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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 30541 - 30560 of 35440 results
  • Methodology for Assessing Feasibility of Bottleneck Removal
    Methodology for Assessing Feasibility of Bottleneck Removal
    Walters, Carol H. ;
    Poe, Christopher M.
    1992-11-01 | PDF
    Congestion on urban freeways impacts safety, motorist delay, air quality, and energy consumption. In areas where travel demand far exceeds capacity, some level of congestion will be inevitable. However, where imbalances in the freeway system exist, bottlenecks restrict the use of available capacity. Valuable capacity can be recaptured, congestion r ...
  • Evaluation of Financing Alternatives for Texas Transportation
    Evaluation of Financing Alternatives for Texas Transportation
    Isser, Steven ;
    Ballouz, Nicole
    1992-11-01 | PDF
    This report surveys different types of financing alternatives for highway and aviation expenditures. Included among the taxes and fees reviewed are motor fuel taxes, license and registration fees, weight distance taxes, congestion taxes, assessments and impact fees, parking fees, and private donations. Criteria for evaluating different taxes were s ...
  • Evaluation of Upgrade to Standards Requirements for FM Highways in Texas
    Evaluation of Upgrade to Standards Requirements for FM Highways in Texas
    Memmott, Jeffery L. ;
    Hanks, Jr. James W
    1992-11-01 | PDF
    This report covers an evaluation of the upgrade to standards requirements for FM highways in Texas. The objectives of the study were to determine the additional costs of upgrade to standards requirements as part of the TxDOT Rehabilitation Program, develop alternative strategies and policies to reduce those adverse impacts, and evaluate the cost-ef ...
  • Cement Coating Marginal Aggregates for Use in Asphalt Pavements
    Cement Coating Marginal Aggregates for Use in Asphalt Pavements
    Button, Joe W. ;
    Jagadam, Vidyasagar
    1992-11-01 | PDF
    Laboratory experiments were conducted to determine the feasibility and effects of applying a coating of portland cement paste to marginal aggregates and curing prior to use in hot mixed asphalt concrete. Aggregates ranging in size from fine sand to one-inch rock were separately coated with cement, cured, and then blended to produce the desired mixt ...
  • Implementation of an Equilibrium Capacity Restraint Model in the Texas Large Network Assignment Package
    Implementation of an Equilibrium Capacity Restraint Model in the Texas Large Network Assignment Package
    Benson, Jimmie D. ;
    Dresser, George B.
    1992-11-01 | PDF
    One of the major objectives of Study 2-10-89-1153 has been to improve the accuracy of the assignment models implemented in the Texas Travel Demand Package. Three areas for improvements of the Texas capacity restraint model were identified: improved techniques for estimating iteration weights using an equilibrium approach; user-supplied impedance ad ...
  • A Comparative Analysis of Two Capacity Restraint Assignment Models Used in Texas
    A Comparative Analysis of Two Capacity Restraint Assignment Models Used in Texas
    Benson, Jimmie D. ;
    Dresser, George B.
    1992-11-01 | PDF
    As part of the investigation to improve the assignment models, a comparative analysis of the Texas Capacity Restraint Procedure and the Joint Model Capacity Restraint Procedure was undertaken. The basic goal of these analyses was to attempt to objectively compare the two procedures, evaluate how the results of the two procedures differ, and identif ...
  • Natural Diversion at Temporary Work Zone Lane Closures on Urban Freeways in Texas
    Natural Diversion at Temporary Work Zone Lane Closures on Urban Freeways in Texas
    Ullman, Gerald L.
    1992-11-01 | PDF
    This report documents the results of eleven field studies at temporary work zone lane closures on urban freeways in Texas. Traffic volume and travel time data were collected at each site on days when the lane closures were implemented at each site, and compared to data collected during the same time periods on similar days without a closure present ...
  • Prototype Needs Estimating and Project Ranking Software for the TxDOT PMS
    Prototype Needs Estimating and Project Ranking Software for the TxDOT PMS
    Scullion, T. ;
    Michalak, Chester H.
    1992-11-01 | PDF
    This report describes the analytical procedures for a) estimating maintenance and rehabilitation needs b) prioritizing projects and c) evaluating the consequences of various funding levels on the Texas highway network. A prototype microcomputer software package has been built incorporating the procedure. It is envisioned that this procedure will fo ...
  • Installation of Sites for Automatic Vehicle Classification
    Installation of Sites for Automatic Vehicle Classification
    Majdi, Said O ;
    Middleton, Dan
    1992-11-01 | PDF
    Successful implementation of both the FHWA Traffic Monitoring Guide and the SHRP Long Term Pavement Performance traffic monitoring effort depended upon reliable, durable, and economically feasible axle sensors, and the creation of efficient, cost-effective, and technically sound procedures for installing the Automatic Vehicle Classification System. ...
  • Development of an End Treatment for a LowProfile Concrete Barrier
    Development of an End Treatment for a Low-Profile Concrete Barrier
    Beason, W. Lynn
    1992-11-01 | PDF
    An end treatment was developed in this project for a previously developed low-profile portable concrete median barrier. Together, the new end treatment and the low-profile barrier provide a new barrier system for use' in low-speed (45 mph [73 km/h] or less) work zones. The end of the new end treatment has a minimum height of 4 in. (10.2 cm) which t ...
  • Rubber modified concrete METRO RUMAC Evaluation N Marine Drive in Portland Oregon SE Stark Street in Gresham Oregon construction report
    Rubber modified concrete (METRO RUMAC) Evaluation : N. Marine Drive in Portland, Oregon , S.E. Stark Street in Gresham, Oregon : construction report.
    Miller, Bo
    1992-11-01 | PDF
    This report covers the construction in 1991 of two test pavements using asphalt modified crumb rubber form scrap tires. The pavements are on arterial roadways in the Portland, Oregon metropolitan area.Both test pavements use a dense-graded rubber modified asphalt concrete (METRO RUMAC) developed for the Metropolitan Service District (METRO) of the ...
  • Effect of TCAS Interrogations on the Chicago OHare ATCRBS System
    Effect of TCAS Interrogations on the Chicago O'Hare ATCRBS System
    Wapelhorst, Leo ;
    Pagano, Thomas
    1992-11-01 | PDF
    This report documents the Federal Aviation Administration (FAA) data collection and analysis effort to investigate Secondary Surveillance Radar (SSR) problems encountered at the Chicago O'Hare Terminal Approach Control (TRACON) facility. The FAA has mandated the implementation of Traffic Alert and Collision Avoidance System (TCAS) II to the entire ...
  • Technical Operating Procedures for State Access Under the Oil Pollution Act of 1990
    Technical Operating Procedures for State Access Under the Oil Pollution Act of 1990
    National Pollution Funds Center (U.S.)
    1992-11-01 | PDF
    Technical Operating Procedures (TOPs) to be used by the National Pollution Funds Center (NPFC) to provide guidance to Federal On-Scene Coordinators (FOSCs) and Coast Guard Districts concerning a State Governor's request for access to the Oil Spill Liability Trust Fund (FUND) under section 1012 (d) (1) of the Oil Pollution Act of 1990 (OPA90) (P.L. ...
  • Pullout testing facility for geosynthetics
    Pull-out testing facility for geosynthetics.
    Farrag, Khalid ;
    Juran, Ilan
    1992-11-01 | PDF
    The considerable increase in using geosynthetics in soil reinforcement made it necessary to develop methods of measuring the interaction properties and modeling load transfer in reinforced-soil structures. The large number of factors that influence the interaction mechanism makes it difficult to standardize the equipment design, testing methodology ...
  • Research needs and evaluation of air pollution problems associated with vehicular emissions summary of final report
    Research needs and evaluation of air pollution problems associated with vehicular emissions : summary of final report.
    Roy, D. ;
    Adrian, D. D.
    1992-11-01 | PDF
    The objective of this investigation is to determine if there is currently an adequate organization of technical and scientific knowledge to accurately estimate the impact of mobile sources on urban air quality. Engineering problems related to vehicular emissions, transportation control measures, smog formation, and mathematical models are identifie ...
  • Comparison of Performance on the Shipley Institute of Living Scale Air Traffic Control Specialist Selection Test and FAA Academy Screen
    Comparison of Performance on the Shipley Institute of Living Scale, Air Traffic Control Specialist Selection Test, and FAA Academy Screen
    Della Rocco, P. S. ;
    Milburn, N.
    1992-11-01 | PDF
    This study was conducted to establish norms for ATCS personnel on a group test of intellectual functioning, the Shipley Institute of Living Scale (SILS), to screen subjects for future research on the effects of Air Traffic Control Specialist (ATCS) related stressors on complex task performance. The SILS provides both verbal (Vocabulary) and cogniti ...
  • En Route Air Traffic Controllers Use of Flight Progress Strips A GraphTheoretic Analysis
    En Route Air Traffic Controllers’ Use of Flight Progress Strips: A Graph-Theoretic Analysis
    Vortac, O.U. ;
    Edwards, Mark B.
    1992-11-01 | PDF
    In the United States, flight data are represented on a paper Flight Progress Strip (FPS). The role of the FPS has recently attracted attention because of plans to automate this aspect of air traffic control. The communication activities and FPS activities of air traffic controllers were categorized while they controlled air traffic of varying compl ...
  • Buildings For Storage and Maintenance Of Airport Snow And Ice Control Equipment And Materials
    Buildings For Storage and Maintenance Of Airport Snow And Ice Control Equipment And Materials
    United States. Department of Transportation. Federal Aviation Administration
    1992-10-15 | PDF
    This advisory circular (AC) provides guidance for the site selection, design, and construction of buildings used to store and maintain airport snow and ice control equipment and materials.
  • Control of Parts Shipped Prior to Type Certificate Issuance
    Control of Parts Shipped Prior to Type Certificate Issuance
    United States. Federal Aviation Administration
    1992-10-14 | PDF
    This advisory circular provides information and guidance concerning the control of parts proposed to be shipped by manufacturers with an approved production inspection system (APIS) or production certificate (PC) (production approvalholders) in advance of type certification of a new aircraft, aircraft engine, or propeller (product).
  • Congestion information surveillance system
    Congestion information surveillance system
    1992-10-14 | PDF
    This document advances a proposal to implement a Congestion Information Surveillance System (CISS)for the Albuquerque metropolitan area. The CISS will offer agencies in the region responsible for transportation and air quality management a new capability to monitor traffic and air quality conditions. Simplistically stated, the projectis to utilize ...
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