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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 4361 - 4380 of 36908 results
  • Measurement and Modeling of Broadband MillimeterWave Signal Propagation Between Intelligent Vehicles Research Brief
    Measurement and Modeling of Broadband Millimeter-Wave Signal Propagation Between Intelligent Vehicles [Research Brief]
    Molisch, Andreas F
    ORCID ICON IMG
    2021-01-01 | PDF
    Data communication links are essential components of the ecosystem of intelligent vehicles, enabling autonomous and semi-autonomous driving. Maintaining a reliable, low latency communication link has been a topic of interest in research and product development. The driving force of these developments is a better awareness of the wider surroundings ...
  • Test Methods to Quantify Cracking Resistance of Asphalt Binders and Mixtures
    Test Methods to Quantify Cracking Resistance of Asphalt Binders and Mixtures
    Newcomb, David E. ;
    Arabali, Poura
    2021-01-01 | PDF
    Incorporating cracking tests and criteria in binder acceptance, mix design, and construction quality control (QC and quality assurance (QA) offer a way to improve pavement performance. The objective of this research is to identify and, if necessary, refine binder and mixture tests capable of addressing asphalt cracking in Minnesota asphalt pavement ...
  • Nonmotorized Traffic Monitoring and Crash Analysis
    Nonmotorized Traffic Monitoring and Crash Analysis
    Roll, Josh
    ORCID ICON IMG
    2021-01-01 | PDF
    This report documents the collaboration between ODOT and Bend MPO to develop and execute a nonmotorized traffic data collection program. Using automated technology and data processing techniques, this research demonstrates a least cost path to developing a nonmotorized traffic count program for a small urban community. Data processing techniques ar ...
  • Fusion of Airborne and Terrestrial Sensed Data for Realtime Monitoring of Traffic Networks
    Fusion of Airborne and Terrestrial Sensed Data for Real-time Monitoring of Traffic Networks
    Watanabe, Rafael Akio Alves ;
    Sorour, Sameh
    2021-01-01 | PDF
    Expanding the deployment of traffic monitoring systems and information transmission is a crucial step toward increasing the efficiency, reliability and safety of vehicular transportation. In this project, the authors present a real-time data analysis system for aerial LiDAR roadway vehicle detection as an option for expanding traffic monitoring. Th ...
  • Developing Guidelines for Assessing the Effectiveness of Intelligent Compaction Technology
    Developing Guidelines for Assessing the Effectiveness of Intelligent Compaction Technology
    Mazari, Mehran ;
    Aval, Siavash F
    2021-01-01 | PDF
    Many factors affect pavement compaction quality, which can vary. Such variability may result in an additional number of passes required, extended working hours, higher energy consumption, and negative environmental impacts. The use of Intelligent Compaction (IC) technology during construction can improve the quality and longevity of pavement struct ...
  • Review of Special Provisions and Other Conditions Placed on GDOT Projects For Imperiled Aquatic Species Protection Volume IV
    Review of Special Provisions and Other Conditions Placed on GDOT Projects For Imperiled Aquatic Species Protection, Volume IV
    Nelson, Jace M ;
    Stephens, Timothy A
    2021-01-01 | PDF
    Georgia has numerous protected freshwater species, which means that the Georgia Department of Transportation (GDOT) must frequently consult with federal and state agencies to identify measures to avoid, minimize and mitigate impacts to imperiled aquatic organisms. Some of these measures, such as restrictions on in-water work during the reproductive ...
  • Measurement and Modeling of Broadband MillimeterWave Signal Propagation Between Intelligent Vehicles
    Measurement and Modeling of Broadband Millimeter-Wave Signal Propagation Between Intelligent Vehicles
    Molisch, Andreas F ;
    Hammoud, Hussein
    2021-01-01 | PDF
    Communications between vehicles is one of the most important prerequisites for inter-vehicle coordination, a key feature needed to enable autonomous and semi-autonomous driving, from an efficiency, convenience and safety perspective. Such communication will have to be done with very low latency, which lead the industry into looking at mm-wave bands ...
  • Best Strategies for Hiring Retaining and Utilizing Minorities and Women
    Best Strategies for Hiring, Retaining, and Utilizing Minorities and Women
    Ivey, Stephanie ;
    Camp, Janey
    2021-01-01 | PDF
    To better assess the state of workforce diversity and opportunities to address diversity challenges, TDOT issued a research contract to the University of Memphis (with subcontracts to Tennessee State University and Vanderbilt University) in December 2018 to examine these issues. The focus of this research was to assess TDOT’s goals, challenges, and ...
  • Review of Special Provisions and Other Conditions Placed on GDOT Projects For Imperiled Aquatic Species Protection Volume III
    Review of Special Provisions and Other Conditions Placed on GDOT Projects For Imperiled Aquatic Species Protection, Volume III
    Nelson, Jace M ;
    Stephens, Timothy A
    2021-01-01 | PDF
    Georgia has numerous protected freshwater species, which means that the Georgia Department of Transportation (GDOT) must frequently consult with federal and state agencies to identify measures to avoid, minimize and mitigate impacts to imperiled aquatic organisms. Some of these measures, such as restrictions on in-water work during the reproductive ...
  • Modeling Driver Behavior during Automated Vehicle Platooning Failures
    Modeling Driver Behavior during Automated Vehicle Platooning Failures
    McDonald, Anthony D ;
    Sarkar, Abhijit
    2021-01-01 | PDF
    Automated vehicles (AVs) promise to revolutionize driving safety. Driver models can aid in achieving this promise by providing a tool for designers to ensure safe interactions between human drivers and AVs. In this project, we performed a literature review to identify important factors for AV takeover safety and promising models to capture these fa ...
  • Review of Special Provisions and Other Conditions Placed on GDOT Projects For Imperiled Aquatic Species Protection Volume II
    Review of Special Provisions and Other Conditions Placed on GDOT Projects For Imperiled Aquatic Species Protection, Volume II
    Nelson, Jace M ;
    Stephens, Timothy A
    2021-01-01 | PDF
    Georgia has numerous protected freshwater species, which means that the Georgia Department of Transportation (GDOT) must frequently consult with federal and state agencies to identify measures to avoid, minimize and mitigate impacts to imperiled aquatic organisms. Some of these measures, such as restrictions on in-water work during the reproductive ...
  • Redundancy of Twin Steel Box Girder Bridges
    Redundancy of Twin Steel Box Girder Bridges
    Mehrabi, Armin ;
    Azizinamini, Atorod
    2021-01-01 | PDF
    Currently, twin steel box girder bridges (TSGB) are classified as bridges with fracture critical members. Recent research results, however, demonstrated a high level of internal redundancy. The main question as to what load levels and performance measures established on a scientific basis should be used still remains unanswered. The objective of th ...
  • Results Discussion and Interpretation of Mussel Translocations
    Results, Discussion, and Interpretation of Mussel Translocations
    Fisher, Mark ;
    Hart, Michael A
    2021-01-01 | PDF
    Translocation is used to conserve mussels, yet there remains a debate about its merit due to poor understating of its effects on transported mussels. This study evaluated survivorship, body condition, and total glycogen and lipids for one common and widely distributed species (Cyclonaias pustulosa), two rare species (Cyclonaias petrina; Lampsilis b ...
  • Capillary Pressure Sensor Testing to Identify Curing Regimen in Freshly Placed Bridge Decks
    Capillary Pressure Sensor Testing to Identify Curing Regimen in Freshly Placed Bridge Decks
    Murray, Cameron D. ;
    Spann, Samuel W
    2021-01-01 | PDF
    Early-age plastic shrinkage cracking is a common problem with the construction of concrete bridge decks due to the high surface area-to-volume ratio and exposure to potentially detrimental environmental effects. Curing regimens are utilized to mitigate this cracking risk such as wet burlap-polyethylene sheeting, membrane forming curing compounds, a ...
  • Crash Data Analysis Tool 20 Research Report and User Guide
    Crash Data Analysis Tool 2.0: Research Report and User Guide
    Green, Eric ;
    Ross, Paul
    2021-01-01 | PDF
    This manual describes the Crash Data Analysis Tool (CDAT), which can be used by Kentucky Transportation Cabinet (KYTC) staff and the agency’s work partners to securely access crash datasets. CDAT users can query and download data using flags stored during post-processing.
  • GAQEBkSP A DRLBased Urban Traffic Dynamic Rerouting Framework Using FogCloud Architecture
    GAQ-EBkSP: A DRL-Based Urban Traffic Dynamic Rerouting Framework Using Fog-Cloud Architecture
    Du, Runjia ;
    Chen, Sikai
    2021-01-01 | PDF
    DRL(GAQ)-EBkSP model based-on fog-cloud architecture is proposed to dynamically reroute the vehicles in large transportation networks graph attention mechanism to fuse information and extract relevant information to enlarge the learning efficiency Proposed model outperforms baseline model (without learning) under different scenarios with different ...
  • Research Peer Exchange Summary Report Best Practices in SPR Part B Fundamentals Staff Development and Research Program Engagement
    Research Peer Exchange Summary Report: Best Practices in SPR Part B Fundamentals, Staff Development, and Research Program Engagement
    North Dakota. Dept. of Transportation  ...
    2021-01-01 | PDF
    The transportation research programs at the North Dakota, South Dakota, and Nebraska Departments of Transportations (DOTs) hosted a peer exchange to discuss the fundamentals of State Planning and Research (SPR) Part B funding and how DOTs can best encourage and implement staff development and research program engagement. The peer exchange was condu ...
  • Synthesis on the Best Practices for State DOTs to Determine Project Delivery Time Project Management and Ratio of Consultant to InHouse Design
    Synthesis on the Best Practices for State DOTs to Determine Project Delivery Time, Project Management, and Ratio of Consultant to In-House Design
    Jafari, Amirhosein ;
    Kermanshachi, Sharareh
    2021-01-01 | PDF
    Transportation agencies are experiencing unprecedented pressure to deliver projects successfully. An obvious response to this pressure is to improve the project delivery process through the implementation of available successful project management practices. Also, with increasing restraints upon budgets and large workloads, transportation agencies ...
  • Effectiveness of Teenage Support System TDSS on Reducing Traffic Violation Behaviors for Teenage Drivers at the Early Time of Licensure
    Effectiveness of Teenage Support System (TDSS) on Reducing Traffic Violation Behaviors for Teenage Drivers at the Early Time of Licensure
    Disi Tian, M S ;
    Morris, Nichole L.
    2021-01-01 | PDF
    Teenage drivers are at a disproportionate risk of fatal and serious injuries due to motor vehicle crashes. A Field Operational Test (FOT) funded by Minnesota Department of Transportation (MnDOT) used the Teen Driver Support System (TDSS) smartphone application to collect real-time driving performance data from a cohort of approximately 300 teen dri ...
  • Moving Forward Ohio Department of Transportation Research Program Newsletter 2021 Volume 1
    Moving Forward: Ohio Department of Transportation Research Program Newsletter- 2021 Volume 1
    Ohio’s Research Initiative for Locals
    2021-01-01 | PDF
    ORIL is a program designed to provide practice-ready solutions to real-world issues facing Ohio’s local transportation system through research. It’s a multi-organizational collaborative effort to improve the transportation network in Ohio’s counties, townships, cities and villages.
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