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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 1 - 20 of 36873 results
  • Synthesis of Capabilities Opportunities and Research Needs in UAS Technology for HighPrecision Bridge Inspection
    Synthesis of Capabilities, Opportunities, and Research Needs in UAS Technology for High-Precision Bridge Inspection
    Zhao, Yuxiang ;
    Golparvar-Fard, Mani
    2026-09-01 | PDF
    This report evaluates the potential role of camera-equipped unmanned aerial systems (UAS) as well as other forms of reality-mapping solutions in supporting bridge inspection practices for the Illinois Department of Transportation (IDOT). Traditional bridge inspections can require substantial labor, specialized access equipment, traffic control, and ...
  • A Programmatic ESA Consultation Framework for Bridge Construction and Maintenance in Illinois
    A Programmatic ESA Consultation Framework for Bridge Construction and Maintenance in Illinois
    Salas, Dan ;
    Petraitis, Megan
    2026-09-01 | PDF
    Transportation agencies are required to comply with Endangered Species Act (ESA) Section 7 obligations for bridge and highway projects that intersect aquatic and floodplain habitats supporting federally listed species. In Illinois, bridge construction, replacement, maintenance, and repair activities frequently overlap with the ranges of federally l ...
  • Remote Observation Over Time Drone in a Box Phase 1
    Remote Observation Over Time (Drone in a Box) - Phase 1
    Crowley, Jeremy
    ORCID ICON IMG
    2026-09-01 | PDF
    The Montana Department of Transportation (MDT) and the Autonomous Aerial Systems Office (AASO) at the University of Montana conducted a study evaluating the use of a drone in a box (DiaB) to evaluate natural disasters. Geographic Information System (GIS) was used to identify areas with high potential for natural disasters. A market survey was condu ...
  • Exploration of Technical Developments and Data Sources That May Have Implications for LongRange Transport Planning in Virginia
    Exploration of Technical Developments and Data Sources That May Have Implications for Long-Range Transport Planning in Virginia
    Gillespie, James S. ;
    Moruza, Audrey K.
    2026-09-01 | PDF
    VTrans is the Commonwealth of Virginia's statewide multimodal transportation plan. Virginia's Office of Intermodal Planning and Investment maintains the plan under the supervision of the state's Commonwealth Transportation Board. The plan's methodology uses several VTrans "trend trackers" that are quantifiable metrics updated annually; "macrotrends ...
  • Report 27R06 Exploration of Technical Developments and Data Sources That May Have Implications for Long Range Transport Planning in Virginia Research Project Brief
    Report 27-R06: Exploration of Technical Developments and Data Sources That May Have Implications for Long Range Transport Planning in Virginia [Research Project Brief]
    Gillespie, James S. ;
    Moruza, Audrey K.
    2026-09-01 | PDF
    The research reported herein supported the Office of Intermodal Planning and Investment's mission through three tasks related to these trackers, macrotrends, and objectives: (1) compile statistical series, historical values, and future forecasts to represent seven trend trackers in the VTrans framework; (2) estimate the differences between forecast ...
  • Predicting Highway Friction on an Annual Basis on Texas Network
    Predicting Highway Friction on an Annual Basis on Texas Network
    Sabillon-Orellana, Christian ;
    Inoue, Danilo
    2026-09-01 | PDF
    The research project developed a network-level model to predict highway friction at the network level on an annual basis. By analyzing pavement texture data and employing advanced artificial intelligence and machine learning techniques, the study established a quantifiable relationship between surface texture characteristics and friction. Extensive ...
  • LongTerm Maintenance Needs and Costs of GreenColored Pavement Markings and Flexible Post Delineators Research Project Brief
    Long-Term Maintenance Needs and Costs of Green-Colored Pavement Markings and Flexible Post Delineators [Research Project Brief]
    Brown, Janna I. ;
    Ohlms, Peter B.
    2026-09-01 | PDF
    This study aimed to determine the costs, frequency, and necessary labor and equipment for maintaining two elements of bicycle and pedestrian infrastructure within Virginia: GCPMs and flexposts. The scope included various contexts (i.e., large metropolitan, small metropolitan, and rural areas). Flexpost applications for channelizing motor vehicle tr ...
  • LongTerm Maintenance Needs and Costs of GreenColored Pavement Markings and Flexible Post Delineators
    Long-Term Maintenance Needs and Costs of Green-Colored Pavement Markings and Flexible Post Delineators
    Brown, Janna I. ;
    Ohlms, Peter B.
    2026-09-01 | PDF
    In recent years, Virginia localities have expressed interest in installing two specific bicycle infrastructure elements: green-colored pavement markings (GCPMs) on bicycle facilities and flexible post delineators (referred to as flexposts) along separated bike lanes to improve conspicuity and safety. In some cases, these elements were pursued as pa ...
  • Concrete Strength Sensing Using REBEL Sensors
    Concrete Strength Sensing Using REBEL Sensors
    Hossain, Mohammad I. ;
    Soltani, Matthew
    2026-09-01 | PDF
    This study evaluated the use of Resonance-Based Embedded Layer (REBEL) sensors as a nondestructive technology for real-time monitoring of in-place concrete strength in transportation infrastructure. The objective was to assess the accuracy, reliability, and field applicability of REBEL sensors relative to conventional laboratory testing methods use ...
  • Enhancement of Traffic Control Tool for Reopening of Flooded Roadways
    Enhancement of Traffic Control Tool for Reopening of Flooded Roadways
    Preciado, Jaime ;
    Ali, Fahad
    2026-09-01 | PDF
    Flooding can temporarily reduce the structural capacity of flexible pavement due to increased moisture in the unbound pavement layers including the embankment, which may accelerate fatigue cracking and rutting when traffic is restored before the pavement has sufficiently recovered. The Florida Department of Transportation (FDOT) has previously deve ...
  • Incorporating Resilience Considerations in Transportation Asset Management Planning and Project Selection Process
    Incorporating Resilience Considerations in Transportation Asset Management Planning and Project Selection Process
    Yu, Jinzhu ;
    Mattingly, Stephen
    2026-09-01 | PDF
    This research develops and demonstrates a resilience-based transportation asset management (TAM) framework for the Texas Department of Transportation (TxDOT) to incorporate resilience into asset assessment and project screening. The study (i) reviewed current TAM and resilience practices, (ii) assessed climate-related vulnerability for bridges and ...
  • Assess Approaches to Training and Developing Hydrology and Hydraulics HH Staff in Transportation Agencies
    Assess Approaches to Training and Developing Hydrology and Hydraulics (H&H) Staff in Transportation Agencies
    Johnson, Blair ;
    Sela, Lina
    2026-09-01 | PDF
    There is presently significant understaffing and turnover of staff specializing in Hydrology and Hydraulics (H&H) within agencies overseeing transportation infrastructure. To gain an understanding of the present state of knowledge and training among H&H staff across the transportation industry, surveys were carried out to evaluate the effectiveness ...
  • Implementing the ATSPMintheLoop Simulation Solution With the TxDOT Statewide ATSPM System Deployment Plan
    Implementing the ATSPM-in-the-Loop Simulation Solution With the TxDOT Statewide ATSPM System Deployment Plan
    Li, Pengfei (Taylor) ;
    Mattingly, Stephen P.
    2026-09-01 | PDF
    The research team developed step-by-step installation and troubleshooting guidelines for the Utah Department of Transportation Automated Traffic Signal Performance Measures (ATSPM) system (v4.3) and the UTA-In-Motion platform. Both systems were packaged into a single Docker image, reducing installation time from about 20 hours to 1 hour while elimi ...
  • Monitoring of Urban Roadway Safety Hazards From Existing BusBased Video Imagery Phase 3
    Monitoring of Urban Roadway Safety Hazards From Existing Bus-Based Video Imagery: Phase 3
    Mishalani, Rabi G. ;
    McCord, Mark R.
    2026-08-31 | PDF
    Roadway traffic safety engineers consider crash data to identify locations and times of high hazard risk. While these data and the resulting identifications are valuable, they do not allow for capturing other locations and times prone to hazards where crashes have not occurred yet. Therefore, capturing conditions associated with safety hazards is e ...
  • Incorporating Resilience Considerations in Transportation Asset Management Planning and Project Selection Process Project Summary Report
    Incorporating Resilience Considerations in Transportation Asset Management Planning and Project Selection Process [Project Summary Report]
    Yu, Jinzhu ;
    Mattingly, Stephen
    2026-08-31 | PDF
    Texas transportation infrastructure is exposed to a wide range of hazards, including extreme heat, winter storms, inland flooding, and drought. The effects of these hazards vary substantially across the state and across different types of transportation assets, including roadways, pavements, bridges, culverts, and retaining walls. Transportation As ...
  • Implementing the ATSPMintheLoop Simulation Solution With the TxDOT Statewide ATSPM System Deployment Plan Project Summary Report
    Implementing the ATSPM-in-the-Loop Simulation Solution With the TxDOT Statewide ATSPM System Deployment Plan [Project Summary Report]
    Li, Taylor ;
    Mattingly, Stephen
    2026-08-31 | PDF
    The research team from The University of Texas at Arlington completed a comprehensive set of software, simulation, controller integration, and deployment tasks to convert the earlier ATSPM in-the-loop concept into a practical implementation framework. • Documented the installation and configuration of UDOT ATSPM and UTA-In-Motion (UTAIM), including ...
  • Assess Approaches to Training and Developing Hydrology and Hydraulics HH Staff in Transportation Agencies Project Summary Report
    Assess Approaches to Training and Developing Hydrology and Hydraulics (H&H) Staff in Transportation Agencies [Project Summary Report]
    Johnson, Blair ;
    Sela, Lina
    2026-08-31 | PDF
    The research team conducted a survey of H&H staff who work in the transportation industry. Development of the survey was led by the research team with the support of a small team of H&H staff within TxDOT, in order to ensure the questions appropriately encompassed the variety of training practices encountered by staff to adequately evaluate the tra ...
  • Simulating Current and Future EV Growth Scenarios in Indiana
    Simulating Current and Future EV Growth Scenarios in Indiana
    Hamim, Omar Faruqe ;
    Chen, Xiaowei
    2026-08-07 | PDF
    As Indiana transitions toward electric mobility, data-driven planning is essential to guide electric vehicle (EV) charging infrastructure investment and deployment. This study evaluates the current and future performance of Indiana's EV charging infrastructure using Multimodal Energy-Efficient Trip Simulation in Real Time (METS-R), a high-resolutio ...
  • Develop Methods to Reduce Crashes and Increase Driver Compliance in Work Zones
    Develop Methods to Reduce Crashes and Increase Driver Compliance in Work Zones
    Alluri, Priyanka ;
    Shita, Hellen
    2026-08-01 | PDF
    Work zones are vital for any infrastructure development and maintenance; however, their presence poses risks to motorists, workers, and other road users. This research analyzed work zone data, crash data, and roadway characteristics data to determine factors influencing work zone crash occurrence, injury severity, and driver compliance on South Dak ...
  • Report 27R05 Local Calibration of AASHTOWare Pavement ME Design Coefficients for VDOTs Upgrade to WebBased Software for New Pavement Design Research Project Brief
    Report 27-R05: Local Calibration of AASHTOWare Pavement ME Design Coefficients for VDOT's Upgrade to Web-Based Software for New Pavement Design [Research Project Brief]
    Turochy, Elizabeth ;
    Ahmed, Mesbah
    2026-08-01 | PDF
    Research Objectives: •Develop updated local calibration coefficients for the distress transfer functions in the AASHTOWare Pavement ME web-based platform (version 3) that best represent observed pavement performance across VDOT's network. •Provide data that supports VDOT's transition from the desktop to the web-based Pavement ME software. •Generate ...
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