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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 1301 - 1320 of 36114 results
  • Product Material Investigation and Evaluation of Jays Majic Mud for Use in KDOT Construction and Maintenance Applications Technical Summary
    Product Material Investigation and Evaluation of Jay’s Majic Mud for Use in KDOT Construction and Maintenance Applications [Technical Summary]
    McArtor, Erinn ;
    Broxterman, Brandon
    2024-04-01 | PDF
    KDOT currently uses a variety of thin bonded overlay systems to prolong the life of bridge decks in Kansas. These vary in both thickness and material type from thin ¼ in. bonded polymer overlays to common 1.5 in. silica fume concrete overlays. Jay’s Majic Mud was submitted as a potential new material product that could serve as a cost-effective alt ...
  • NonTraffic Surveillance Fatality and Injury Statistics in NonTraffic Crashes in 2021 Traffic Safety Facts Research Note
    Non-Traffic Surveillance: Fatality and Injury Statistics in Non-Traffic Crashes in 2021 [Traffic Safety Facts - Research Note]
    United States. Department of Transportation. National Highway Traffic Safety Administration. National Center for Statistics and Analysis
    2024-04-01 | PDF
    Non-traffic motor vehicle crashes are a class of crashes that occur off the public trafficways. These are mostly single-vehicle crashes on private roads, two-vehicle crashes in parking facilities, or collisions with pedestrians in driveways. In addition, there are “non-traffic incidents” such as a vehicle falling on a person underneath the vehicle ...
  • Traffic Safety Evaluation of Pedestrians and Bicyclists at Rectangular Rapid Flashing Beacons and Pedestrian Hybrid Beacons in Minnesota
    Traffic Safety Evaluation of Pedestrians and Bicyclists at Rectangular Rapid Flashing Beacons and Pedestrian Hybrid Beacons in Minnesota
    Saari, Ian ;
    Wagner, Mark
    2024-04-01 | PDF
    To improve the visibility and safety of pedestrian and bicyclist crossings, traffic-safety professionals across Minnesota have installed the Rectangular Rapid Flashing Beacon (RRFB) and Pedestrian Hybrid Beacon (PHB) at numerous locations around the state. The purpose of this evaluation was to determine the safety benefits, if any, for pedestrians ...
  • Improving Roadway Debris Clearance for CHART Responders Research Summary
    Improving Roadway Debris Clearance for CHART Responders: Research Summary
    Yang, Xianfeng
    2024-04-01 | PDF
    This project intends to investigate the feasibility of deploying LaneBlade® on CHART vehicles under various environmental conditions such as low visibility conditions, etc., as well as the effectiveness of LaneBlade® in reducing debris clearance time in various scenarios where its deployment is feasible.
  • 2021 NonTraffic Surveillance System Coding and Validation Manual
    2021 Non-Traffic Surveillance System Coding and Validation Manual
    United States. Department of Transportation. National Highway Traffic Safety Administration. National Center for Statistics and Analysis
    2024-04-01 | PDF
    The Non-Traffic Surveillance (NTS) system is a virtual data collection system of which one part is designed to gather data on fatalities and injuries that occur in nontraffic crashes, which can occur on private roads, driveways, and parking lots. The NTS program accepted potential crashes only from FARS analysts and from sampled Crash Report Sampli ...
  • Domestic Airline Fares Consumer Report Fourth Quarter 2023 Passenger and Fare Information
    Domestic Airline Fares Consumer Report: Fourth Quarter 2023 Passenger and Fare Information
    United States. Department of Transportation
    2024-04-01 | Domestic Airline Fares Consumer Report | PDF
    Each month the Department of Transportation releases an Air Travel Consumer Report that includes information about various service quality elements, including flight delays, mishandled baggage, over sales, and a variety of other types of consumer complaints. In response to an increasing number of inquiries from consumers about domestic airline pric ...
  • 2020 NonTraffic Surveillance System Coding and Validation Manual
    2020 Non-Traffic Surveillance System Coding and Validation Manual
    United States. Department of Transportation. National Highway Traffic Safety Administration. National Center for Statistics and Analysis
    2024-04-01 | PDF
    The Non-Traffic Surveillance (NTS) system is a virtual data collection system of which one part is designed to gather data on fatalities and injuries that occur in nontraffic crashes, which can occur on private roads, driveways, and parking lots. The NTS program accepted potential crashes only from FARS analysts and from sampled Crash Report Sampli ...
  • Study on Spectrum Options for GDOTs Connected Vehicle Infrastructure
    Study on Spectrum Options for GDOT’s Connected Vehicle Infrastructure
    Kim, Seungmo
    2024-04-01 | PDF
    Vehicle-to-everything (V2X) communications are expected to take a critical role in a variety of transportation safety applications in connected and autonomous vehicle environment. However, Dedicated Short-Range Communications (DSRC), one of the representative technologies implementing the V2X communications, is encountering challenges due to the re ...
  • A DataDriven Analysis of Transportation Infrastructure Equity in Utah
    A Data-Driven Analysis of Transportation Infrastructure Equity in Utah
    Burbidge, Shaunna K. ;
    Gee, Collin
    2024-04-01 | PDF
    Transportation investments vary across geographic areas. Currently, there is no mechanism in place to ensure that those investments are equitable. This project examined transportation investments and infrastructure quality (e.g., pavement conditions, presence of bike lanes, transit access, speed limits, etc.) in urban and rural Utah and correlated ...
  • 07165 Logistics Sprawl Impacts on Ecommerce Travel Patterns Summary
    0-7165: Logistics Sprawl Impacts on E-commerce Travel Patterns [Summary]
    Bhat, Chandra R. ;
    Asmussen, Katherine
    2024-03-31 | PDF
    E-commerce services and facilities have the benefits of bringing new employment opportunities to communities and meeting consumer needs, but they also attract heavy traffic, which results in congestion and negative environmental and economic repercussions. This project offers a new lens for studying future e-commerce facility siting, considering cu ...
  • Targeted Warning Messages to Protect Moving and Stationary Maintenance Lane Closures
    Targeted Warning Messages to Protect Moving and Stationary Maintenance Lane Closures
    Soltani, Iman ;
    Gao, Dechen
    2024-03-31 | PDF
    This report details the development and evaluation of an innovative component in a traffic management system aimed at enhancing safety in work zones through targeted warning messages. The primary objective of the system is to improve the rates of driver compliance with work zone guidelines presented on signages and message boards, which our studies ...
  • Development of an Immersive Training Platform for Roadway Construction Workers using Virtual Reality Technologies Policy Brief
    Development of an Immersive Training Platform for Roadway Construction Workers using Virtual Reality Technologies [Policy Brief]
    Wang, Zhenyu ;
    Lin, Pei-Sung
    2024-03-31 | PDF
    Workforce education is crucial to ensuring the safety and equality of the work environment. Immersive virtual reality (VR) training is revolutionizing workforce education, providing practical on-the-job training within a safe simulated environment. The project aimed to develop an immersive training platform using state-of-the-art VR technologies an ...
  • Integrating Road Weather Technology Data in Highway Operations Research Summary
    Integrating Road Weather Technology Data in Highway Operations [Research Summary]
    Franz, Mark L.
    2024-03-29 | PDF
    The primary objectives of this study were to establish the state-of-practice in winter weather data applications and to design a platform that integrates all weather data into a single decision support tool. Expected outcomes include documentation of the state-of-practice and interface designs for a comprehensive winter operations decision support ...
  • BIM for Bridges and Structures Final Report
    BIM for Bridges and Structures Final Report
    Mitchell, Alexa ;
    Maier, Francesca
    2024-03-21 | PDF
    In 2017, the AASHTO Committee on Bridges and Structures (COBS), Technical Committee T-19 on Software and Technology organized the pooled fund study TPF-5(372) BIM for Bridges and Structures. The pooled fund objective was to develop a standard way of exchanging 3D models and other digital data using an open, nonproprietary format. The TPF-5(372) stu ...
    Supporting Files
  • Study and Evaluation Material Response in Hot Mix Asphalt Based on Field Instrumentation Phase 3
    Study and Evaluation Material Response in Hot Mix Asphalt Based on Field Instrumentation (Phase 3)
    Tarefder, Rafiqul A. ;
    Khan, Zafrul
    2024-03-16 | PDF
    This report documents the stress-strain responses from sensors embedded inside different layers of a pavement section on Interstate I-40, near Albuquerque, New Mexico, during the Phase 3 of this project. Pavement responses were measured under real time traffic loads and routine Falling Weight Deflectometer (FWD) test loads at various weather condit ...
  • Literature Review of IDEALCT and IDEALRT Test Methods for Balanced Mixed Design Research Project Capsule 234B
    Literature Review of IDEAL-CT and IDEAL-RT Test Methods for Balanced Mixed Design: Research Project Capsule [23–4B]
    Salari, Saman ;
    Rupnow, Tyson
    2024-03-01 | PDF
    The objective of this project is to evaluate published literature regarding the efficacy of IDEAL-CT and IDEAL-RT test methods to characterize the performance of asphalt mixtures in the field. Many agencies have used and researched these BMD methods, and reviewing their efficiency can provide the state of Louisiana with additional tools and help ag ...
  • FullScale Dynamic Wireless Power Transfer and Pilot Project Implementation
    Full-Scale Dynamic Wireless Power Transfer and Pilot Project Implementation
    Moncada, Oscar Andrés ;
    Imran, Zainab
    2024-03-01 | PDF
    Considering the challenges hindering the widespread adoption of electric vehicles (EVs) and heavy-duty electric vehicles (HDEVs), the integration of dynamic wireless power transfer (DWPT) technology into roadways has gained interest. By embedding DWPT components into pavement, electrical power can be delivered to an EV or HDEV as they are in motion ...
  • Online Instructional Tools for Motor Carriers
    Online Instructional Tools for Motor Carriers
    Howell, Brian ;
    Walton, Jennifer
    2024-03-01 | PDF
    Commercial motor carrier customers on Kentucky highways must register and pay taxes for licensing and credentialing requirements. The Kentucky Transportation Cabinet (KYTC) provides an online Motor Carrier Portal that offers information and instructions on meeting these requirements, but customers have increasingly resorted to calling into KYTC’s m ...
  • Evaluating the Potential Benefits of Implementing AASHTO Guide Specifications for the Analysis and Identification of Fracture Critical and System Redundant Members
    Evaluating the Potential Benefits of Implementing AASHTO Guide Specifications for the Analysis and Identification of Fracture Critical and System Redundant Members
    Connor, Robert J. ;
    Korkmaz, Cem
    2024-03-01 | PDF
    An exploratory study was conducted for some bridges in the state of Indiana that evaluated the implementation potential of the AASHTO Guide Specifications for Internal Redundancy of Mechanically-Fastened Built-Up Steel Members (IRM Guide Specification) and the AASHTO Guide Specifications for the Analysis and Identification of Fracture Critical Memb ...
  • Literature Review and Industry Survey of Recycled Fibers from Novel and Existing Source Materials for Concrete Use
    Literature Review and Industry Survey of Recycled Fibers from Novel and Existing Source Materials for Concrete Use
    Nassiri, Somayeh ;
    Roy, Souvik
    2024-03-01 | PDF
    Research has demonstrated the multiple benefits of fibers for the early and late-age performance of concrete pavements and bridge decks. Many research studies have also shown that the expected enhancements in properties of concrete with recycled fibers could be commensurate with those of concrete reinforced with virgin fibers. However, compared wit ...
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