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rosaP Repository & Open Science Access Portal

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 561 - 580 of 36368 results
  • Sustainable Application of TDA in Stormwater Infiltration and Treatment
    Sustainable Application of TDA in Stormwater Infiltration and Treatment
    Natarajan, Poornima ;
    Gulliver, John S.
    2025-05-01 | PDF
    The objective of this research was to determine the efficacy and cost-effectiveness of the application of tire-derived aggregate (TDA) in stormwater treatment and management systems. We reaffirmed that TDA is an excellent means of retaining phosphate (soluble reactive phosphorus) in stormwater runoff. In addition, we found that biofilms grow on TDA ...
  • Assess Driver Distraction in an Era of Rapid Technological Change for Digital Advertising Billboards Technical Report
    Assess Driver Distraction in an Era of Rapid Technological Change for Digital Advertising Billboards: Technical Report
    Pike, Adam ;
    Shirinzad, Maryam
    2025-05-01 | PDF
    Outdoor advertising signs impact millions of travelers around the world every day. These signs are designed to attract driver attention, thus taking it away from the driving task. Driver inattention and distraction are two critical factors for road safety. Regulation of outdoor advertising signs must deal with changing technologies, including digit ...
  • Evaluation of Stripping Tests for Asphalt Mixtures to Replace AASHTO T283 Method in Missouri Research Summary
    Evaluation of Stripping Tests for Asphalt Mixtures to Replace AASHTO T283 Method in Missouri [Research Summary]
    Buttlar, William G.
    2025-05-01 | PDF
    Currently, many paving agencies in the U.S. including the Missouri Department of Transportation (MoDOT) use the AASHTO T283 method (Tensile Strength Ratio (TSR) test) to determine the moisture damage susceptibility of asphalt mixtures. However, the TSR test has been shown to have a poor correlation with field results based on a review of literature ...
  • Improving Safety for People Walking and Biking at Roundabouts
    Improving Safety for People Walking and Biking at Roundabouts
    Savolainen, Peter T. ;
    Gates, Tim J
    2025-05-01 | PDF
    Roundabouts have been shown to enhance safety by lowering travel speeds as compared to other intersection designs. However, pedestrian and bicyclist crossings at roundabouts present unique challenges. Low yielding rates can heighten the risk of crashes, especially at entry and exit points. This study examines driver yielding behavior toward pedestr ...
  • Avoiding and Minimizing Impacts to Aquatic Resources through Construction Design Standards
    Avoiding and Minimizing Impacts to Aquatic Resources through Construction Design Standards
    Swedberg, Dusty A ;
    Willink, Phillip W
    2025-05-01 | PDF
    The primary objective was to summarize best management practices that avoid and minimize impacts on aquatic resources through construction design standards. The study involved a literature review and discussions with experts to identify knowledge gaps regarding the effects of road and bridge construction on aquatic resources. We examined how other ...
  • Tools for Capital Improvement Planning
    Tools for Capital Improvement Planning
    Minnesota Local Road Research Board
    2025-05-01 | PDF
    This guide was developed to help Minnesota local agencies better understand and compare Capital Improvement Planning (CIP) software tools. The guide summarizes key features, functionalities, and support offerings across several CIP-related solutions, based on vendor-provided information and publicly available materials. The Technical Advisory Panel ...
  • Harnessing Solar Energy through Solar Snow Fence Implementation
    Harnessing Solar Energy through Solar Snow Fence: Implementation
    Yang, Mijia ;
    Yu, Yao
    2025-05-01 | PDF
    A 100-ft field implementation of the proposed solar snow fence was conducted In Glyndon, MN. The implementation process started with the manufacturing of solar stripe frames, U connection with steel posts, helical piling, electrical power harvest and storage, electrical use in snow melting, and monitoring of the solar snow fence systems. A 12-ft la ...
  • Stone Matrix Asphalt SMA Overlay Performance Evaluation
    Stone Matrix Asphalt (SMA) Overlay Performance Evaluation
    Lee, Jusang M ;
    Jeon, Jongmyung
    2025-05-01 | PDF
    Stone matrix asphalt (SMA) is a specialized asphalt mixture designed to improve pavement performance by combining a coarse aggregate skeleton with a high-binder content mortar. This innovative design, adopted by the Indiana Department of Transportation (INDOT) in the late 1990s, offers distinct advantages over conventional hot mix asphalt (HMA). Cu ...
  • Supplementary Cementitious Materials for Chloride Resistance of Bridge Decks
    Supplementary Cementitious Materials for Chloride Resistance of Bridge Decks
    Bordelon, Amanda C ;
    Clyde, Madison
    2025-05-01 | PDF
    The purpose of this report is to present the measured properties and comparison between concrete mixtures consisting of different available supplementary cementitious materials (SCMs) for the purpose of understanding which SCM provides the best chloride resistance for bridge decks in Utah. The concrete batches were created in the Utah Valley Univer ...
  • Asset Condition Assessment Using AI and Computer Vision
    Asset Condition Assessment Using AI and Computer Vision
    Mashhadi, Ali ;
    Black, Clancy W.
    2025-05-01 | PDF
    UDOT faces significant challenges in manually inspecting roadside safety assets across its extensive roadway network, prompting the need for automated condition assessment solutions. This project leverages street-level image data to develop an AI-driven framework for assessing primary assets (guardrails, cable barriers, concrete barriers) and secon ...
  • First Responder Interactions with Automated Vehicles An Identification of Needs and Strategies
    First Responder Interactions with Automated Vehicles: An Identification of Needs and Strategies
    Trefz, Bradley ;
    Ivie, Ray
    2025-05-01 | PDF
    The rapid deployment of automated vehicles presents both opportunities and challenges, especially for first responders tasked with ensuring public safety during emergencies. This research project, led by the Texas A&M Transportation Institute, in partnership with the Texas A&M Engineering Extension, addressed critical needs and strategies for inter ...
  • Impact of Heavy Commercial Electric Vehicles on Flexible Pavements
    Impact of Heavy Commercial Electric Vehicles on Flexible Pavements
    Jayme, Angeli ;
    Hernandez, Jaime
    2025-05-01 | PDF
    Heavy-duty electric vehicles (HDEV) pose challenges to flexible pavements. This study evaluated four Illinois pavement structures to quantify HDEV impacts on pavements. Compounding factors included increases in load and acceleration, which escalated critical strains and reduced repetitions to failure. Various distresses were considered: bottom-up c ...
  • Construction Cost Inflation Model Data Management Plan
    Construction Cost Inflation Model: Data Management Plan
    Colsch, Nick
    2025-05-01 | PDF
    Federal legislation requires state departments of transportation to consider and apply inflation to the costs of transportation projects. However, there is no guidance on how inflation should be calculated. Previous research on this topic primarily focused on developing construction cost indexes. Previous methods of prediction included neural netwo ...
  • Drainage Area Limitations of Single Watershed Peak Flow Estimates from NRCS Methods
    Drainage Area Limitations of Single Watershed, Peak Flow Estimates from NRCS Methods
    Maughan, Timothy A ;
    Hotchkiss, Rollin H.
    2025-05-01 | PDF
    Most state Department of Transportation roadway design sections predict peak flow for culvert design using, amongst other approaches, Natural Resources Conservation Service (NRCS) TR-20 technology. Even though this technology is more than 50 years old, there are no clear guidelines for how large a single watershed drainage area may be while remaini ...
  • Joint Deterioration Synthesis Project Capsule
    Joint Deterioration Synthesis [Project Capsule]
    Hungria, Ricardo
    2025-05-01 | PDF
    Concrete pavements are built with joints to accommodate for shrinkage and to induce cracking in control locations. Proper joint type selection and application are key for adequate concrete pavement performance. Nevertheless, various challenges have been identified, including joint sealant loss, loss of subgrade support, joint faulting, poor load tr ...
  • Evaluation of WrongWay Driving Countermeasures at Kansas Urban and Rural Interstate Ramps
    Evaluation of Wrong-Way Driving Countermeasures at Kansas Urban and Rural Interstate Ramps
    Cunningham IV, Jack R ;
    Anderson, Samantha
    2025-05-01 | PDF
    Wrong-way driving (WWD) incidents and crashes are a serious concern for communities throughout the United States. WWD events typically occur at high travel speeds during low light conditions on roadways with limited horizontal maneuverability. These variables reduce driver reaction times and, in conjunction with other human factor variables that ca ...
  • Improving Maintenance of OpenGraded Friction Course in Louisiana
    Improving Maintenance of Open-Graded Friction Course in Louisiana
    Mayeux, Corey R ;
    Akentuna, Moses
    2025-05-01 | PDF
    Open-Graded Friction Course (OGFC) is a specialized asphalt concrete mixture used for thin-wearing courses, offering significant safety, economic, and environmental benefits. The porous structure of OGFC enhances drainage, reduces hydroplaning, and improves road visibility, particularly during wet weather conditions. Despite its potential advantage ...
  • Transportation Operations Center Operator Retention and Workload Mitigation Strategies
    Transportation Operations Center Operator Retention and Workload Mitigation Strategies
    Goodall, Noah J.
    2025-05-01 | PDF
    This study investigated strategies to mitigate the workload for and improve the retention of operators at the Virginia Department of Transportation’s (VDOT) Transportation Operations Centers (TOCs). The research involved a literature review, interviews with other state departments of transportation, observations of VDOT TOC operations, and intervie ...
  • A Playbook For CMGC Adoption in Transportation Projects
    A Playbook For CM/GC Adoption in Transportation Projects
    Pishdad, Pardis
    2025-05-01 | PDF
    The Construction Manager/General Contractor (CM/GC) project delivery method is gaining widespread adoption in the transportation sector due to its ability to integrate construction expertise early in the project lifecycle. This report serves as a playbook for CM/GC adoption in transportation projects, specifically tailored for the Georgia Departmen ...
  • Evaluation of WrongWay Driving Countermeasures at Kansas Urban and Rural Interstate Ramps Summary
    Evaluation of Wrong-Way Driving Countermeasures at Kansas Urban and Rural Interstate Ramps [Summary]
    Cunningham IV, Jack R ;
    Anderson, Samantha
    2025-05-01 | PDF
    Wrong-way driving (WWD) incidents and crashes are a serious concern for communities throughout the United States. WWD events typically occur at high travel speeds during low light conditions on roadways with limited horizontal maneuverability. These variables reduce driver reaction times and, in conjunction with other human factor variables that ca ...
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