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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 34561 - 34580 of 35440 results
  • Bridge aesthetic rating diagrams
    Bridge aesthetic rating diagrams.
    Zuk, William
    1971-01-01 | PDF
    Presented is a systematic methodology for rationally determining the esthetic appeal of bridge designs by the use of paired line drawings where one visual factor at a time is varied. These paired drawings are then judged by either a preselected or randomly selected group of people. An example (using a standard bridge overpass) is selected as a vehi ...
  • A manual for conducting environmental impact studies
    A manual for conducting environmental impact studies.
    Walton, L. Ellis ;
    Lewis, James E
    1971-01-01 | PDF
    This report suggests methodologies which should enable an interdisciplinary team to assess community values. The methodologies are applicable to the conceptual, location, and design phases of highway planning, respectively. The approach employs a weighted value technique for comparison of the monetary, quantifiable and qualitative factors of altern ...
  • A Theory of driver motivation the results of structured group interviews with civic and service club groups traffic safety views of older drivers
    A Theory of driver motivation : the results of structured group interviews with civic and service club groups : traffic safety views of older drivers.
    Virginia Highway Research Council
    1971-01-01 | PDF
    Although there were divisions in opinions pertaining to many matters in highway safety, there was a general consensus over the following items: (1) Personal automobiles are the most convenient form of transportation. While there are other modes of mobility, they only delay the inevitable function of an individual operating a motor vehicle to reach ...
  • Slipperiness of highway pavements phase 1 final report
    Slipperiness of highway pavements : phase 1, final report.
    Mahone, David C ;
    Runkle, Stephen N
    1971 | PDF
    To gain knowledge of the wet friction levels needed for various traffic conditions, this study evaluated the relationships between (1) accumulated traffic volumes and pavement friction, and (2) percent wet accidents and pavement friction. In addition the study evaluated speed gradients and machine correlations, and selected thirty test sites for co ...
  • Highway signing for safety
    Highway signing for safety.
    Shepard, Frank D
    1971 | PDF
    Signing that effectively warns the motorist of temporary obstructions on or near a roadway is essential to traffic safety. The general objective of this study was to become familiar with and investigate the suitability of various temporary maintenance signing conditions, with particular attention being given to certain sign combinations and message ...
  • Driving under the influence of alcohol determining an optimum sanction
    Driving under the influence of alcohol : determining an optimum sanction.
    Ames, W. A ;
    Peters, Eric G
    1971-01-01 | PDF
    Numerous elements must be considered in the design of an optimal statutory scheme for the definition and enforcement of the prohibition against driving under the influence of alcohol. Psychological factors determine the extent to which the statute has deterrent effect. Administrative factors affect the ability of police officers and judicial person ...
  • A Paint System for the Benjamin Harrison Bridge
    A Paint System for the Benjamin Harrison Bridge
    Creech, Marion F ;
    Clemeña, Gerardo G.
    1971-01-01 | PDF
    In order to find out what was causing the paint failure on the Benjamin Harrison Bridge, two trips to the bridge and surrounding area were made. These field inspections revealed that the west side of the bridge the side facing the chemical plants was noticeably more corroded than the east side. The prevailing wind is from the direction of the plant ...
  • Department of Transportation Federal Highway Administration environmental impact statement for Interstate Route 66 13 mile section from Glebe Road to Lee Highway Arlington County Virginia
    Department of Transportation Federal Highway Administration environmental impact statement for Interstate Route 66, 1.3 mile section from Glebe Road to Lee Highway, Arlington County, Virginia.
    Walton, L. Ellis
    1971-01-01 | PDF
    The Virginia Department of Highways has undertaken a comprehensive environmental study of a nine-mile section of Interstate Route I-66. This precedent setting study is the Department's attempt to make this a model highway to the nation's capital. The environmental features included in this specific project demonstrate clearly that a highway can be ...
  • Environmental impact case study Martinsville bypass
    Environmental impact case study : Martinsville bypass.
    McGeehan, Daniel D ;
    Walton, L. Ellis
    1971-01-01 | PDF
    At the request of the Environmental Quality Division, the Environmental and Economics Section of the Virginia Highway Research Council conducted an environmental impact study of the proposed Route 220 bypass around Martinsville. This evaluation of the social, economic, and environmental considerations was initiated as part of the Department's effor ...
  • A comparative study of aluminum and steel culverts progress report no 4
    A comparative study of aluminum and steel culverts : progress report no. 4.
    McKeel, Wallace T
    1971-01-01 | PDF
    The results of a comparative study of aluminum and steel culverts at six test sites throughout Virginia indicate that satisfactory durability can be expected of aluminum pipe under exposure to most of the soil and water conditions in the state. The performance of the bare aluminum culverts suggests that bituminous coating of the pipes or paving of ...
  • A method for evaluating the structural performance of subgrades andor the overlying flexible pavements
    A method for evaluating the structural performance of subgrades and/or the overlying flexible pavements.
    Vaswani, N. K
    1971-01-01 | PDF
    The structural evaluation of flexible pavement is now carried out mostly by deflection measuring devices such as the dynaflect or Benkelman beam. The object of this investigation was to determine whether the properties of the deflected basin measured by these devices on the pavement surfaces could enable evaluation of the subgrade and/or its overly ...
  • Bituminous concrete overlay studies
    Bituminous concrete overlay studies.
    McGhee, Kenneth H
    1971-01-01 | PDF
    Deflection tests conducted on eight sections of primary highway, both before and after asphaltic concrete resurfacings, were analyzed as a study of the utility of such tests in the design of overlays. The application of tentative traffic and allowable deflection criteria showed that seven of the eight projects had deflections reduced to a satisfact ...
  • A manual for using the highway noise analysis program Noisesim
    A manual for using the highway noise analysis program "Noisesim".
    Walton, L. Ellis
    1971-01-01 | PDF
    Noisesim was developed under a National Cooperative Highway Research Program study by Boilt, Beranek and Newman of Van Nuys, California. According to the NCHRP, Virginia was the first state to implement this program and utilize the findings for predicting noise simulations for future highways. The implementation of this computer program was viewed ...
  • The criticality of sieve size in asphaltic concrete mixes as measured by volumetric properties and stabilities
    The criticality of sieve size in asphaltic concrete mixes as measured by volumetric properties and stabilities.
    Aderhold, J. Wayne
    1971-01-01 | PDF
    The purpose of this study was to investigate the effects of deviations from the specified aggregate gradation on the stability and volumetric properties of the S-5 mix. The project involved two phases of experimental work. The first phase consisted of designing a control mix to be used as a standard for comparison with the experimental mixes. The m ...
  • An evaluation of two bridge deck overlay systems on the Rte 85 bridges over the Roanoke River
    An evaluation of two bridge deck overlay systems on the Rte. 85 bridges over the Roanoke River.
    Hilton, Marvin H
    1971-01-01 | PDF
    Because of exposed reinforcing steel in some areas of the decks, the interstate route 85 bridges over the Roanoke River were treated with overlays in August 1969. In order to evaluate two different materials on a comparative basis, the Department of Highways decided to apply a Guardkote 250 (epoxy) mortarmix overlay to the SBL deck, and a latex (DO ...
  • Legislative recommendations of the Virginia Highway Safety Commission to the 1972 Virginia General Assembly
    Legislative recommendations of the Virginia Highway Safety Commission to the 1972 Virginia General Assembly.
    Micas, Steven L
    1971-01-01 | PDF
    In 1970, alcohol contributed to the deaths of over 340 drivers on the Commonwealth of Virginia's roads and a total of 19,000 crashes. Until 1972, Virginia retained the 0.15% presumptive level of intoxication. Advantages of the 0.10% presumptive level included increased deterrence and greater concurrence with medical knowledge as to when a driver's ...
  • Selfstressed sandwich bridge decks
    Self-stressed sandwich bridge decks.
    Zuk, William ;
    Sinha, R. S
    1971-01-01 | PDF
    Proposed is an entirely new type of bridge deck, consisting of an unreinforced lightweight concrete slab made of expanding cement sandwiched between two thin plates of steel. The expanding core serves to prestress the panel. Laboratory tests were conducted on the expansion characteristics of the concrete to determine predictable relationships for e ...
  • Driving records of persons 65 years of age and older are insurance rate reductions warranted
    Driving records of persons 65 years of age and older : are insurance rate reductions warranted?.
    Simpson, Clinton H
    1971-01-01 | PDF
    There are many elements that constitute the makeup of the automobile insurance premium, the major ones being age, sex, marital, status, and the utilization of the automobile. While the biological aging process places health limitations on drivers age 65 and older, which in turn affect their driving performance and safety, they nevertheless experien ...
  • Proposed methodology for estimating the impact of highway improvements on urban air pollution
    Proposed methodology for estimating the impact of highway improvements on urban air pollution.
    Reed, Wallace E
    1971-01-01 | PDF
    The aim of this methodology is to indicate the expected change in ambient air quality in the vicinity of a highway improvement and in the total background level of urban air pollution resulting from the highway improvement. Both the jurisdiction in which it is located and groups living adjacent to the proposed improvement should be made aware of th ...
  • Environmental impact case study Project 0100077105 C501 Dublin Virginia
    Environmental impact case study : Project 0100-077-105, C-501 : Dublin, Virginia.
    Schafer, Scott ;
    McGeehan, Daniel D
    1971-01-01 | PDF
    At the request of the Environmental Quality Division of the Virginia Department of Highways, the Environmental and Economics Section of the Virginia Highway Research Council conducted a study to determine the probable socioeconomic and environmental impact of the proposed improvement of Route 100 north of Dublin. This evaluation was a part of the D ...
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