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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 3181 - 3200 of 36873 results
  • Improving Multimodal Traffic Safety for MultiLane Arterials
    Improving Multimodal Traffic Safety for Multi-Lane Arterials
    Abdel-Aty, Mohamad ;
    Ugan, Jorge
    2022-05-01 | PDF
    In the previous tasks we have conducted extensive analysis by the driving simulator and data analytics studies to validate the effects of speed management countermeasures on speed and non-motorist safety. The driving simulator tested the effects of Rectangle Rapid Flashing Beacon (RRFB), Pedestrian Hybrid Beacon (PHB), and speed feedback sign on sp ...
  • Development of a Resilience Index for the Florida Surface Transportation System
    Development of a Resilience Index for the Florida Surface Transportation System
    Choi, Juyeong ;
    Abdelrazig, Yassir
    2022-05-01 | PDF
    Transportation resilience has a multifaceted nature, which requires analyzing various factors across multiple domains (i.e., technical, social, economic, and environmental) for evaluation. However, existing resilience indicators, which are based mainly on the physical conditions of transportation assets, are not comprehensive enough to provide info ...
  • Develop Refine and Validate a Survey to Assess Adults Perspectives of Autonomous RideSharing Services Summary
    Develop, Refine, and Validate a Survey to Assess Adult’s Perspectives of Autonomous Ride-Sharing Services [Summary]
    Classen, Sherrilene
    2022-05-01 | PDF
    Autonomous vehicles (AVs) have generated great excitement for the future of transportation. The promise of self-driving vehicles offers a valuable transportation option to those who do not drive, own a car, or are exploring how to get around their community without driving. For older adults, AVs might provide a vital link to shopping, entertainment ...
  • Investigating the Resilience of Accessibility to Emergency and Lifesaving Facilities under Natural Hazards
    Investigating the Resilience of Accessibility to Emergency and Lifesaving Facilities under Natural Hazards
    Wang, Chih-Hao ;
    Chen, Na
    2022-05-01 | PDF
    Studying accessibility, including the resilience of city transportation networks, is critical to understand how these networks influence individuals’ mobility and lives. This study developed an analytical research framework to examine the resilience of accessibility to emergency and lifesaving facilities under the threats of natural hazards such as ...
  • Development of DroneAssisted Pavement Profile Mapping NearSurface Void Detection Application
    Development of Drone-Assisted Pavement Profile Mapping: Near-Surface Void Detection Application
    Irizarry, Javier ;
    Rakha, Tarek
    2022-05-01 | PDF
    Monitoring and performance-verification activities of roadway maintenance are labor-intensive tasks and prone to errors. The adoption of unmanned aerial system (UAS) technologies provides an opportunity to improve upon these tasks. This study had the goals of: (1) developing a drone-assisted workflow for pavement maintenance-related tasks, (2) deve ...
  • MEPDG Climate Data Input for the State of Tennessee
    MEPDG Climate Data Input for the State of Tennessee
    Onyango, Mbakisya ;
    Owino, Joseph
    2022-05-01 | PDF
    The Pavement Mechanistic Empirical Design (PMED) method was developed to address shortcomings experienced on the AASHTO Guide for Design of Pavement Structures (1993) including environmental/climate considerations. However, the implementation of PMED requires a large number of design inputs that characterize materials, traffic, and climatic conditi ...
  • Sunshine Skyway Bridge Monitoring Phase II System Development Summary
    Sunshine Skyway Bridge Monitoring Phase II: System Development [Summary]
    Florida. Department of Transportation
    2022-05-01 | PDF
    University of Florida researchers developed a Web interface which centralizes the systems monitoring the Sunshine Skyway Bridge. They also analyzed long-term bridge data to establish the bounds of typical bridge behavior and made recommendations for an alert response plan when data indicate out-of-bounds behavior.
  • Autonomous Truck Mounted Attenuator ATMA Incident Response CSU Data Report
    Autonomous Truck Mounted Attenuator (ATMA) Incident Response - CSU Data Report
    Daily, Jeremy ;
    Span, Martin
    2022-05-01 | PDF
    As a specific Connected and Automated Vehicle (CAV) technology, the Autonomous Truck Mounted Attenuator (ATMA) is being developed by hardware and software vendors to help save the lives of Department of Transportation (DOT) workers in active highway work zones. The ATMA utilizes an innovative Leader/Follower technology that allows manned and unmann ...
  • Evaluating the Connection Between Transit and TNCs Transportation Network Companies in Pinellas County for Statewide Application Summary
    Evaluating the Connection Between Transit and TNCs (Transportation Network Companies) in Pinellas County for Statewide Application [Summary]
    Florida. Department of Transportation
    2022-05-01 | PDF
    University of Florida researchers studied partnerships between PSTA and TNCs to enhance understanding of project development and how cost-effectiveness can be maintained.
  • Development of Standard Methodology to Measure Sulfate Ions in PostTensioned Grouts Summary
    Development of Standard Methodology to Measure Sulfate Ions in Post-Tensioned Grouts [Summary]
    Lau, Kingsley
    2022-05-01 | PDF
    Florida International University researchers identified mechanisms by which sulfate ions move through grout and identified the effects of grout sampling methodologies for deficient grouts.
  • Toward a Florida Automated Connected Electric and Shared ACES Transportation System Roadmap Phase I Summary
    Toward a Florida Automated, Connected, Electric and Shared (ACES) Transportation System Roadmap: Phase I [Summary]
    Lin, Pei-Sung
    2022-05-01 | PDF
    The research objective was to develop and demonstrate tools that can serve as the foundation of coordinated ACES activities in Florida. The researchers also conducted outreach events with stakeholders to introduce and encourage use of the tools.
  • Design of Educational Material and Public Awareness Campaigns for Improving Work Zone Driver Safety
    Design of Educational Material and Public Awareness Campaigns for Improving Work Zone Driver Safety
    Chahine, Ricardo ;
    Adu Gyamfi, Prince
    2022-05-01 | PDF
    This project aims to help improve work zone driver safety in Indiana through driver education and public awareness campaigns. The project focused on two specific objectives: (1) to design a public awareness campaign to increase drivers’ knowledge and influence positive attitudes about work zone driver safety practices; and (2) to prepare educationa ...
  • Traffic Safety Facts Research Note Distracted Driving 2020
    Traffic Safety Facts Research Note: Distracted Driving 2020
    United States. Department of Transportation. National Highway Traffic Safety Administration
    2022-05-01 | PDF
    The National Highway Traffic Safety Administration works to reduce the occurrence of distracted driving and raise awareness of its dangers. This risky behavior poses a danger to vehicle occupants as well as pedestrians and pedalcyclists. Driver distraction is a specific type of driver inattention. Distraction occurs when drivers divert their attent ...
  • Teen Distracted Driver Data Teens and Distracted Driving 2021
    Teen Distracted Driver Data: Teens and Distracted Driving 2021
    United States. Department of Transportation. National Highway Traffic Safety Administration
    2022-05-01 | PDF
    The National Highway Traffic Safety Administration works to reduce the occurrence of distracted driving and raise awareness of its dangers. This risky behavior poses a danger to vehicle occupants as well as pedestrians and pedalcyclists. Driver distraction is a specific type of driver inattention. Distraction occurs when drivers divert their attent ...
  • Feasibility Analysis of Realtime Intersection Data Collection and Processing Using Drones Summary
    Feasibility Analysis of Real-time Intersection Data Collection and Processing Using Drones [Summary]
    Ozguven, Eren
    2022-05-01 | PDF
    Florida State University researchers examined the feasibility of extracting detailed intersection traffic data from drone videos using computer vision applications.
  • 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 ...
  • Development of DroneAssisted Highway Mowing Operations Planning Monitoring and Verification Capabilities
    Development of Drone-Assisted Highway Mowing Operations Planning, Monitoring, and Verification Capabilities
    Irizarry, Javier ;
    Cho, Yong Kwon
    2022-05-01 | PDF
    This project focused on the development for the integration of unmanned aerial systems (UASs) and artificial intelligence (AI) to automate planning, monitoring, and performance verification of highway maintenance tasks within the Georgia Department of Transportation (GDOT). The current mowing assessment for verifying the performance of mowing contr ...
  • Drones and Other Technologies To Assist in Disaster Relief Efforts
    Drones and Other Technologies To Assist in Disaster Relief Efforts
    Li, Shuai ;
    Moslehy, Amirsalar
    2022-05-01 | PDF
    Tennessee faces many threats from natural disasters such as storm, flooding, landslide, and earthquake, which damage civil infrastructure and cause major service interruptions. The application of emerging technologies such as drones, sensing technologies, machine learning methods, and optimization techniques in disaster preparedness, response, and ...
  • Develop Surface Aggregate Classification of Reclaimed Asphalt Pavement Project Summary
    Develop Surface Aggregate Classification of Reclaimed Asphalt Pavement [Project Summary]
    Hu, Sheng ;
    Zhou, Fujie
    2022-04-30 | PDF
    The aggregate blended DFT value provides a good indication of the skid resistance of the corresponding mixture or pavement surface. A higher aggregate blended DFT implies a higher skid resistance for a given gradation or mixture type. According to the findings, the recommendations are as follows: • The measured RAP aggregate DFT was suggested to be ...
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