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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 961 - 980 of 36841 results
  • Bridge Pile Repair Using Underwater Fiberglass Reinforced Plastic FRP Jacket and Steel Reinforced Grout
    Bridge Pile Repair Using Underwater Fiberglass Reinforced Plastic (FRP) Jacket and Steel Reinforced Grout
    Schilling, William ;
    Rieckman, Brandon
    2025-02-01 | PDF
    This study explored the feasibility and acceptability of using stay in-place fiberglass reinforced plastic (FRP) jackets and underwater steel reinforced grout for timely bridge piling repairs in Minnesota without dewatering. One of the goals of the project was to determine the current state of practice to this corrosion repair and inspection by res ...
  • A Roadmap for Missouri Assessing Needs an Implementation Framework for Incorporating Environmental Product Declarations
    A Roadmap for Missouri: Assessing Needs an Implementation Framework for Incorporating Environmental Product Declarations
    Kevern, John T. ;
    Buttlar, William G.
    2025-02-01 | PDF
    This report details the Missouri Department of Transportation’s activities within the Federal Highway Administration’s Climate Challenge program. The purpose of the program was three-fold, 1) to increase knowledge of environmental product declarations (EPDs) within the Missouri asphalt and concrete industry, 2) to assess the current state of Missou ...
  • Effectiveness of Short Solid Barriers to Reduce Noise Generated by Different Types of Highway Vehicles Research Summary
    Effectiveness of Short Solid Barriers to Reduce Noise Generated by Different Types of Highway Vehicles [Research Summary]
    Owolabi, Oludare
    2025-02-01 | PDF
    The purpose of this study was to determine how well short concrete barriers work to reduce noise from passing cars. The goal was to give the State Highway Administration (SHA) information so they could determine if these barriers could be utilized to reduce traffic noise.
  • Development of a Traffic Management Decision Support Tool for Freeway Incident Traffic Management FITM Plan Deployment Phase 3 An Incident Duration and Impact Prediction IDIP System Research Summary
    Development of a Traffic Management Decision Support Tool for Freeway Incident Traffic Management (FITM) Plan Deployment Phase 3: An Incident Duration and Impact Prediction (IDIP) System [Research Summary]
    Chang, Gang-Len
    2025-02-01 | PDF
    The primary goal of this study is to finalize the IDIP system’s development so that CHART can reliably project the impacts of a detected incident, from detection to clearance, on its target freeway and neighboring local networks. With all essential functions developed in this phase for IDIP, CHART’s incident response team can conveniently estimate ...
  • Consultant Support for Intelligent Compaction and PaverMounted Thermal Profiling Projects in 20242025
    Consultant Support for Intelligent Compaction and Paver-Mounted Thermal Profiling Projects in 2024-2025
    Chang, George K ;
    Gilliland, Amanda
    2025-02-01 | PDF
    The 2024 MoDOT IC-PMTP Annual Report highlights achievements and challenges in implementing Intelligent Compaction (IC) and Paver-Mounted Thermal Profiling (PMTP) technologies. Key updates included aligning data validation tools with updated PMTP specifications and addressing challenges such as contractor’s paving boundary data manipulation and dat ...
  • Central Dakota 2025 Base Travel Demand Model Development and Calibration
    Central Dakota 2025 Base Travel Demand Model Development and Calibration
    Motuba, Diomo
    2025-02-01 | PDF
    The Central Dakota MPO, which includes the cities of Minot, Surrey, and Burlington, has been developing a Travel Demand Model (TDM) to incorporate new data, reflect current travel patterns, and integrate advancements in transportation modeling techniques. The updated model is based on 2024 data, ensuring that it accurately represents the region's t ...
  • Combining InSitu and Remote SensingBased Monitoring Methods to Improve the Efficiency and Accuracy of Landslide Monitoring Activities
    Combining In-Situ and Remote Sensing-Based Monitoring Methods to Improve the Efficiency and Accuracy of Landslide Monitoring Activities
    Delparte, Donna M. ;
    Mahar, James
    2025-02-01 | PDF
    Repeat LiDAR or photogrammetry surveys for conducting temporal and spatial studies of mass movements are an emerging part of landslide hazard monitoring research, including the use of sensors aboard small Unmanned Aircraft Systems (UAS). The ability to measure change at a site over time can be an important asset in identifying slopes that pose a si ...
  • iBM An Intelligent Bridge Management Tool for Bridge and Culvert Deterioration Forecasting and Anomaly Detection Based on PhysicsGuided Deep Learning
    i-BM: An Intelligent Bridge Management Tool for Bridge and Culvert Deterioration Forecasting and Anomaly Detection Based on Physics-Guided Deep Learning
    Banaei-Kashani, Farnoush ;
    Rens, Kevin
    2025-02-01 | PDF
    Bridges and culverts deteriorate with time and use. The deterioration process is affected by several factors, such as structural materials, structural design and behavior, daily traffic, freeze and thaw cycles, climate, pollution, temperature variation. After a certain period of time has elapsed, the deterioration processes accelerate and in a rela ...
  • iBM Bridge Management Tool Brief
    i-BM: Bridge Management Tool [Brief]
    Banaei-Kashani, Farnoush ;
    Rens, Kevin
    2025-02-01 | PDF
    Bridges and culverts deteriorate with time and use. While in the past, various data-driven deterioration models, including Bayesian models, probit model, and Markov chains are proposed in the literature to model bridge deterioration, these models either suffer from low accuracy or are too complex to be applicable. Recently deep learning (DL) AI mod ...
  • Nevada DOT North Dakota DOT and Utah DOT 2024 Research Peer Exchange
    Nevada DOT, North Dakota DOT, and Utah DOT 2024 Research Peer Exchange
    Seeber, Kirsten ;
    Hirt, Brian
    2025-02-01 | PDF
    Nevada Department of Transportation, North Dakota Department of Transportation and Utah Department of Transportation, in collaboration with the Western Transportation Research Consortium (WTRC), hosted a peer exchange on November 19 and 20, 2024, in Salt Lake City, Utah. The publication of this report fulfills the agencies' obligations to conduct a ...
  • Examination of Lighting Practices at Crosswalks
    Examination of Lighting Practices at Crosswalks
    Van Houten, Ron ;
    Kwigizile, Valerian
    2025-01-31 | PDF
    Following a review of the lighting literature and new lighting products, this study examined the lighting level at the location of night fatal and incapacitating (K&A) pedestrian crashes over a 5-year period in SW & SE Michigan. Not surprisingly, the results revealed that almost all the night pedestrian crashes coded on police reports as occurring ...
  • Survey Causes of Transit Operator Shortages
    Survey: Causes of Transit Operator Shortages
    Reeb, Tyler ;
    Reuter, James
    2025-01-31 | PDF
    Transit agencies across the State of California struggle with the recruitment and retention of a sufficient transit operator workforce. This shortage is intensified by current and anticipated retirements among the transit operator workforce, as well as state laws and policy initiatives that require a well-trained and compliant transit operator work ...
  • Assessment and Shear Strengthening of Existing CastinPlace and Precast Concrete Bridge Girders
    Assessment and Shear Strengthening of Existing Cast-in-Place and Precast Concrete Bridge Girders
    Grayson-Wallace, Brendan ;
    Aljasar, Ahmed
    2025-01-21 | PDF
    This research study investigated the feasibility of two shear-strengthening techniques to assess their effectiveness in enhancing the shear capacity of existing reinforced concrete girder bridges. The first scheme consisted of using Near-Surface-Mounted (NSM) bars while the second scheme comprised Partially Embedded Bars (PEB) in the web of the gir ...
  • Quantifying the Benefits of Roadside Vegetation
    Quantifying the Benefits of Roadside Vegetation
    Ryu, Kyoeng Rok ;
    Im, Joowon
    2025-01-15 | PDF
    Transportation agencies and state DOTs have established roadside vegetation programs to enhance sustainability, quality of life, and the aesthetics of the transportation systems. However, a comprehensive toolkit to quantify the benefits and risks of various roadside vegetation types and applications has been largely lacking across the nation, inclu ...
  • 07162 Quantifying the Benefits of Roadside Vegetation
    0-7162: Quantifying the Benefits of Roadside Vegetation
    Ryu, Kyoeng Rok
    2025-01-15 | PDF
    Transportation agencies and state DOTs have established roadside vegetation programs to enhance sustainability, quality of life, and the aesthetics of the transportation systems. However, a comprehensive toolkit to quantify the benefits and risks of various roadside vegetation types and applications has been largely lacking across the nation, inclu ...
  • Chemical Incident Reports Events Reported to the CSB Under the Accidental Release Reporting Rule Volume 1
    Chemical Incident Reports: Events Reported to the CSB Under the Accidental Release Reporting Rule [Volume 1]
    U.S. Chemical Safety and Hazard Investigation Board
    2025-01-14 | PDF
    The U.S. Chemical Safety and Hazard Investigation Board has released a compilation of summaries of chemical accidents that have occurred since the agency’s accidental release reporting rule went into effect in March 2020. The compilation presents summaries and probable causes of 26 incidents in chronological order, beginning with the release of hyd ...
  • Drive MN Summary
    Drive MN [Summary]
    Minnesota. Department of Transportation
    2025-01-09 | PDF
    Automated vehicles (AVs) rely heavily on roadway infrastructure to function. This project used technology-equipped research vehicles to drive over 1,000 miles of Minnesota roadways to gain a better understanding of potential infrastructure issues that would inhibit the operations of AVs. The outcomes of this project were intended to be used by tran ...
  • Precast Bridge Deck Panel Joint Testing
    Precast Bridge Deck Panel Joint Testing
    Mante, David M. ;
    Helm, Jeffrey
    2025-01-02 | PDF
    This project investigated the effect of various experimental parameters on the static flexural capacity of longitudinal joints in Commonwealth of Pennsylvania precast concrete bridge deck panel systems. The laboratory component of this study included fifteen full-scale static flexural tests of laboratory-assembled precast concrete deck systems that ...
  • An Innovative Practical Approach to Assessing Bitumen Compatibility as A Means of Material Specification
    An Innovative Practical Approach to Assessing Bitumen Compatibility as A Means of Material Specification
    Dave, Eshan V. ;
    Sias, Jo E
    2025-01-01 | PDF
    Modern asphalt mixtures are usually a combination of various materials from different sources, including reclaimed asphalt pavement (RAP) and recycling agents (RAs), and are used to attain sustainable growth. However, the lack of a well-established method for determining compatibility between various sources and types of virgin binder, aged binder ...
  • Monitoring of a SteelReinforced MSE Abutment Wall and Evaluation of its Bearing Capacity Based on the CPT and DCPT
    Monitoring of a Steel-Reinforced MSE Abutment Wall and Evaluation of its Bearing Capacity Based on the CPT and DCPT
    Sakleshpur, Venkata Abhishek ;
    Prezzi, Monica
    2025-01-01 | PDF
    A two-span bridge, supported by steel H-piles and mechanically stabilized earth (MSE) bridge abutments, was constructed as part of a new interchange on I-65 in Whitestown, Indiana. The east and west MSE abutment walls consisted of precast concrete facing panels, ribbed steel strips, and coarse-grained backfill soil. A section near the middle of the ...
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