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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 33421 - 33440 of 36710 results
  • Iowa research with ChemCrete bitumen
    Iowa research with Chem-Crete bitumen.
    Jespersen, Del ;
    Jones, Kevin B.
    1984-01-01 | PDF
    With the spiraling cost of construction, coupled with inflation,engineers must develop and research new techniques to better utilizethe public's dollar. One area i n which these new technologies must beresearched is in the field of highway construction; more specifically,asphalt products.
  • Guide to the texturing of concrete bridge decks
    Guide to the texturing of concrete bridge decks.
    McKeel, Wallace T
    1984-01-01 | PDF
    The findings from this study were based on limited data. Requests for candidate structures for the inspections indicated that relatively few suitable bridges were available. Only 6 of those bridges could be skid tested. A further limitation was that, since the texturing specification was relatively new, the effect of traffic wear over a substantial ...
  • A review of research pertaining to asphalt composition and its relation to quality
    A review of research pertaining to asphalt composition and its relation to quality.
    Halstead, Woodrow J
    1984-01-01 | PDF
    This report reviews both early and recent research on asphalt quality with emphasis on compositional factors and how the findings of such research relate to present-day problems with asphalt cements and asphaltic paving mixtures. It is shown that historically the quality of an asphalt as a paving material has been judged by its physical characteris ...
  • Installation and oneyear evaluation of no 8 aggregate slurry seal and precoated chip seal
    Installation and one-year evaluation of no. 8 aggregate slurry seal and precoated chip seal.
    Payne, Charles W
    1984-01-01 | PDF
    This report describes the placement and early performance of experimental test sections on which No. 8 modified slurry seal and precoated No. 8 chip seal surface treatments were placed. From observations made during the installation and the performance after one year, it is concluded that the No. 8 modified slurry seal treatment has good potential ...
  • The effects of raising and lowering the minimum legal drinking age in Virginia
    The effects of raising and lowering the minimum legal drinking age in Virginia.
    Lynn, Cheryl
    1984-01-01 | PDF
    This report updates previous ones on the impact of raising and lowering the legal drinking age. Crash data from Virginia indicate the following: The percentage of all crashes that are alcohol-related have increased significantly since 1974 for persons under 16, 16 to 19 years, and 20 to 24 years. Such increases were not noted for adults. In 1982, w ...
  • Airbag Demonstration Program Volume I
    Airbag Demonstration Program: Volume I
    Esser, Robert C.
    1984-01-01 | PDF
    Sled tests were performed using a driver-only air bag system in conjunction with various belting systems to determine injury criteria using 5th, 50th, and 95th percentile dummies. This report is a compilation and description of those tests.
  • Problems with the performance of wooden noise barriers
    Problems with the performance of wooden noise barriers.
    Sterling, Amy J
    1984-01-01 | PDF
    In September 1984, the Research Council was requested by the Virginia Department of Highways and Transportation to conduct an investigation into the problems experienced with wooden noise barriers. Some of these barriers warped even before construction was completed, and gaps and splits were noted within a short period of time. A questionnaire surv ...
  • Use of video in the Virginia Highway and Transportation Research Council
    Use of video in the Virginia Highway and Transportation Research Council.
    Zuk, William
    1984-01-01 | PDF
    Described in this report is the video equipment recently acquired by the Council and how it has been used to date. Also discussed are the many other ways this equipment can and probably will be used in the future, not only at the Council, but in operating divisions of the Department as well. It is to be noted that this study originated as part of t ...
  • The relationship of written examination performance to safe driving a literature review with recommended methods for developing exams
    The relationship of written examination performance to safe driving : a literature review with recommended methods for developing exams.
    Atkins, Alden L
    1984-01-01 | PDF
    This report reviews the literature concerning written driver license examinations. The research literature shows that current written examinations are poor predictors of unsafe drivers. Although some studies demonstrate significant relationships between one's written examination score and accidents, these relationships are significant only for driv ...
  • Optimizing traffic count program a methology for estimating AADT volumes from shortduration counts
    Optimizing traffic count program : a methology for estimating AADT volumes from short-duration counts.
    Garber, Nicholas J
    1984-01-01 | PDF
    Estimates of annual average daily traffic (AADT) volumes are important in the planning and operations of state highway departments. These estimates are used in the planning of new construction and improvements of existing facilities, and, in some cases, in the allocation of maintenance funds. It is, therefore, important that any method used in obta ...
  • Travel measurement issues
    Travel measurement issues
    National Research Council (U.S.). Transportation Research Board
    1984-01-01 | PDF
    The proceedings include the following research papers: "Life-Cycle Concept: A Practical Application to Transportation Planning;" "Automobile Occupancy, Vehicle Trips, and Trip Purpose: Some Forecasting Problems;" "Successful Administration of a Mailed 24-Hour Travel Diary: A Case Study;" "Analysis of Geographical and Temporal Variation in Vehicle C ...
  • Considerations for administering underwater contracts
    Considerations for administering underwater contracts.
    McGeehan, Daniel D
    1984-01-01 | PDF
    State highway and transportation agencies are required to inspect all bridges on the public road system using guidelines established by AASHTO. Procedures for inspecting the superstructures are well known and the expertise to perform them is available within highway and transportation agencies. However, the need to inspect bridge structures in wate ...
  • A survey and photographic inventory of concrete and masonry arch bridges in Virginia
    A survey and photographic inventory of concrete and masonry arch bridges in Virginia.
    Spero, Paula A. C
    1984-01-01 | PDF
    In 1974 the Research Council initiated a statewide survey of metal truss bridges to identify any with historic significance. It was intended to aid the Virginia Department of Highways and Transportation in meeting its obligations mandated by various requirements of the environmental review process. This report presents the results of the statewide ...
  • Density test study
    Density test study.
    Hughes, Charles S
    1984-01-01 | PDF
    This report presents the results of an investigation of the comparison of percent density determinations between dry, 4 in. square sawed samples and 4 in. wet cores measured in both the field and the lab. Recommendations are given concerning the relationship between one sample per test site and more than one, and how to estimate the maximum theoret ...
  • Relation of asphalt chemistry to physical properties and specifications
    Relation of asphalt chemistry to physical properties and specifications.
    Halstead, Woodrow J
    1984-01-01 | PDF
    This report constitutes a synthesis of published information concerning the chemical composition and characteristics of asphalt cements used in highway construction. The general relations between chemical composition and physical properties and specifications are discussed from an engineering viewpoint. It is shown that asphalts are composed of so ...
  • Status report on pavement management
    Status report on pavement management.
    McGhee, Kenneth H
    1984-01-01 | PDF
    This report traces the developments in pavement management in the Virginia Department of Highways and Transportation from the initial efforts in the mid-1970s through early 1984. Included are status reports on pavement management for the interstate, primary, and secondary systems with examples of the monitoring procedures used, the outputs availabl ...
  • Roughness of overlays on bridge approaches as affected by pavement milling
    Roughness of overlays on bridge approaches as affected by pavement milling.
    Gunn, R. W ;
    McGhee, Kenneth H
    1984-01-01 | PDF
    Evaluation was made of the effectiveness of milling old asphaltic concrete surfaces for a short distance at bridge approaches in preparation for resurfacings. The results showed that such preparatory milling is highly effective in maintaining or improving pavement ride quality in the approach area. While geometrics or other considerations might pre ...
  • Development of a Statewide Traffic Counting Program Based on the HPMS 1984
    Development of a Statewide Traffic Counting Program Based on the HPMS (1984)
    United States. Federal Highway Administration
    1984-01-01 | PDF
    No Description
  • Orange County road orders 17341749
    Orange County road orders, 1734-1749.
    Miller, Ann Brush
    1984-01-01 | PDF
    The establishment and maintenance of public roads were among the most important functions of the county court during the colonial period in Virginia. Each road was opened and maintained by an overseer (or surveyor) of the highways, who was appointed each year by the Gentlemen Justices. The overseer was usually assigned all the able-bodied men (the ...
  • Recommendations for LifeCycle Monitoring Projects
    Recommendations for Life-Cycle Monitoring Projects
    Lytton, Robert L. ;
    Hilger, Barbara A
    1984-01-01 | PDF
    The report is separated into chapters covering recommendations on the composition of the Pavement Data Users Committee, life-cycle monitoring projects for both flexible and rigid pavements, standard data collection and coding formats, data management system, and the recommended work plan for the monitoring effort.
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