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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 6521 - 6540 of 36958 results
  • Evaluation of Incident Response Improvements for Statewide Application Learnings from the New Regional Traffic Management Center in Jacksonville FL Summary
    Evaluation of Incident Response Improvements for Statewide Application: Learnings from the New Regional Traffic Management Center in Jacksonville, FL [Summary]
    Vega, Peter ;
    Allen, Russell
    2019-02-01 | PDF
    University of North Florida researchers evaluated the performance of the new regional TMC in Jacksonville and quantified the impact of incidents on the operational and safety performance of the freeway network.
  • Rail Corridor Trespass Severity Assessment
    Rail Corridor Trespass Severity Assessment
    Searcy, Sarah ;
    Cunningham, Chris M.
    2019-02-01 | PDF
    This research project builds on NCDOT RP 2015-18 (“Reduction in Railroad Right-of-Way Incidents”). For NCDOT RP 2015-18, the research team analyzed Federal Railroad Administration (FRA)-reported trespassing incidents along the 174-mile North Carolina Railroad (NCRR)/Piedmont corridor between Raleigh and Charlotte, NC using strike rates, Amtrak trai ...
  • Corrosion Prevention of Bridge Tendons Using Flexible Filler Materials Summary
    Corrosion Prevention of Bridge Tendons Using Flexible Filler Materials [Summary]
    Presuel-Moreno, Francisco J
    2019-02-01 | PDF
    Florida Atlantic University researchers examined the corrosion resistance of five flexible fillers under a variety of exposure conditions and when the fillers were contaminated with fungi.
  • Evaluation of GussetLess Truss Connection to Aid Bridge Inspection and Condition Assessment
    Evaluation of Gusset-Less Truss Connection to Aid Bridge Inspection and Condition Assessment
    Bell, Erin Santini ;
    Medina, Ricardo A
    2019-02-01 | PDF
    In 2013, the newly designed Memorial Bridge, located between Portsmouth, NH, and Kittery, ME, was opened to traffic. The structural system of the bridge is composed of truss elements with a unique “gusset-less” connection which utilizes curved steel to transition from the chords to the diagonals where splice plates join the members. In this study, ...
  • Connected Vehicle Pilot Deployment Program Phase I Comprehensive Pilot Deployment Plan Tampa Hillsborough Expressway Authority THEA
    Connected Vehicle Pilot Deployment Program Phase I: Comprehensive Pilot Deployment Plan: Tampa Hillsborough Expressway Authority (THEA)
    Johnson, Steven ;
    Blue, Victor
    2019-02-01 | PDF
    The Tampa Hillsborough Expressway Authority (THEA) Connected Vehicle (CV) Pilot Deployment Program is part of a national effort to advance CV technologies by deploying, demonstrating, testing and offering lessons learned for future deployers. The THEA CV Pilot is developing a suite of CV applications, or apps, that utilize vehicle-to-infrastructure ...
  • Creative Utilization of Urban Roadway Facilities with Predictive Safety Assessment Tool Phase 1
    Creative Utilization of Urban Roadway Facilities with Predictive Safety Assessment Tool – Phase 1
    Islam, Mouyid Bin ;
    Chen, Cong
    2019-01-31 | PDF
    The impact of predictive safety assessment based on quantitative methodology of the Highway Safety Manual (HSM) is significant, particularly in urban roadway facilities. Realizing this significance, the responsibilities of safety professionals, transportation planners, and decisionmakers are critical for safe and efficient transportation in the eve ...
  • Life Space Mobility and Aging in Place
    Life Space Mobility and Aging in Place
    Zambrana, Ivis Garcia ;
    DeLaTorre, Alan
    2019-01-31 | PDF
    Research on older adults explores the notion of “aging in place”—providing older adults the opportunity to continue to occupy familiar surroundings, to live in their own homes and communities. But oftentimes one’s ability to stay or leave, particularly in old age, depends on the built environment. Mobility is the ability to meet the basic needs to ...
  • Improved Resiliency of Transportation Networks through Connected Mobility
    Improved Resiliency of Transportation Networks through Connected Mobility
    Ziehl, Paul H. ;
    Pang, Weichiang
    2019-01-31 | PDF
    A significant number of bridges (older bridges in particular) in the Southeastern and Central region of United States have been designed and constructed according to older seismic provisions. Based on an article by Wong et al. (2005), the economic loss from the Charleston region could reach over $14 billion if the 1886 Charleston earthquake were to ...
  • Development of Specifications for PortlandLimestone Cement
    Development of Specifications for Portland-Limestone Cement
    Elahi, Md Manjur A ;
    Shearer, Christopher R
    2019-01-31 | PDF
    Sulfate attack can occur in concrete due to external sulfate ions reacting with hydrated cement paste. The sulfate attack resistance of portland-limestone cements (PLCs) has been questioned due to their high limestone content, which has the potential to initiate a rare type of sulfate attack that forms thaumasite. This research evaluates the perfor ...
  • CommunityAware Charging Station Network Design for Electrified Vehicles in Urban Areas Reducing Congestion Emissions Improving Accessibility and Promoting Walking Bicycling and use of Public Transportation PhaseII
    Community-Aware Charging Station Network Design for Electrified Vehicles in Urban Areas: Reducing Congestion, Emissions, Improving Accessibility, and Promoting Walking, Bicycling, and use of Public Transportation [Phase-II]
    Venkatachalam, Saravanan ;
    Chinnam, Ratna Babu
    2019-01-31 | PDF
    A major challenge for achieving large-scale adoption of EVs is an accessible infrastructure for the communities. The societal benefits of large-scale adoption of EVs cannot be realized without adequate deployment of publicly accessible charging stations due to mutual dependence of EV sales and public infrastructure deployment. Such infrastructure d ...
  • Evaluation of Mississippi Asphalt Mixture Thermal Properties for Pavement ME Design Phase I
    Evaluation of Mississippi Asphalt Mixture Thermal Properties for Pavement ME Design - Phase I
    Heitzman, Michael ;
    Gatiganti, Surendra C
    2019-01-28 | PDF
    This study compared AASHTOWare Pavement ME Design predicted performance of five Mississippi pavements using measured and default asphalt concrete thermal properties. Thermal conductivity and heat capacity values observed from literature vary over a wide range, but the measured values for the Mississippi pavements were similar to the default values. ...
  • Evaluation of Plus Grades of Performance Graded PG Asphalt Binder Phase II
    Evaluation of Plus Grades of Performance Graded (PG) Asphalt Binder (Phase II)
    Tarefder, Rafiqul A. ;
    Hasan, Md Amanul
    2019-01-26 | PDF
    The current Performance Grade (PG) system utilizes Dynamic Shear Rheometer (DSR), Bending Beam Rheometer (BBR), and Direct Tension (DT) tests to specify the grades of a binder. Some past studies reported that these tests apply very small amount of loadings those are within the Linear Viscoelastic (LVE) limits of the binder, where polymer network ma ...
  • Driver360: A Four-Dimensional Scanning System to Better Understand Drivers [supporting datasets]
    Baek, Stephen
    ORCID ICON IMG
    2019-01-24 | PDF
    The main objective of this project was to construct a four-dimensional (4D = spatial + temporal) scanning system that can be installed in a driving simulator environment. The novel 4D scanning system, named Driver360, comprises 32 digital single lens reflex (DSLR) cameras and captures time-synchronized high-definition (HD) videos (≥ 1080p) of a sub ...
    Dataset Supporting Files
  • Strategic Outreach at the National Transportation Library
    Strategic Outreach at the National Transportation Library
    Strain, Samantha
    2019-01-15 | PDF
    Presented at the Transportation Research Board (TRB) Annual Meeting 2019, Poster Session 1552: Making Transportation Research Smart, Sustainable, and Equitable Through Libraries, Information, and Data. This poster will detail the development and implementation stages of a coordinated outreach plan at the National Transportation Library (NTL). By do ...
  • Lets Get Visual Metrics at the National Transportation Library
    Let’s Get Visual: Metrics at the National Transportation Library
    Farley, Laura M.
    ORCID ICON IMG
    2019-01-10 | PDF
    Presented at the Transportation Research Board (TRB) Annual Meeting 2019, Poster Session 1552: Making Transportation Research Smart, Sustainable, and Equitable Through Libraries, Information, and Data. This poster outlines the creation of metrics dashboards for the National Transportation Library (NTL) and the Bureau of Transportation Statistics (B ...
  • Using Driver State Detection in Automated Vehicles supporting dataset
    Using Driver State Detection in Automated Vehicles [supporting dataset]
    Gaspar, John ;
    Schwarz, Chris
    2019-01-10 | PDF
    The next several years will bring a large increase in automated vehicle capabilities. High levels of automation will require bi-directional transfers of control between the driver and vehicle. These control transfer situations pose one of the greatest potential safety shortfalls. One specific issue that arises is that drivers may be unfit or ill-pr ...
  • Assessment of Jahn Permeable Mortar System in a Historic Bridge Abutment Application 20122017
    Assessment of Jahn Permeable Mortar System in a Historic Bridge Abutment Application [2012-2017]
    Anderson, Ian A.
    ORCID ICON IMG
    2019-01-07 | PDF
    Increasingly, the importance of historic preservation is competing with the requirements to enhance structural capacity of older unique structures. Preservation of the functional and aesthetic qualities limits potential change to meet the expanded needs of the traveling public. The Taftsville Covered Bridge in Woodstock, Vermont was deteriorating a ...
  • Quantifying the Performance of LowNoise Rumble Strips
    Quantifying the Performance of Low-Noise Rumble Strips
    Hurwitz, David S. ;
    Horne, Dylan R.
    2019-01-01 | PDF
    Shoulder or centerline rumble strips (RS) generate noise and vibration to alert drivers when they are departing the lane of travel. Although inexpensive to install, easy to maintain, and very long-lasting, RS are not installed on many roadway segments primarily due to noise concerns of nearby property owners. This study evaluated the feasibility of ...
  • Field Implementation of SuperWorkable FiberReinforced Concrete for Infrastructure Construction
    Field Implementation of Super-Workable Fiber-Reinforced Concrete for Infrastructure Construction
    Khayat, Kamal H. ;
    Abdelrazik, Ahmed
    2019-01-01 | PDF
    A fiber-reinforced super-workable concrete (FR-SWC) made with 0.5% micro-macro steel fibers and 5% CaO-based expansive agent was used for the new deck slab of Bridge A8509. The selected FR-SWC had a targeted slump flow of 20 in. at the casting location. Multiple trial batches were performed, in collaboration with the concrete supplier, to adjust th ...
  • Evaluating Corrections to Improve Ride Quality Based on Surface Profiles
    Evaluating Corrections to Improve Ride Quality Based on Surface Profiles
    Fernando, Emmanuel ;
    Hu, Sheng
    2019-01-01 | PDF
    This project follows up on the original development of the defect correction index (DCI) in the Texas Department of Transportation project 0-6610. As part of implementing the DCI methodology for evaluating defect corrections using surface profile measurements, this implementation project conducted additional bump rating panels to verify the origina ...
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