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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 30841 - 30860 of 35412 results
  • The New Suburb Guidelines for Transit Sensitive Suburban Land Use Design Study of Land Use and Transportation in the Suburbs Report Two
    The New Suburb: Guidelines for Transit Sensitive Suburban Land Use Design: Study of Land Use and Transportation in the Suburbs: Report Two
    Beimborn, Edward ;
    Rabinowitz, Harvey
    1991-07-01 | PDF
    This report provides guidelines for the planning and design of land use patterns that are sensitive to the needs of public transit. These guidelines are meant to create an efficient environment for future growth in suburban areas. The guidelines have been prepared from a market-based point of view. Design elements are proposed that directly address ...
  • Two studies on participation in decisionmaking and equity among FAA personnel
    Two studies on participation in decision-making and equity among FAA personnel.
    Witt, L. Alan ;
    Myers, Jennifer G.
    1991-07-01 | PDF
    Study 1 Moderated multiple regression analyses on data collected from 2,177 FAA air traffic controller specialists indicated that equity perceptions moderated the relationship between participation in decision-making and level of job satisfaction. Specifically, the correlation between participation in decision-making and job satisfaction scores was ...
  • Exchange Ideology as a Moderator of the Procedural JusticeSatisfaction Relationship
    Exchange Ideology as a Moderator of the Procedural Justice-Satisfaction Relationship
    Witt, Lawrence A. ;
    Broach, Dana
    1991-07-01 | PDF
    The present study of 92 civilian Federal Government employees in a 2-month, full-time training program tested the hypothesis that exchange ideology would moderate the relationship between procedural justice perceptions and satisfaction with the training experience. Exchange ideology refers to the relationship between what the individual receives an ...
  • Study for a Comprehensive Bridge Management System for Texas
    Study for a Comprehensive Bridge Management System for Texas
    Stukhart, George ;
    James, Ray W.
    1991-07-01 | PDF
    This report covers a two-year study of the feasibility and development of specific recommendations for a comprehensive bridge management system (BMS) for the Texas State Department of Highways and Public Transportation. The study identified the problems which could advantageously be addressed by a BMS and recommends a scope for a proposed BMS which ...
  • An Analysis of Expected Delay Reduction by Replacing a Congested AtGrade Intersection with an Interchange
    An Analysis of Expected Delay Reduction by Replacing a Congested At-Grade Intersection with an Interchange
    Raza, Syed Shariq ;
    Stover, Vergil G.
    1991-07-01 | PDF
    This research has documented calibration of an off-line computer traffic simulation mode, TRANSYT-7F, in terms of its suitability to model traffic flow through signalized streets, especially for saturated conditions. The latter half of this research is devoted to evaluating the potential effectiveness of grade separation at congested intersections ...
  • Alkali Reactivity of Concrete Aggregates
    Alkali Reactivity of Concrete Aggregates
    Ramakrishnan, V. ;
    Ramachandran, Suresh
    1991-06-30 | PDF
    This report presents the results of a study to determine whether aggregates are reactive and to determine the influence of fly ash in reducing the expansion due to alkali-aggregate reaction. Ten sand samples collected from various locations in South Dakota were supplied by the South Dakota Department of Transportation. The sands were tested for che ...
  • Controller Evaluation of Initial Data Link en Route Air Traffic Control Services Mini Study 3
    Controller Evaluation of Initial Data Link en Route Air Traffic Control Services: Mini Study 3
    William J. Hughes Technical Center (U.S.). Data Link Development Team  ...
    1991-06-01 | PDF
    This report documents a Federal Aviation Administration controller evaluation of air traffic control (ATC) Data Link services planned for implementation in the en route ATC system. The main body of the report includes a detailed description of the objectives of the study and of the technical approach and test methods that were used. In addition, th ...
  • Format and basic geometry of a perspective display of air traffic for the cockpit
    Format and basic geometry of a perspective display of air traffic for the cockpit
    McGreevy, Michael ;
    Ellis, Stephen
    1991-06-01 | PDF
    The design and implementation of a perspective display of air traffic for the cockpit is discussed. Parameters of the perspective are variable and interactive so that the appearance of the projected image can be widely varied. This approach makes allowances for exploration of perspective parameters and the air interactions. The display was initiall ...
  • Feasibility of applying cathodic protection to underground culverts
    Feasibility of applying cathodic protection to underground culverts.
    Garber, J. D. ;
    Lin, J. H.
    1991-06-01 | PDF
    The Louisiana Department of Transportation and Development uses metal culverts in various parts of the state. This study was undertaken to assess the feasibility of applying cathodic protection both externally and internally to metal culverts to prevent corrosion from occurring. The methodology employed ranged from a variety of laboratory tests to ...
  • Oregon asphaltconcrete Bmix improvement study final report
    Oregon asphalt-concrete B-mix improvement study : final report.
    George, Anthony J. ;
    Dominick, Dick
    1991-06-01 | PDF
    No Description
  • Latex modified asphalt and experimental joint treatments on asphalt concrete overlays experimental project No 3 asphalt additives final report
    Latex modified asphalt and experimental joint treatments on asphalt concrete overlays experimental project No. 3 : asphalt additives : final report.
    King, William M. ;
    Doucet, Roland J.
    1991-06-01 | PDF
    This report documents the construction, initial evaluation and final evaluation of several experimental features which were incorporated as part of an overlay of an existing PCC pavement in order to determine the feasibility of extending the asphaltic concrete overlay service life. The experimental features utilized were several type of waterproofi ...
  • Report on the 1990 European Asphalt Study Tour
    Report on the 1990 European Asphalt Study Tour
    American Association of State Highway and Transportation Officials  ...
    1991-06-01 | PDF
    In mid-September 1990, a team of pavement specialists from the United States participated in a 2-week study tour of six European nations. The tour, designated the European Asphalt Study Tour (EAST), was arranged through the efforts of the National Asphalt Pavement Association (NAPA), the American Association of of State Highway and Transportation O ...
  • ACCRC adjacent lane surfacing construction report
    AC/CRC adjacent lane surfacing : construction report.
    Selkirk, Kyle T. ;
    Miller, Bo
    1991-06-01 | PDF
    Asphaltic Concrete (AC) and Portland Cement Concrete (PCC) are common roadway materials used in Oregon. In a recent construction project -- Poverty Flats/Mecham Section -- the Oregon State Highway Division (OSHD) designed, as part of the project, a "test section" consisting of one AC lane and one Continuously Reinforced Concrete (CRC) land parallel ...
  • Assessment and Improvement of Motorist Understanding of Traffic Control Devices
    Assessment and Improvement of Motorist Understanding of Traffic Control Devices
    Mounce, John M. ;
    Hawkins Jr., H. G.
    1991-06-01 | PDF
    A three-year study of motorist understanding of traffic control devices is currently under progress. The objective of the study is to conduct a detailed assessment of motorist comprehension of signs, signals, and markings utilizing a statistically valid survey of Texas motorists. Those traffic control devices determined to be less than adequately u ...
  • An Evaluation of the Houston HighOccupancy Vehicle Lane System
    An Evaluation of the Houston High-Occupancy Vehicle Lane System
    Christiansen, Dennis L. ;
    Morris, Daniel E.
    1991-06-01 | PDF
    This report evaluates the operation of the Houston freeway high-occupancy vehicle (HOV) lane system through calendar year 1990. As of the end of 1990, HOV lanes were in operation on four Houston freeways: Katy Freeway (l-10); North Freeway (I-45); Northwest Freeway (US 290); and Gulf Freeway (I-45). Since 1988, an annual report has been prepared th ...
  • Analysis of Accidents at LongTerm Construction Projects in Texas
    Analysis of Accidents at Long-Term Construction Projects in Texas
    Ullman, G. L. ;
    Krammes, R. A.
    1991-06-01 | PDF
    This report presents an analysis of accidents at five long-term freeway construction projects in Texas during 1984-1988. Data were collected from each project for two to three years prior to construction and for all years during construction through 1988. Total accidents on the main lanes increased an average of 28.7% during construction. Severe ac ...
  • IGrds Practice Problems
    IGrds Practice Problems
    Feldman, S. A.
    1991-06-01 | PDF
    This document provides instructions and practice problems to help new users of IGrds TM become acquainted with IGrdsTM commands. Three lessons are provided: (1) horizontal alignment commands, (2) vertical alignment commands, and (3) general geometry commands. Each lesson consists of an instruction manual and an IGrdsTM project file. The instruction ...
  • Development of RDSIGrds SelfInstructional Course Materials
    Development of RDS/IGrds Self-Instructional Course Materials
    Krammes, Raymond A. ;
    Blaschke, Joseph D.
    1991-06-01 | PDF
    This report documents the review of currently available RDS/IGrds training materials, survey of training needs, and development of self-instructional training materials to satisfy the most critical identified need. New users of IGrds require training in operating engineering workstations, the Microstation computer graphics software, and RDS. Traini ...
  • Ferry Operations Feasibility Study
    Ferry Operations Feasibility Study
    Luker Jr, William A.
    1991-06-01 | PDF
    This study has attempted to evaluate the feasibility of recovering some or all of the costs incurred by the Texas Department of Transportation (TxDOT) in providing ferry service free of charge at Galveston-Port Bolivar (GPB} and Aransas Pass-Port Aransas (APPA). Because operating, maintenance, and ferry replacement costs at GPB will be more than fi ...
  • Economic Assessment of the Proposed Improvement of US Highway 287 in Wichita Falls Texas
    Economic Assessment of the Proposed Improvement of U.S. Highway 287 in Wichita Falls, Texas
    Buffington, Jesse L. ;
    Crane, Laurence M.
    1991-06-01 | PDF
    The Texas Department of Transportation's (TxDOT) District 3 personnel are in the process of evaluating the proposed improvement of U.S. Highway 287 which is located in Wichita Falls, Texas. This highway passes through Wichita Falls a few blocks from the Central Business District and is a major route to Fort Worth to the east and Amarillo to the wes ...
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