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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 3901 - 3920 of 36011 results
  • Building a Smart Work Zone Using Roadside LiDAR
    Building a Smart Work Zone Using Roadside LiDAR
    Darwesh, Amir ;
    Wu, Dayong
    2021-01-01 | PDF
    Work Zone (WZ) related injuries and fatalities from vehicular crashes are rising because of the increasing maintenance needs of the aging transportation infrastructure in the United States. Although many potential benefits from commercial WZ intrusion technologies have been recognized, they have not seen widespread adoption due to cost, simplicity, ...
  • Analysis of an IncentiveBased Smartphone Application for Young Drivers
    Analysis of an Incentive-Based Smartphone Application for Young Drivers
    Henk, Russell H. ;
    Munira, Sirajum
    2021-01-01 | PDF
    Traffic crashes remain the leading cause of unintentional youth deaths and injuries across the United States. Development of new and innovative interventions continues, with the aim of addressing this public health issue for the high-risk youth driving population. This report shares results associated with an incentive-based smartphone application ...
  • Analysis of an Incentive-Based Smartphone Application for Young Drivers [supporting datasets]
    Henk, Russell H. ;
    Munira, Sirajum
    2021-01-01 | ZIP
    Traffic crashes remain the leading cause of unintentional youth deaths and injuries across the United States. Development of new and innovative interventions continues, with the aim of addressing this public health issue for the high-risk youth driving population. This report shares results associated with an incentive-based smartphone application ...
    Dataset Supporting Files
  • Field and Analytical Study for Deteriorating Precast DoubleTee Girder Bridges
    Field and Analytical Study for Deteriorating Precast Double-Tee Girder Bridges
    Seo, Junwon ;
    Kidd, Brian
    2021-01-01 | PDF
    This project discusses the performance of deteriorating double-tee (DT) girder bridges that have been in service for many years. This included field testing of two single-span DT girder bridges in South Dakota for live load distribution factors (LLDFs) and dynamic load allowance (IM). The LLDFs and IM were determined using strain data measured duri ...
  • 2020 Commodity Flow Survey Workshop September 24 2020
    2020 Commodity Flow Survey Workshop [September 24, 2020]
    Lawson, Catherine T. ;
    Hu, Patricia S.
    2021-01-01 | PDF
    The Commodity Flow Survey (CFS) Workshop represents the joint efforts of the Transportation Research Board (TRB), the U.S. Department of Transportation (DOT) Bureau of Transportation Statistics (BTS) and the TRB Standing Committee on Freight Transportation Data. The 2020 CFS Workshop was timed to coincide with the release of the 2017 CFS data table ...
  • Infrastructure Academy Transportation Program
    Infrastructure Academy Transportation Program
    Hashemian, Hassan
    2021-01-01 | PDF
    The College of Engineering, Computer Science, and Technology at the California State University, Los Angeles has expanded its National Summer Transportation Institute into a year-long program by creating the Infrastructure Academy Transportation Program (IATP). The goal of this program is to build a pipeline of diverse, well qualified young people ...
  • Review of Special Provisions and Other Conditions Placed on GDOT Projects For Imperiled Aquatic Species Protection Volume I
    Review of Special Provisions and Other Conditions Placed on GDOT Projects For Imperiled Aquatic Species Protection, Volume I
    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 ...
  • Predictive Deep Learning for Flash Flood Management
    Predictive Deep Learning for Flash Flood Management
    Corns, Steven M ;
    Long, Suzanna K
    2021-01-01 | PDF
    This research was completed in tandem as a project funded through MoDOT and the Mid-America Transportation Center. It used deep learning methods, along with weather information from NOAA/National Weather Service and geospatial data from the USGS National Map and other public geospatial data sources, to develop forecasting tools capable of assessing ...
  • Local Climate Action Planning as a Tool to Harness the Greenhouse Gas Emissions Mitigation and Equity Potential of Autonomous Vehicles and OnDemand Mobility
    Local Climate Action Planning as a Tool to Harness the Greenhouse Gas Emissions Mitigation and Equity Potential of Autonomous Vehicles and On-Demand Mobility
    Alexander, Serena ;
    Agrawal, Asha Weinstein
    2021-01-01 | PDF
    This report focuses on how cities can use climate action plans (CAPs) to ensure that on-demand mobility and autonomous vehicles (AVs) help reduce, rather than increase, green-house gas (GHG) emissions and inequitable impacts from the transportation system. The authors employed a three-pronged research strategy involving: (1) an analysis of the curr ...
  • Validation of Tsunami Design Guidelines for Coastal Bridges
    Validation of Tsunami Design Guidelines for Coastal Bridges
    Lynett, Patrick ;
    Thio, Hong Kie
    2021-01-01 | PDF
    This paper details a Transportation Pooled Fund Study, TPF-5(307), that included Alaska, California, Hawaii, Oregon (lead state), Washington, and the Federal Highway Administration. The research goal was to update guidelines as a foundation for review by the respective AASHTO sub-committee(s). This report focused on bridges for the Western United S ...
  • Targeted Investment for Food Access
    Targeted Investment for Food Access
    Novak, David C. ;
    Sullivan, James L.
    2021-01-01 | PDF
    This project focuses on modeling access to food locations by identifying the most critical roadway links in a transportation network. This project extends the Critical Closeness Accessibility (CCA) measure developed by Novak and Sullivan (2014) to identify the roadway infrastructure components that are most critical with respect to food accessibili ...
  • Evaluation of SilicaBased Materials for Use in Portland Cement Concrete
    Evaluation of Silica-Based Materials for Use in Portland Cement Concrete
    Ferraro, Christopher C. ;
    Paris, Jerry M.
    2021-01-01 | PDF
    The purpose of this research was to evaluate the mechanical performance and long-term durability of concrete containing alternative supplementary cementitious materials (ASCM) available in the state of Florida that were identified in a previous research project (FDOT BDV-31-977-06) as warranting further investigation. The ASCM chosen were two types ...
  • Measuring Dispersal and Tracking of AntiIcing and Deicing Chemicals by Using InSitu Spectral Data Phase II
    Measuring Dispersal and Tracking of Anti-Icing and Deicing Chemicals by Using In-Situ Spectral Data – Phase II
    Belz, Nathan ;
    Fulton, Gabriel
    2021-01-01 | PDF
    The use and application of salt, sand and related mixtures and derivatives have proved to be highly effective for removing or controlling the development of ice on the roadway surface. Although ample research has indicated the way in which application method, application rate, and efficacy of mix contents can vary depending on temperature and surfa ...
  • TrafficRelated Air Pollution and Childhood Asthma in the United States A Burden of Disease Assessment
    Traffic-Related Air Pollution and Childhood Asthma in the United States: A Burden of Disease Assessment
    Khreis, Haneen ;
    Alotaibi, Raed
    2021-01-01 | PDF
    Asthma is one of the leading chronic airway diseases among children in the United States and across the world. Emerging evidence indicates that traffic-related air pollution leads to the onset of childhood asthma. In this work, the researchers estimated the number of incident asthma cases among children attributable to three common traffic-related ...
  • Bicycle and Pedestrian Counting Resources
    Bicycle and Pedestrian Counting Resources
    Texas A&M Transportation Institute
    2021-01-01 | PDF
    The Bicycle and Pedestrian Program has compiled a set of resources to answer your questions about nonmotorized counting, from site selection and counter setup to quality control and data uses.
  • North Coast Hiawatha Restoration A Solid Return for Taxpayers and Business
    North Coast Hiawatha Restoration: A Solid Return for Taxpayers and Business
    Mathews, Jim ;
    Aiello, Joseph
    2021-01-01 | PDF
    Rail Passengers assesses that restoring the North Coast Hiawatha as a daily Amtrak service would generate $271 million each year in economic benefits to the seven states served while costing Amtrak roughly $68 million per year to operate – a cost offset 66% by collection of $41 million each year in fares and other customer revenue. As many as 426,0 ...
  • ESRI Insights Phase II The War Room
    ESRI Insights Phase II: The War Room
    Moser, Andrea ;
    Wells, Kevin
    2021-01-01 | PDF
    UDOT is developing a dashboard that can display information for winter storm events. This project is focused on creating a one-stop shop for decision-making tools and will serve to inform operations managers, who will be making decisions based on feedback from the dashboards. The recommendations this report makes will help the Maintenance Operation ...
  • PostFire Assessment of Prestressed Concrete Bridges in Indiana
    Post-Fire Assessment of Prestressed Concrete Bridges in Indiana
    Varma, Amit H. ;
    Olek, Jan
    2021-01-01 | PDF
    This project focused on evaluating the effects of fire-induced damage on concrete bridge elements, including prestressed concrete bridge girders. A series of controlled heating experiments, pool fire tests, material tests, and structural loading tests were conducted. Experimental results indicate that the portion of concrete subjected to temperatur ...
  • Behavior and Repair of Corroded Steel HPiles
    Behavior and Repair of Corroded Steel H-Piles
    Abdulazeez, Mohanad M ;
    Ramadan, Amro
    2021-01-01 | PDF
    This report summarizes the details of experimental work and finite element modeling conducted to evaluate: 1) the remaining axial capacity of H-piles having different corrosion severity and extension levels, and 2) the performance of repaired corroded H-piles. Seventeen full-scale H-piles were investigated under concentric and eccentric loads. The ...
  • Characterization of Bases and Subbases for AASHTO ME Pavement Design
    Characterization of Bases and Subbases for AASHTO ME Pavement Design
    Amirkhanian, Serji N. ;
    Corley, Mary
    2021-01-01 | PDF
    The characteristics of base and subbase layers play a very important role in pavement performance under the complex conditions of traffic loading and environment. Unreasonable and inaccurate base design parameters can result in poor pavement performance as well as higher construction and maintenance costs. This study was conducted to develop materi ...
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