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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 29341 - 29360 of 35452 results
  • Influence of Coarse Aggregate in Portland Cement Concrete on Spalling of Concrete Pavements
    Influence of Coarse Aggregate in Portland Cement Concrete on Spalling of Concrete Pavements
    Senadheera, Sanjaya P. ;
    Zollinger, Dan G.
    1995-11-01 | PDF
    Spalling is a form of distress in concrete pavements. However, the current state of knowledge and the available prediction models on spalling indicate a lack of understanding of the spalling mechanism. This research attempts to fill the need to develop a framework to incorporate spalling in the design of concrete pavements based on a mechanistic ap ...
  • Investigation of Land Use Development and Parking Policies to Support the Use of HighOccupancy Vehicles in Texas
    Investigation of Land Use, Development, and Parking Policies to Support the Use of High-Occupancy Vehicles in Texas
    Turnbull, Katherine F. ;
    Turner, Patricia A.
    1995-11-01 | PDF
    This research study examined the factors that influence commuting behavior, the reaction of commuters to various strategies and techniques to encourage alternative commute modes, and the use of different programs by public agencies and businesses in Texas. This was accomplished through a state-of-the-art literature review; discussion groups with re ...
  • Research Concerning the Analysis of Congestion Management and Air Quality Transportation Improvement Projects
    Research Concerning the Analysis of Congestion Management and Air Quality Transportation Improvement Projects
    Crawford, Jason A. ;
    Middleton, Mark D.
    1995-11-01 | PDF
    Documented analysis procedures of travel and emission impacts of Congestion Mitigation/ Air Quality (CM/AQ) Improvement Program projects are required by the Intermodal Surface Transportation Efficiency Act (ISTEA). The Texas Department of Transportation (TxDOT) realized a need to assist Texas metropolitan planning organizations (MPOs) with their an ...
  • The Use of Compost and Shredded Brush on RightsofWay for Erosion Control Final Report
    The Use of Compost and Shredded Brush on Rights-of-Way for Erosion Control: Final Report
    Storey, Beverly B. ;
    McFalls, Jett A.
    1995-11-01 | PDF
    Highway construction practices have historically been viewed as a major contributor of non-point source pollution. Damage control measures implemented for construction site erosion can include erosion control nets, open-weave geotextiles, geosynthetic mattings, erosion control blankets, loose mulches, hydro-mulches, and chemical soil binders. The T ...
  • Improving Assignment Results for Air Quality Analyses
    Improving Assignment Results for Air Quality Analyses
    Benson, Jimmie D. ;
    Borowiec, Jeffrey D.
    1995-11-01 | PDF
    The hypothesis to be tested under this study was that improved 24-hour assignment results could be achieved by implementing time-of-day assignment procedures. The objectives of the study were: 1. To quantify the improvements in the 24-hour assignment results which can be obtained from using time-of-day modeling techniques in the development of 24-h ...
  • An Evaluation of HighOccupancy Vehicle Lanes in Texas 1994
    An Evaluation of High-Occupancy Vehicle Lanes in Texas, 1994
    Henk, Russell H. ;
    Morris, Daniel E.
    1995-11-01 | PDF
    This report evaluates the operation of freeway high-occupancy vehicle (HOV) lanes in Texas through calendar year 1994. As of the end of 1994, HOV lanes were in operation on the five following Houston freeways: 1) Katy Freeway (I-10W); 2) North Freeway (I-45N); 3) Northwest Freeway (U.S. 290); 4) Gulf Freeway (I-45S); and 5) Southwest Freeway (U.S. ...
  • Development of a Procedure for the Structural Evaluation of Superheavy Load Routes
    Development of a Procedure for the Structural Evaluation of Superheavy Load Routes
    Jooste, Fritz J. ;
    Fernando, Emmanuel G.
    1995-11-01 | PDF
    The Texas Department of Transportation (TXDOT) receives about 75 to 100 permit requests for superheavy load moves annually. Most of the moves take place in the southeast region of the state due to the proximity to the Gulf of Mexico and the presence of navigational inland waterways. Gross vehicle weights associated with these moves range from 1112 ...
  • Evaluation of Pavement Base and Subgrade Material Properties and Test Procedures
    Evaluation of Pavement Base and Subgrade Material Properties and Test Procedures
    Titus-Glover, Leslie ;
    Fernando, Emmanuel G.
    1995-11-01 | PDF
    The objective of this research was to develop simpler and less expensive procedures for characterizing the resilient properties, K1 to K3; the strength parameters, cohesion, C; and angle of internal friction of base and subgrade materials. Researchers accomplished this by developing prediction equations which use easy to obtain soil properties and ...
  • Evaluation and Improvement of Bituminous Maintenance Mixtures
    Evaluation and Improvement of Bituminous Maintenance Mixtures
    Estakhri, Cindy K. ;
    Button, Joe W.
    1995-11-01 | PDF
    The objective of this study was to provide the Texas Department of Transportation with a means to assure quality of cold-applied asphalt stabilized maintenance mixtures. Samples of 17 different maintenance mixtures were obtained from across the state and 14 of these were stockpiled at Texas A&M's Riverside Campus. These materials were evaluated in ...
  • Guidelines for Bicycle and Pedestrian Facilities FirstYear Activities
    Guidelines for Bicycle and Pedestrian Facilities: First-Year Activities
    Hauser, Danise S. ;
    Benz, Robert J.
    1995-11-01 | PDF
    This report describes the tasks conducted during the first year of a two-year study to develop guidelines for bicycle and pedestrian facilities on both existing and future roadways in Texas. The tasks were concentrated in four basic activity areas: 1) assessment of current practices; 2) collection of citizen and other agency recommendations; 3) ass ...
  • An Assessment of Sign Vandalism in the State of Texas
    An Assessment of Sign Vandalism in the State of Texas
    Mcllroy, Charles R. ;
    Picha, Dale L.
    1995-11-01 | PDF
    This report describes a research study which reviewed several sign vandalism countermeasures throughout the country and assessed the extent of sign vandalism in Texas. Countermeasures that were reviewed include hardware implementation measures and legal solutions to reduce sign vandalism and media campaign efforts that targeted specific age and int ...
  • COLORMAP Users Manual with Case Studies
    COLORMAP — User's Manual with Case Studies
    Scullion, Tom ;
    Chen, Yiqing
    1995-11-01 | PDF
    COLORMAP is a user friendly window driven software package for processing ground penetrating radar waveforms. It is intended for highway engineers who wish to obtain subsurface information from pavement structures. This report is a user manual which describes each of COLORMAP's pull down menu options. Also included is a series of case studies which ...
  • Design and Implementation of Automatic Vehicle Identification Technologies for Traffic Monitoring in Houston Texas
    Design and Implementation of Automatic Vehicle Identification Technologies for Traffic Monitoring in Houston, Texas
    Smalley, Dennis G. ;
    Hickman, Dan R.
    1995-11-01 | PDF
    This report documents the development of an Automatic Vehicle Identification (AVI) system for monitoring traffic conditions on urban freeways. The AVI system is being implemented in Houston in a stage construction program. Phase 1 covers 60 miles of urban roadways on three radial freeways. The report outlines the system design and the hardware and ...
  • MODULUS 50 Users Manual
    MODULUS 5.0: User’s Manual
    Michalak, Chester H. ;
    Scullion, Tom
    1995-11-01 | PDF
    MODULUS 5.0 is the latest version of the widely used flexible pavement back calculation system developed by the Texas Transportation Institute for the Texas DOT. This report is a User's Manual for MODULUS 5.0. The major additions to this system are routines to: 1. Estimate remaining structure life, and 2. Classify surface, base and subgrade layer s ...
  • Planning Design and Operation of Transportation Facilities in Houston Texas 1995 Summary of Activities
    Planning, Design, and Operation of Transportation Facilities in Houston, Texas: 1995 Summary of Activities
    McCasland, William R.
    1995-11-01 | PDF
    This report summarizes the activities conducted on a variety of topics for the Texas Department of Transportation (TxDOJ), Houston District. The Texas Transportation Institute (TTI) conducted the following studies on the High Occupancy Vehicle (HOV) Lanes: field studies on five HOV facilities to measure vehicle occupancies, volumes, and travel time ...
  • Texas Role as a USMexico Trade Gateway
    Texas’ Role as a U.S.-Mexico Trade Gateway
    Weissmann, Angela Jannini ;
    Harrison, Robert
    1995-11-01 | PDF
    In providing incentives for increased trade among the U.S., Canada, and Mexico, the North American Free Trade Agreement (NAFTA) could considerably liberalize freight carriage across these countries' respective borders. While Texas has a substantial economic interest in the increased trade, its strategic geographic location, as well as its 2000-km-l ...
  • Texas Pavement Management System Summary Report
    Texas Pavement Management System: Summary Report
    Dossey, T. ;
    Hudson, W. R.
    1995-11-01 | PDF
    This report, the final for Project 1908, describes the performance models for jointed concrete pavements (JCPs) this project developed for incorporation in the TxDOT Pavement Management Information System (PMIS). As indicated in the report, these models appear to be reasonable indicators of general trends within the pavement population. In addition ...
  • Comparing Ranking and Optimization Procedures for the Texas Pavement Management Information System
    Comparing Ranking and Optimization Procedures for the Texas Pavement Management Information System
    Zambrano, Felipe ;
    Scullion, Tom
    1995-11-01 | PDF
    The Pavement Management Information System currently implemented within TxDOT contains a simple single year ranking procedure for prioritization of projects and for conducting impact analysis. This report compares the performance of this ranking procedure with two multi-year optimization procedures, one that only permits a single treatment during t ...
  • Users Manual for a Pavement Video Image Processing System Final Report
    User’s Manual for a Pavement Video Image Processing System: Final Report
    Lau, Chun-Lok
    1995-11-01 | PDF
    This report provides a user's manual for the automated video distress identification system developed by TTI for the Texas Department of Transportation.
  • Potential of Telecommuting for Travel Demand Management
    Potential of Telecommuting for Travel Demand Management
    Turnbull, Katherine F. ;
    Higgins, Laura L.
    1995-11-01 | PDF
    This study examines the use of telecommuting on a national and state level. It reviews the issues commonly associated with telecommuting and the approaches employed to address these. The potential benefits of telecommuting for employers, employees, and the transportation system are outlined. Telecommuting programs in Houston, Dallas, and Austin are ...
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