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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 29241 - 29260 of 35452 results
  • Safety restraint use in Virginia use rate trends from 1983 through 1995
    Safety restraint use in Virginia : use rate trends from 1983 through 1995.
    Stoke, Charles B
    1996-01-01 | PDF
    The purpose of this report was to take a retrospective glance at Virginia's experience in getting her citizens to use the automobile safety restraint systems available to them. In Virginia, data on safety belt and child safety seat use were collected annually from 1983 until 1994. Data on child safety seat use were not collected in 1995, although s ...
  • An investigation of new inhibitors to mitigate rebar corrosion in concrete
    An investigation of new inhibitors to mitigate rebar corrosion in concrete.
    Taylor, S. R
    1996-01-01 | PDF
    Rebar corrosion in concrete is the most costly and performance-limiting problem facing the nation's infrastructure. One of the most practical and economical approaches to this problem is to use corrosion inhibitors in a quality concrete mix for new construction. This investigation examined the corrosion inhibition characteristics of a series of com ...
  • The Effect of reduced transmittance window tinting on drivers ability to detect targets in their rearview mirrors final report
    The Effect of reduced transmittance window tinting on drivers' ability to detect targets in their rear-view mirrors : final report.
    Proffitt, Dennis R
    1996-01-01 | PDF
    This study addressed the degree to which motor vehicle window tint films impede drivers' ability to detect targets in their vehicle's rear-view mirrors. Twenty-four subjects participated. Each sat in the driver's seat of one of four experimental vehicles and attempted to detect a stationary pedestrian in one of the three rear-view mirrors. Errors i ...
  • A field investigation of concrete overlays containing latex silica fume or Pyrament cement
    A field investigation of concrete overlays containing latex, silica fume, or Pyrament cement.
    Ozyildirim, H. Celik
    1996-01-01 | PDF
    This study evaluated latex-modified concretes (LMC) and concretes containing silica fume (SFC) or Pyrament-blended cement (PBCC) in bridge deck overlays in the field. The condition of the overlays was monitored for 4 years. LMC and SFC were placed in 2 days using a vibratory roller screed spanning half the width of the bridge, each side in 1 day. P ...
  • Use of the rapid immersion test to evaluate the efficacy of admixtures to mitigate alkalisilica reactivity
    Use of the rapid immersion test to evaluate the efficacy of admixtures to mitigate alkali-silica reactivity.
    Lane, D. Stephen
    1996-01-01 | PDF
    The Federal Highway Administration (FHWA) is conducting an interlaboratory study to validate certain findings in the Strategic Highway Research Program (SHRP) C-343 report on alkali-silica reactivity. This paper reports the Virginia Transportation Research Council (VTRC) findings relative to the rapid immersion test (AASHTO TP 14). Tests were condu ...
  • Initial laboratory studies of the nondestructive evaluation of concrete consolidation using a pulsed ultrasonic interferometer
    Initial laboratory studies of the nondestructive evaluation of concrete consolidation using a pulsed ultrasonic interferometer.
    Lozev, Margarit G
    1996-01-01 | PDF
    The objectives of this study were (1) to study the feasibility of using a pulsed, swept-frequency ultrasonic interferometer in the nondestructive evaluation of the degree of concrete consolidation and (2) to find a correlation between the degree of consolidation and the ultrasonic velocity calculated from the phase slope. The system developed incor ...
  • Structural stiffness identification of bridge superstructures final report
    Structural stiffness identification of bridge superstructures : final report.
    Hoadley, Peter W ;
    Gomez, Jose´ P
    1996-01-01 | PDF
    Accurate measures of bridge stiffness are important when determining structural integrity. This information should be an integral part of any comprehensive bridge maintenance program, especially considering the nation's aging infrastructure. Informed decisions regarding the placement or repair of an existing bridge require knowledge of the in-situ ...
  • Freezethaw durability of composite materials
    Freeze-thaw durability of composite materials.
    Gomez, Jose´ P ;
    Casto, Brian
    1996-01-01 | PDF
    Composite materials, produced from polymer resins and high strength fibers, have the potential to be widely used in construction because of their corrosion resistance and high strength-to-weight ratio, However, such environmental factors as extreme temperature fluctuation and water absorption adversely affect the material properties of composite ma ...
  • Evaluation of underdrain on I295
    Evaluation of underdrain on I-295.
    Hoppe, Edward J ;
    Wyant, David C
    1996-01-01 | PDF
    The effectiveness of shoulder edge drains on 1-295 south of Richmond was evaluated. Three adjacem outlets were monitored for outflow over a period of several momhs. Rainfall and outflow intensity and duration were continuously recorded using tipping bucket gages interfaced with a datalogger. The results indicated "excellent" to "good" quality of dr ...
  • Comparison of the operational and safety characteristics of the single point urban and diamond interchanges
    Comparison of the operational and safety characteristics of the single point urban and diamond interchanges.
    Garber, Nicholas J ;
    Smith, Michelle J
    1996-01-01 | PDF
    The purpose of this study was to evaluate and compare the safety and operational characteristics of the single point urban interchange (SPUI) and the diamond interchange (DI) and develop guidelines that identify traffic and/or geometric conditions that favor one type of interchange over the other. State traffic engineers across the country were sur ...
  • Guidelines for the effective operation and control of VDOT permanent variable message sign and highway advisory radio units state of the practice and recommendations technical assistance report
    Guidelines for the effective operation and control of VDOT permanent variable message sign and highway advisory radio units : state of the practice and recommendations : technical assistance report.
    Miller, John S
    1996-01-01 | PDF
    On January 31, 1996, VDOT's Statewide Incident Management (SIM) Committee requested that guidelines for the control of permanent variable message sign (VMS) and permanent highway advisory radio (HAR) units be developed. The guidelines do not address specific operating procedures, such as what words should be used in a message or how long a message ...
  • Dynamic field testing of the Route 58 Meherrin River bridge
    Dynamic field testing of the Route 58 Meherrin River bridge.
    Wolek, A. L
    1996-01-01 | PDF
    Dynamic response has long been recognized as one of the significant factors affecting the service life and safety of bridge structures, and considerable research, both analytical and experimental, has been devoted to this area of behavior. In the design of most contemporary bridges, dynamic effects are included in the form of equivalent static load ...
  • Determination of bridge response using acceleration data
    Determination of bridge response using acceleration data.
    Faulkner, Brent C
    1996-01-01 | PDF
    Knowledge of the actual displacement response of a bridge subjected to random traffic loading is useful in evaluating bridge performance and serviceability. However, mounting displacement transducers is difficult, and the feasibility of and cost associated with such instrumentation are often problems. This research evaluated various methods to calc ...
  • State of the art of advanced materials in transportation structures
    State of the art of advanced materials in transportation structures.
    McGhee, Kevin K ;
    Gomez, Jose´ P
    1996-01-01 | PDF
    Ever so slowly, advanced composite materials are entering the field of traditional civil engineering. This report surveys the current practice and ongoing research into their use in transportation structures. There is a broad spectrum of proposed and applied uses for reinforced plastics, ranging from complete structural systems to the replacement o ...
  • A survey of nonarched historic concrete bridges in Virginia constructed prior to 1950 final report
    A survey of non-arched historic concrete bridges in Virginia constructed prior to 1950 : final report.
    Miller, Ann Brush ;
    McGeehan, Daniel D
    1996-01-01 | PDF
    Bridges are among the cultural resources that must be considered for historic significance under the Historic Preservation Act of 1966. The Virginia Transportation Research Council conducted pioneering studies of Virginia's early metal truss bridges and concrete and masonry arch bridges during the 1970s and 1980s, but no comprehensive evaluation of ...
  • Index to FAA Office of Aviation Medicine Reports 1961 through 1995
    Index to FAA Office of Aviation Medicine Reports: 1961 through 1995
    Collins, William E. ;
    Wayda, Michael E.
    1996-01-01 | PDF
    An index to Federal Aviation Administration (FAA) Office of Aviation Medicine Reports (1964-1995) and Civil Aeromedical Institute Reports is presented for those engaged in aviation medicine and related activities. The index lists all FAA aviation medicine reports published from 1961 through 1995; chronologically (pp. 1-41), alphabetically by author ...
  • Human Factors in Aviation Maintenance Phase Five Progress Report
    Human Factors in Aviation Maintenance, Phase Five: Progress Report
    Shepherd, William T.
    1996-01-01 | PDF
    The fifth phase of research on human factors in aviation maintenance continued to look at the human's role in the aviation maintenance system via investigations, demonstrations, and evaluations of the research program outputs. This report describes the following areas: (Ch. 2) PENS mobile computing software for FAA inspectors; (Ch. 3) STAR computer ...
  • Conflict Probability Estimation for Free Flight
    Conflict Probability Estimation for Free Flight
    Paielli, Russell A. ;
    Erzberger, Heinz
    1996-01-01 | PDF
    The safety and efficiency of free flight will benefit from automated conflict prediction and resolution advisories. Conflict prediction is based on trajectory prediction and is less certain the farther in advance the prediction, however. An estimate is therefore needed of the probability that a conflict will occur, given a pair of predicted traject ...
  • Airline Quarterly Financial Review Second Quarter 1996 Majors
    Airline Quarterly Financial Review: Second Quarter 1996 Majors
    United States. Office of Aviation Analysis
    1996-01-01 | PDF
    This report contains staff comments, tables and charts on the financial condition of the U.S. major airlines.
  • Airline Quarterly Financial Review Third Quarter 1996 Majors
    Airline Quarterly Financial Review: Third Quarter 1996 Majors
    United States. Office of Aviation Analysis
    1996-01-01 | PDF
    This report contains staff comments, tables and charts on the financial condition of the U.S. major airlines.
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