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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 721 - 740 of 36104 results
  • A Statewide Geographic Information System GIS as a Predictive Tool for Locating Deeply Buried Archeological Deposits in Nebraska Phase IIIThe Sandhills Region
    A Statewide Geographic Information System (GIS) as a Predictive Tool for Locating Deeply Buried Archeological Deposits in Nebraska: Phase III-The Sandhills Region
    Layzell, Anthony L ;
    Mandel, Rolfe D.
    2024-12-23 | PDF
    This project developed a GIS to assist with the identification of deeply buried cultural deposits in alluvial settings across the Sandhills region of Nebraska. Soil survey data, previous geoarchaeological investigations, landform position, and other information was used to rank the potential of any stream valley setting as low, low-moderate, modera ...
  • Design Guidelines and Mitigation Strategies for Reducing Sedimentation of MultiBarrel Culverts
    Design Guidelines and Mitigation Strategies for Reducing Sedimentation of Multi-Barrel Culverts
    Muste, Marian
    ORCID ICON IMG
    2024-12-17 | PDF
    The accumulation of sediments at culverts is a chronic operational issue, frequently occurring at multi-barrel culverts located in erosion-prone watersheds. Sediment deposits can develop rapidly, impairing the culvert’s capacity to convey design flows and potentially leading to damage to both transportation infrastructure (e.g., road and culvert ov ...
  • Flood Assessment System for TxDOT
    Flood Assessment System for TxDOT
    Maidment, David ;
    Passalacqua, Paola
    2024-12-13 | PDF
    The National Weather Service (NWS) operates a National Water Model that continually forecasts water flow throughout the stream network of the United States, including 190,000 miles of streams divided into 100,000 stream reaches in Texas. The NWS has also deployed real-time flood inundation mapping to about half of Texas, and it will complete covera ...
  • Analyze Business Models for Implementation and Operation of a Statewide GNSS RTN [supporting dataset]
    Al-Kaisy, Ahmed ;
    Raza, Sajid
    2024-12-10 | ZIP
    The Global Navigation Satellite System (GNSS), commonly known as the global positioning system, has become one of the fastest-growing emerging technologies delivering location services to various sectors. The applications of geospatial data span every sphere of modern-day science and industry where geographical positioning matters. The list include ...
    Dataset Supporting Files
  • Evaluate the Deployment of High Strength Reinforcing Steel in Texas
    Evaluate the Deployment of High Strength Reinforcing Steel in Texas
    Yu, Yongjae ;
    Espanol, Cheska
    2024-12-01 | PDF
    This research addresses the application of high-strength reinforcing steel in Texas bridge construction. The project involved experimental and analytical work to evaluate the effectiveness of current design recommendations for high-strength reinforcing steel in various bridge structural components. These components include spliced beam, CIP-PCP dec ...
  • Significant Factors of Bridge Deterioration Final Report
    Significant Factors of Bridge Deterioration: Final Report
    Fick, Damon ;
    Bell, Mathew
    2024-12-01 | PDF
    Bridges structures deteriorate over time due to various factors. Understanding the factors that affect bridge deterioration rates is necessary for state agencies to maintain the safety and functionality of bridges during their design service life. To improve deterioration modeling in Montana, significant factors affecting bridge deterioration were ...
  • Evaluation of Benefits of Drainable Base Systems Used by MnDOT
    Evaluation of Benefits of Drainable Base Systems Used by MnDOT
    Izevbekhai, Bernard Igbafen ;
    Aydin, Ceren
    2024-12-01 | PDF
    The Minnesota Department of Transportation (MnDOT) recognizes the importance of subsurface drainage in pavements. Various studies have indicated that adequate drainage of pavement layers enhances performance of pavements in general. MnDOT thus uses various types of subsurface drainage in varying degrees of styles, frequency of use, and minor variat ...
  • Cost Effective Alternatives for Mitigating Debris and Environmental Impacts Around Bridge Piers
    Cost Effective Alternatives for Mitigating Debris and Environmental Impacts Around Bridge Piers
    Witter, Jonathan D
    ORCID ICON IMG
    2024-12-01 | PDF
    This research study addressed three key problems: 1) identifying safer, timely, and cost-effective solutions for removing accumulated debris from bridge piers, 2) designing and implementing countermeasures to prevent debris accumulation, and 3) finding technological solutions to enhance bridge inspection, scour detection, and mapping of river cross ...
  • Advancing SelfEnforcing Streets Phase 1 The Relationship Between Roadway Environment and Crash Severity
    Advancing Self-Enforcing Streets Phase 1: The Relationship Between Roadway Environment and Crash Severity
    Talebpour, Alireza ;
    Zhang, Yanlin
    2024-12-01 | PDF
    The concept of self-enforcing roadways (SER) has been proposed as a speed management strategy to achieve harmony in drivers’ speed selection and to address safety issues associated with excessive speeding. While numerous examples of SER implementation exist outside of the United States (particularly in European countries), this concept is fairly ne ...
  • HFST Review
    HFST Review
    Khan, Zafrul ;
    Bledsoe, Jay F
    2024-12-01 | PDF
    The Missouri Department of Transportation (MoDOT) has implemented High Friction Surface Treatment (HFST) in various locations across the state to reduce roadway departure crashes by improving pavement friction. To prevent premature failure and to ensure that the HFST performs adequately throughout the design life, this study evaluates the pavement ...
  • Financial Feasibility of Maglev System in Texas
    Financial Feasibility of Maglev System in Texas
    Cline, Michael E. ;
    Easton, Carla
    2024-12-01 | PDF
    A brief description of different modes possible in the proposed TransTexas Corridor (TTC) is initiated. The main modal alternatives, which include highway, high speed rail, and maglev are discussed in detail. Alternatives for financing the TTC infrastructure are discussed. A detailed financial feasibility of a maglev system along a hypothetical cor ...
  • Inspection and Maintenance Guidelines for Mechanically Stabilized Earth Walls
    Inspection and Maintenance Guidelines for Mechanically Stabilized Earth Walls
    Barry, Michelle L. ;
    Coffman, Richard A.
    2024-12-01 | PDF
    This report outlines the results of a comprehensive study focused on enhancing maintenance and inspection practices for mechanically stabilized earth (MSE) walls. The project was sponsored by the Arkansas Department of Transportation (ARDOT), and its central objectives were to formulate the best management practices for MSE wall maintenance and dev ...
  • HFST Review Summary
    HFST Review [Summary]
    Bledsoe, James ;
    Alhasan, Ahmad
    2024-12-01 | PDF
    The Missouri Department of Transportation (MoDOT) has implemented High Friction Surface Treatment (HFST) in various locations across the state to reduce roadway departure crashes by improving pavement friction. To prevent premature failure and to ensure that the HFST performs adequately throughout the design life, this study evaluates the pavement ...
  • Guidance for Incorporating Work Zone Data within Traffic Management Operations
    Guidance for Incorporating Work Zone Data within Traffic Management Operations
    Knickerbocker, Skylar ;
    Ravichandra-Mouli, Varsha
    2024-12-01 | PDF
    The ability for agencies to notify vehicles that they are approaching a work zone has the potential to reduce crashes by increasing motorists’ awareness of the conditions. A critical element of this ability involves providing accurate work zone information and reducing the potential for false alerts that motorist ignore, which can be accomplished t ...
  • Best Management Practices for Liquid Chloride Storage and Pumping Systems
    Best Management Practices for Liquid Chloride Storage and Pumping Systems
    Clouser, Karalyn ;
    Fay, Laura
    2024-12-01 | PDF
    The objective of this project was to examine and document liquid deicing storage and pump systems currently being used by departments of transportation and public works agencies across the country and best practices for managing and maintaining these systems. Using information gathered from surveys and interviews with transportation agencies and ve ...
  • Cost Effective Alternatives for Mitigating Debris and Environmental Impacts Around Bridge Piers Fact Sheet
    Cost Effective Alternatives for Mitigating Debris and Environmental Impacts Around Bridge Piers [Fact Sheet]
    Witter, Jonathan D ;
    Raudenbush, Zane
    2024-12-01 | PDF
    This research study addressed three key problems: 1) identifying safer, timely, and cost-effective solutions for removing accumulated debris from bridge piers, 2) designing and implementing countermeasures to prevent debris accumulation, and 3) finding technological solutions to enhance bridge inspection, scour detection, and mapping of river cross ...
  • Holistic Quality Management of Precast Concrete Construction for Transportation Infrastructure
    Holistic Quality Management of Precast Concrete Construction for Transportation Infrastructure
    Cai, Hubo ;
    Dunston, Phillip S.
    2024-12-01 | PDF
    Precast concrete (PC) is manufactured in a controlled environment to provide desired quality, durability and efficiency to build transportation assets that address significant infrastructure challenges faced by the nation. Quality deficiencies during any lifecycle phase can easily off set the expected benefits, leading to premature failures and exc ...
  • TITAN An Interactive Webbased Framework for Transportation Data Integration and Analytics Phase 2
    TITAN – An Interactive, Web-based Framework for Transportation Data Integration and Analytics – Phase 2
    Adu-Gyamfi, Yaw ;
    Edara, Praveen K.
    2024-12-01 | PDF
    The TITAN project, now in its second phase, is a cutting-edge, interactive web-based framework designed for the warehousing, integration, analytics, and visualization of transportation data. This phase has successfully implemented resilient and scalable database architectures, enabling rapid storage and retrieval of massive datasets, which are crit ...
  • DecisionMaking Tool
    Decision-Making Tool
    Mukhopadhyay, Anol ;
    Mistri, Abhijit
    2024-12-01 | PDF
    The primary objective of Task 6 was to develop guidelines, recommendations, and a decision- making tool based on extensive laboratory performance evaluation of the selected sealers and coatings (Task 3, Chapter 3 in the Research Report [R1]) under both normal and accelerated weathering (QUV and QFOG exposure) followed by developing a rating system ...
  • Effective Methods to Safely Communicate with Commercial Motor Vehicles
    Effective Methods to Safely Communicate with Commercial Motor Vehicles
    Edara, Praveen K. ;
    Adu-Gyamfi, Yaw
    2024-12-01 | PDF
    One critical aspect of a proactive approach to improving the safety of commercial motor vehicles (CMVs) involves how to communicate with CMV drivers safely and effectively through an electronic notification system (ENS). The objectives of this project are to: 1) conduct a review of existing ENS methods in use by CMV drivers, trucking companies, and ...
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