The feasibility of using computer graphics in environmental evaluations interim report documenting historic site locations using computer graphics
    The feasibility of using computer graphics in environmental evaluations : interim report, documenting historic site locations using computer graphics.
    McGeehan, Daniel D.
    1981-01-01 | PDF
    This report describes a method for locating historic site information using a computer graphics program. If adopted for use by the Virginia Department of Highways and Transportation, this method should significantly reduce the time now required to determine the locations of historically significant sites and their proximity to highway and transport ...
  • Revenue sources for financing transportation safety activities in Virginia phase three feasibility of a surcharge on traffic fines
    Revenue sources for financing transportation safety activities in Virginia : phase three, feasibility of a surcharge on traffic fines.
    Heimbach, Thomas L. ;
    Mapp, Richard C.
    1981-01-01 | PDF
    Senate Bill 85, an action of the 1978 General Assembly, amended the Code of Virginia to provide, in part, that the Division of Highway Safety be succeeded by the newly created Department of Transportation Safety effective July 1, 1978. In its Declaration of Policy, section 33.1-390, the amended Code states that it is the policy of the Commonwealth ...
  • Vehicle accidents in highway work zones
    Vehicle accidents in highway work zones.
    United States. Traffic Systems Division
    1981-01-01 | 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 work zones. This was accomplished by examining the 2,127 reported work zone accidents that occurred in 1977 in Virginia. These represented rou ...
  • Twocourse bonded concrete bridge deck construction condition and performance after six years
    Two-course bonded concrete bridge deck construction : condition and performance after six years.
    Tyson, Samuel S
    1981-01-01 | PDF
    This report presents the findings from a six-year study of two-course bonded concrete bridge decks constructed in Virginia. Each of three special portland cement concretes was applied as an overlay, or wearing course, on two experimental spans. The overlays were a latex-modified, a low-water/cement and a wire-fiber concrete. Two spans constructed b ...
  • 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 ...
  • 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 ...
  • 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 ...
  • Predicting moistureinduced damage to asphaltic concrete field evaluation final report
    Predicting moisture-induced damage to asphaltic concrete : field evaluation : final report.
    Maupin, G. W
    1981-01-01 | PDF
    Virginia was one of seven agencies that participated in the evaluation of a stripping test developed under National Cooperative Highway Research Program Project 4-8(3). The test was used to predict stripping of a field test section and the test results were compared to stripping that occurred in the test section over a 5-year period. The stripping ...
  • 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 ...
  • 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 ...
  • Commonwealth of Virginia Department of Transportation Safety transportation safety plan for the period July 1 1981June 30 1982
    Commonwealth of Virginia, Department of Transportation Safety, transportation safety plan for the period July 1, 1981-June 30, 1982.
    Plevin, Amy J
    1981-01-01 | PDF
    Senate Bill 85, passed by the General Assembly in 1978, renamed the Highway Safety Division of Virginia the Department of Transportation Safety (VDTS) and authorized it to participate in the evaluation of current safety measures in all modes of transportation to recommend to the Governor and General Assembly possible corrective measures, policies a ...
  • Use of carbon black in bituminous concrete in Virginia
    Use of carbon black in bituminous concrete in Virginia.
    Maupin, G. W
    1981-01-01 | PDF
    In an attempt to verify the claim that the addition of carbon black to bituminous concrete increases its stability and performance, a test section placed on a deformed bridge deck surface near Altavista and one on Route 360 near Richmond are being evaluated. Marshall tests on samples of the mixtures taken at the time of placement indicated an incre ...
  • The effects of lowering the legal drinking age in Virginia final report
    The effects of lowering the legal drinking age in Virginia : final report.
    Lynn, Cheryl
    1981-01-01 | PDF
    On July 1, 1974, an amendment went into effect which lowered Virginia's legal drinking age for beer to 18 years; the minimum drinking age for wine and hard liquor was kept at 21. This move to extend adult drinking privileges to persons of military age had already been made in one form or another in about 30 other states. The most common practice am ...
  • A uniform transit safety records system for the Commonwealth of Virginia
    A uniform transit safety records system for the Commonwealth of Virginia.
    Bowman, Mark A
    1981-01-01 | PDF
    This study was conceived as the first phase of a three-phase program to develop a safety data base for intracity bus transit. It involved reviewing the state of the art of general transportation safety management, examining the current intracity bus safety records systems of the federal, state, and local governments and the transit industry, and de ...
  • 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 ...
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