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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 2701 - 2720 of 35959 results
  • NHS Innovative Pavement Design Study
    NHS Innovative Pavement Design Study
    Pavey, Andrew
    2022-05-01 | PDF
    This research investigated the history and performance of hot mix asphalts (HMA) used by Alaska DOT&PF. The history and changes of HMA used between the 1970’s and 2022 was documented, and currently used mixes were evaluated using pavement management data to determine the rut and transverse (thermal) cracking rates by mix and binder types. Prall tes ...
  • The Health and Transportation Nexus A Conceptual Framework for Collaborative and Equitable Planning
    The Health and Transportation Nexus: A Conceptual Framework for Collaborative and Equitable Planning
    Fan, Yingling ;
    Phua, Peiyu
    2022-05-01 | PDF
    Transportation is a crucial contributor to health. It not only directly shapes the social and physical environments but also determines the type of places where people can live, learn, work, and play in their everyday lives. This project develops a conceptual framework for collaborative and equitable health and transportation planning by extending ...
  • Use of Lightweight Concrete for Bridge Decks in Kansas
    Use of Lightweight Concrete for Bridge Decks in Kansas
    Meggers, David A.
    2022-05-01 | PDF
    The purpose of this report is to present a summary of the work that has been done with lightweight aggregate concrete in Kansas.
  • Promoting the Adoption of Snow Fences through Landowner Engagement
    Promoting the Adoption of Snow Fences through Landowner Engagement
    Current, Dean ;
    Read, Aidan
    2022-05-01 | PDF
    Snow and ice problems on Minnesota roadways represent a cost of close to $100 million annually to MnDOT in addition to the associated public safety and environmental costs. MnDOT and the University of Minnesota have collaborated to estimate the costs and benefits of snow control measures as well as the constraints that landowners face to adopt snow ...
  • Florida ATMA Pilot Demonstration and Evaluation Summary
    Florida ATMA Pilot Demonstration and Evaluation [Summary]
    Agarwal, Nithin
    ORCID ICON IMG
    2022-05-01 | PDF
    University of Florida researchers tested the automated truck-mounted attenuator (ATMA) in controlled, off-road settings and on active roadways in simulated work zones.
  • Development of an Implementation Plan for Sustainable Transportation Infrastructure Systems in Iowa
    Development of an Implementation Plan for Sustainable Transportation Infrastructure Systems in Iowa
    Lee, Hosin “David” ;
    Moon, Byungkyu
    2022-05-01 | PDF
    The need to incorporate sustainability principles and practices is increasing due to both environmental and economic reasons. It is critical to identify and operationalize sustainability strategies into core administrative, planning, design, construction, operational, and maintenance activities for the transportation infrastructure systems using a ...
    Supporting Files
  • 2022 Remainder Sales Study Tennessee Department of Transportation RightofWay Appraisal Damages Study
    2022 Remainder Sales Study: Tennessee Department of Transportation Right-of-Way Appraisal Damages Study
    Khattak, Asad J. ;
    Mahdinia, Iman
    2022-05-01 | PDF
    The Tennessee Department of Transportation (TDOT) acquires private and commercial properties in conjunction with transportation projects. Many acquisitions are partial takings, i.e., only a portion of the total property is acquired. For such takings, damage amounts are included for the remainders in reports. However, the value of damages, determine ...
  • Evaluating the Performance of Inverted Pavements in Tennessee
    Evaluating the Performance of Inverted Pavements in Tennessee
    Jiang, Xi ;
    Huang, Baoshan
    2022-05-01 | PDF
    Inverted pavement is an unconventional type of flexible pavement structure. In this pavement structure, an unbound aggregate base (UAB) with a low initial modulus is sandwiched (layered) between two stiffer layers, a thinner asphalt concrete layer (AC) and a cement-treated base layer (CTB). This type of pavement structure has been a potential alter ...
  • Winter Pothole Treatments for Local Roads
    Winter Pothole Treatments for Local Roads
    Nazzal, Munir D. ;
    Talha, Sk. Abu
    2022-05-01 | PDF
    This report summarizes the results of a study was conducted to identify efficient and cost-effective pothole patching treatments and provide recommendation for optimal methods and materials that various Local Public Agencies (LPAs) can use to enhance the performance and longevity of pothole patches installed during the winter season. To achieve the ...
  • RealTime Traffic Signal System Performance Measurement Phase II Data and Functionality Enhancement Large Scale Deployment Connected and Autonomous Vehicles Integration Final Report Volume II
    Real-Time Traffic Signal System Performance Measurement Phase II: Data and Functionality Enhancement, Large Scale Deployment, Connected and Autonomous Vehicles Integration Final Report Volume II
    Jin, Peter J. ;
    Zhang, Tianya
    2022-05-01 | PDF
    Volume II provides supplementary material for Volume I. The content includes: the operational manual for ATSPM (Automated Traffic Signal Performance Measures) metadata processing and archiving program, training modules and field test data for CV (Connected Vehicle) OBU (On-Board Unit) and RSU (Roadside Unit), and details of the meeting discussion a ...
  • Connected and Automated Vehicles Investment and Smart Infrastructure in Tennessee
    Connected and Automated Vehicles Investment and Smart Infrastructure in Tennessee
    Khattak, Asad ;
    Mahdinia, Iman
    2022-05-01 | PDF
    Sponsored by the Tennessee Department of Transportation, this project aims to assist the State of Tennessee prepare for future intelligent mobility strategies that encompass connected and automated vehicles, electric vehicles, multimodal personal and freight movements, all done in a safe, secure, and equitable way. The project has developed a serie ...
  • RealTime Traffic Signal System Performance Measurement Phase II Data and Functionality Enhancement Large Scale Deployment Connected and Autonomous Vehicles Integration
    Real-Time Traffic Signal System Performance Measurement Phase II: Data and Functionality Enhancement, Large Scale Deployment, Connected and Autonomous Vehicles Integration
    Jin, Peter J. ;
    Zhang, Tianya
    2022-05-01 | PDF
    Traffic signal performance measurement and visualization provide insights as operational tools to help traffic management centers (TMC) get more paybacks from infrastructure investment. However, evaluating and monitoring signal performance is challenging in real-time, which requires immediate data collection and analysis capability. As part of the ...
  • Design and Performance of OpenGraded Friction Course OGFC Mixtures Containing Epoxy Asphalt Summary
    Design and Performance of Open-Graded Friction Course (OGFC) Mixtures Containing Epoxy Asphalt [Summary]
    West, Randy
    2022-05-01 | PDF
    Auburn Research and Technology Foundation researchers investigated the use of epoxy-modified asphalt (EMA) to improve the long-term durability and life span of OGFC mixtures on Florida roadways.
  • Creating a Resilient Port System in Texas Assessing and Mitigating Extreme Weather Events Final Report
    Creating a Resilient Port System in Texas: Assessing and Mitigating Extreme Weather Events – Final Report
    Bathgate, Kyle ;
    Sun, Jingran
    2022-05-01 | PDF
    Extreme weather events may disrupt port and coastal freight operations, resulting in direct and indirect economic losses to ports, supporting infrastructure, and reliant industry systems. Therefore, understanding the existing resilience capacity of the Texas port system to extreme weather events is necessary. To accomplish this, the weather hazards ...
  • Linking Bad Credentials to Safety Issues
    Linking Bad Credentials to Safety Issues
    Martin, Andrew ;
    Koo, Jeeyen
    2022-05-01 | PDF
    This study assesses (1) the effectiveness of the Kentucky Automated Truck Screening (KATS) system, (2) the relationship between credential and vehicle safety violations, (3) the relationship between credential and driver safety violations, and (4) the relationship between credential violations and crashes. The KATS system, which is installed at wei ...
  • Feasibility Analysis of Ultra High Performance Concrete for Prestressed Concrete Bridge Applications Phase IV
    Feasibility Analysis of Ultra High Performance Concrete for Prestressed Concrete Bridge Applications - Phase IV
    Weldon, Brad D. ;
    Jáuregui, David V.
    2022-05-01 | PDF
    Phase IV was a continuation of a project to implement Ultra High Performance Concrete (UHPC) in precast, prestressed bridge girders in New Mexico. In Phase I of this research, case studies were conducted to investigate the advantages of implementing UHPC in bridge superstructure design. Due to the benefits that UHPC offers, this feasibility study r ...
  • RealTime Signal Performance Measurement Phase Data and Functionality Enhancement Large Scale Deployment Connected and Autonomous Vehicles Integration Technical Brief
    Real-Time Signal Performance Measurement Phase Ⅱ: Data and Functionality Enhancement, Large Scale Deployment, Connected and Autonomous Vehicles Integration [Technical Brief]
    Jin, Peter J. ;
    Brennan Jr., Thomas M.
    2022-05-01 | PDF
    The primary objective of the second phase of this project is to develop and deploy a significantly enhanced version of the original toolbox, NJDOT ATSPM 2.0, along with a pilot study on the integration of adaptive signal controllers with CAV technologies. NJDOT arterial management operators can then use the ATSPM platform to generate key performanc ...
  • Local Calibration of CValues for Common Idaho Soil Types for Use in MechanisticEmpirical Pavement Design
    Local Calibration of “C-Values” for Common Idaho Soil Types for Use in Mechanistic-Empirical Pavement Design
    Santi, Michael J ;
    Crawforth, Stanly G
    2022-05-01 | PDF
    AASHTOWare Pavement ME software has been adopted by the Idaho Transportation Department (ITD) for Mechanic-Empirical analysis of pavement structures. AASHTOWare analyses are platformed on the laboratory resilient modulus test, AASHTO T 307. The test is appropriate for evaluating “undisturbed” subgrade samples and reconstituted materials. Laboratory ...
  • A Synthesis on Data Mining Methods and Applications for Automated Fare Collection AFC Data Summary
    A Synthesis on Data Mining Methods and Applications for Automated Fare Collection (AFC) Data [Summary]
    Jin, Xia
    ORCID ICON IMG
    2022-05-01 | PDF
    Florida International University researchers performed a comprehensive review of the literature to provide an overview of existing knowledge and experience in utilizing AFC data, as found in practice and in research.
  • Identifying and Prioritizing Target Regions to Conduct Outreach Activities to Improve Safety and Mobility of Aging Population Summary
    Identifying and Prioritizing Target Regions to Conduct Outreach Activities to Improve Safety and Mobility of Aging Population [Summary]
    Alluri, Priyanka
    2022-05-01 | PDF
    Florida International University developed a Geographic Information System-based approach to identify and prioritize target regions to conduct outreach activities that will help improve the safety and mobility of Florida’s aging population.
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