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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 1581 - 1600 of 35452 results
  • Evaluating Wildlife Use of the South Jackson Project Highway Crossing Structures Project Phase I
    Evaluating Wildlife Use of the South Jackson Project Highway Crossing Structures: Project Phase I
    Specht, Hannah ;
    Millspaugh, Joshua J
    2023-08-01 | PDF
    Roadways have the potential to negatively impact wildlife populations directly through vehicle collision mortality and indirectly through habitat fragmentation. The Wyoming Department of Transportation installed wildlife crossing structures and wildlife on US 89 between along a 3.6 mile stretch between Jackson and Hoback Junction to mitigate these ...
  • Synthesis Develop Guidance for Local Government Building Codes for Bridges
    Synthesis: Develop Guidance for Local Government Building Codes for Bridges
    Shahandashti, Mohsen ;
    Chao, Shih-Ho (Simon)
    2023-08-01 | PDF
    The design, construction, and maintenance of off-system bridges vary across local governments (cities and counties), often resulting in inferior performance compared to bridges managed by state highway agencies. Limited knowledge of local government practices hinders understanding of the factors contributing to these deficiencies and poses challeng ...
  • TRACtion Transformative Transportation Working Groups Synthesis
    TRACtion: Transformative Transportation Working Groups Synthesis
    University of California, Los Angeles. Institute of Transportation Studies
    2023-08-01 | PDF
    TRACtion: Transformative Research and Collaboration is a new approach to community–researcher collaboration that seeks to match the University’s academic expertise with the wisdom and perspectives of community groups and advocacy organizations. It is a partnership between the Sustainable LA Grand Challenge (SLAGC) and UCLA Institute of Transportati ...
  • Evaluation of the Asphalt Mixture Design Framework for Airfield Pavements in Illinois
    Evaluation of the Asphalt Mixture Design Framework for Airfield Pavements in Illinois
    Sulaiman, Abdulgafar O ;
    Ali, Uthman Mohamed
    2023-08-01 | PDF
    The Federal Aviation Administration (FAA) advisory circular AC 150/5100-13 authorized the use of state highway material specifications at nonprimary public-use airports serving aircraft less than 60,000 pounds gross weight. This approval is based on the condition that the safety and life span of these airports will not be adversely affected. The us ...
  • Intelligent Transportation Systems Security Control Set Template and Instructions
    Intelligent Transportation Systems Security Control Set Template and Instructions
    Gabel, Randy ;
    Sames, Christina
    2023-07-31 | PDF
    This document is a template and instructions for developing control sets for ITS physical objects (systems and devices) as defined in Architecture Reference for Cooperative and Intelligent Transportation (ARC-IT). The control sets can be provided to developers and can be used to identify requirements for developing and assessing physical objects. T ...
  • Working With Autonomous Trucks To Improve Routine Maintenance Operations Research Brief
    Working With Autonomous Trucks To Improve Routine Maintenance Operations [Research Brief]
    Chin, Kristie ;
    Gold, Andrea
    2023-07-31 | PDF
    The aim of Project 0-7129 was to demonstrate that AV trucking data can be effectively ingested and reported to TxDOT maintenance personnel, improving operational efficiency. Texas leads the nation in AV testing and deployment, with significant stakeholder support for the IRMF’s potential to reduce reporting latency and improve geographical and seve ...
  • Investigate Potential Connected and Automated Vehicle CAV Liability Issues Within TxDOT Project Summary
    Investigate Potential Connected and Automated Vehicle (CAV) Liability Issues Within TxDOT [Project Summary]
    Stoeltje, Gretchen ;
    Hwang, Billy
    2023-07-31 | PDF
    This project is one of the first CAV research projects focused on liability issues from a state department of transportation perspective. The research team was a collaboration between the Texas A&M Transportation Institute and Stantec. Six research tasks were conducted to identify potential tort liability from the deployment of CAV technologies. A ...
  • Development of a Fatigue Testing Protocol for Supporting Integrated Design of Asphalt Pavement
    Development of a Fatigue Testing Protocol for Supporting Integrated Design of Asphalt Pavement
    Solaimanian, Mansour ;
    Sahraei, Ali
    2023-07-28 | PDF
    This research study was sponsored by PennDOT and US DOT Transportation Research Center to evaluate the potential of the Hamburg wheel tracking device (HWTD) in determining the mix quality in terms of fatigue cracking resistance. The research work included applying changes to HWTD, developing the test setup and the experimental plan, conducting the ...
  • Crashworthy Perforated Square Steel Tube PSST Mailbox Support Phase I
    Crashworthy Perforated Square Steel Tube (PSST) Mailbox Support – Phase I
    Bielenberg, R.W. ;
    Stolle, C.S.
    2023-07-07 | PDF
    Federal requirements have made it mandatory that safe mailbox support systems be designed to yield or breakaway when impacted by a vehicle. The Nebraska Department of Transportation (NDOT) has previously used a non-proprietary, U-channel post mailbox support that was evaluated at the Midwest Roadside Safety Facility (MwRSF) in the 1980's. NDOT desi ...
  • Image
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    Available
    NY Statewide Behavioral Equity Impact Decision Support Tool with Replica [supporting datasets]
    Chow, Joseph Y J ;
    Ren, Xiyuan
    2023-07-04 | ZIP
    A NY statewide model choice model is developed to deterministically fit heterogeneous coefficients for trips along each census block-group OD pair conducted by each population segment within a random-utility-consistent framework. The proposed approach is to use inverse optimization (IO) to derive coefficients for each OD pair times population segme ...
  • Economical Impact of Full Closure for Accelerated Bridge Construction and Conventional Staged Construction
    Economical Impact of Full Closure for Accelerated Bridge Construction and Conventional Staged Construction
    El-Rayes, Khaled ;
    El-Gohary, Nora
    2023-07-01 | PDF
    Accelerated bridge construction (ABC) methods have been increasingly used in recent years to reduce the impact of construction operations on traffic and mobility. ABC methods, however, often require a higher initial cost, more planning, and additional design coordination. Several tools have been developed to assist decision-makers in the selection ...
  • Bees and Butterflies in Roadside Habitats Identifying Patterns Protecting Monarchs and Informing Management
    Bees and Butterflies in Roadside Habitats: Identifying Patterns, Protecting Monarchs, and Informing Management
    Meinzen, Thomas C ;
    Debinski, Diane M
    2023-07-01 | PDF
    Pollinating insects provide vital ecosystem services and are facing global declines and habitat loss. Roadsides are increasingly regarded as important potential areas for enhancing pollinator habitat. Understanding which roadsides best support pollinators—and why—is essential to helping locate and prioritize pollinator conservation efforts across r ...
  • 2023 Research Peer Exchange Transportation Pooled Funds Data Curation and Promoting Research Culture
    2023 Research Peer Exchange: Transportation Pooled Funds, Data Curation, and Promoting Research Culture
    Range, Jeffrey ;
    Hickey, Laura
    2023-07-01 | PDF
    Colorado Department of Transportation (CDOT) hosted a two-day Peer Exchange at the CDOT headquarters in Denver, Colorado on February 28 and March 1, 2023. Representatives from Colorado, Idaho, Missouri, Maryland, Vermont, Federal Highway Administration, and the National Transportation Library participated. This peer exchange focused on the discussi ...
  • MASH TL4 Engineering Analyses and Detailing of 36In And 42In High Median Barriers for LADOTD
    MASH TL-4 Engineering Analyses and Detailing of 36-In. And 42-In. High Median Barriers for LADOTD
    Williams, William F. ;
    Cui, Jilong
    2023-07-01 | PDF
    Single-slope median barriers are currently planned for several bridges in Louisiana. For these bridges, both 36-in. and 42-in. designs were developed and considered as part of this project. Both barrier designs can be used near a longitudinal joint that is approximately 1 in. wide. The 36-in. high barrier is similar to the single-slope traffic rail ...
  • MASH TL4 Engineering Analyses and Detailing of 36Inch and 42Inch High Median Barriers for LADOTD Tech Summary
    MASH TL-4 Engineering Analyses and Detailing of 36-Inch and 42-Inch High Median Barriers for LADOTD [Tech Summary]
    Williams, William
    2023-07-01 | PDF
    The objective of this research was to analyze the strengths of the four proposed retrofit designs considered for this project in accordance with AASHTO Load and Resistance Factor Design (LRFD) Bridge Design Specifications Section 13 for MASH TL-4 impact conditions. These designs are briefly described below and shown in Figure 1 (36-in. median barri ...
  • Evaluation of Nondestructive Test Pilot Projects Research Project Capsule 232B
    Evaluation of Non-destructive Test Pilot Projects: Research Project Capsule [23–2B]
    Akentuna, Moses ;
    Rupnow, Moses
    2023-07-01 | PDF
    The objective of this research is to collect and analyze data from non-destructive testing (NDT) pilot projects proposed in LTRC project 17-2B for implementation in section 502 of the Louisiana Standard Specifications for Roads and Bridges.
  • Truck Parking Investments for Missouri
    Truck Parking Investments for Missouri
    Kirk, Katie ;
    Andersen, Dan
    2023-07-01 | PDF
    Missouri’s multimodal freight system is critical to the health of both the state and national economy, and as the economy and population grow, goods movement activity is expected to increase. This growing demand for goods will likely mean more trucks on the road, leading to a greater need to enhance the infrastructure necessary for trucks to improv ...
  • Integrating Transformative Technologies in Indianas Transportation Operations
    Integrating Transformative Technologies in Indiana’s Transportation Operations
    Walker, Jasmine ;
    Li, Yujie
    2023-07-01 | PDF
    New and emerging transportation technologies, driven by automation, connectivity, and electrification, could potentially help address the transportation sector’s persistent and pervasive problems associated with safety, mobility, energy use, and so on. For this reason, the state of Indiana, uniquely positioned to serve nationwide interstate truck t ...
  • Quality Review and Assessment of Pavement Condition Survey Vehicle Data Across New England
    Quality Review and Assessment of Pavement Condition Survey Vehicle Data Across New England
    Rada, Gonzalo ;
    Simpson, Amy
    2023-07-01 | PDF
    The New England Transportation Consortium (NETC) members spend significant time and resources on pavement surface condition data collection in support of a wide range of reporting and decision-making functions. Quality data are of critical importance to these functions—as the adage goes, “garbage in, garbage out.” The data quality management plans ...
  • NETC Project 211 Quality Review and Assessment of Pavement Condition Survey Vehicle Data Across New England Pavement Data Quality Guidelines
    NETC Project 21–1: Quality Review and Assessment of Pavement Condition Survey Vehicle Data Across New England: Pavement Data Quality Guidelines
    New England Transportation Consortium
    2023-07-01 | PDF
    The New England Transportation Consortium (NETC) members consist of Maine (ME), Connecticut (CT), Massachusetts (MA), New Hampshire (NH), Rhode Island (RI), and Vermont (VT) transportation agencies. The member agencies spend a considerable amount of time and resources on pavement surface data collection. The data collected are used for a wide range ...
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