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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 2761 - 2780 of 36873 results
  • GBeam Bridge Girder Pultrusion Section Design and Optimization
    GBeam Bridge Girder Pultrusion: Section Design and Optimization
    Schanck, Andrew ;
    Davids, William G.
    2022-12-01 | PDF
    The GBeam – a fiber reinforced polymer tub-shaped bridge girder developed by the University of Maine and licensed for manufacture to AIT Bridges– has emerged as a viable replacement for traditional steel and prestressed girders in short to medium span bridges. GBeam manufacture is time and labor intensive, requiring many production steps to be done ...
  • NHTSA Special Crash Investigations Comprehensive Study of 2019 US Pediatric Vehicular Hyperthermia Fatalities
    NHTSA Special Crash Investigations: Comprehensive Study of 2019 U.S. Pediatric Vehicular Hyperthermia Fatalities
    Wiacek, Christopher J. ;
    Firey, Lauren M. L.
    2022-12-01 | Special Crash Investigations | PDF
    Incidents of children dying from heatstroke in vehicles, either because they were left or became trapped, have increased in recent years. Pediatric vehicular heatstroke (PVH), also known as hyperthermia, describes an elevated body temperature that can occur if a child is left in a hot vehicle and may result in fatal injuries. At least 849 children ...
  • DataDriven Bridge Management Using Descriptive and Predictive Machine Learning Models
    Data-Driven Bridge Management Using Descriptive and Predictive Machine Learning Models
    Banaei-Kashani, Farnoush ;
    Arens, Kevin
    2022-12-01 | PDF
    Bridges deteriorate with time and use. To monitor deterioration of the bridges, several US Acts mandate the state and local governmental agencies (including cities, state transportation agencies, etc.) to perform regular bridge inspections. The aforementioned inspections across the nation, which have been conducted since 1970's (including our regio ...
  • Deep Learning Models and Tools for Disaster Evacuation and Routing
    Deep Learning Models and Tools for Disaster Evacuation and Routing
    Corns, Steven M ;
    Long, Suzanna K
    2022-12-01 | PDF
    Engineering managers and transportations planners need robust tools to communicate evacuation routing plans following disruptions from earthquake events. The project will use the New Madrid Seismic Zone in South-East Missouri as a testbed for modeling the response to an earthquake and aftershocks at Magnitude 8+. This area was chosen as it allows s ...
  • ODOT Radar System for RealTime Traffic Flow Monitoring
    ODOT Radar System for Real-Time Traffic Flow Monitoring
    Refai, Hazem H. ;
    Habib, Mohamed Ali
    2022-12-01 | PDF
    This report presents research results and experiments that were designed to compare four traffic systems: Radar, AVC, HERE, and INRIX in terms of speed, volume, and travel time. The first three chapters introduce the systems, related studies, data collection procedures, and preprocessing techniques. The second three chapters detail the comparison r ...
  • Performance Evaluation of Connected Vehicle CV and Transportation Systems Management and Operations TSMO Projects in Florida Summary
    Performance Evaluation of Connected Vehicle (CV) and Transportation Systems Management and Operations (TSM&O) Projects in Florida [Summary]
    Ponnaluri, Raj ;
    Alluri, Priyanka
    2022-12-01 | PDF
    Technology that connects human experience with artificial intelligence is increasingly reaching every sector of society - including Florida's transportation network. To stay ahead of this curve, the Florida Department of Transportation (FDOT) currently has 33 deployed projects that explore this interconnectivity through Connected Vehicle (CV) techn ...
  • Approaches for Assessing Flows, Concentrations, and Loads of Highway and Urban Runoff and Receiving-Stream Stormwater in Southern New England With the Stochastic Empirical Loading and Dilution Model (SELDM) [supporting dataset]
    Granato, Gregory E. ;
    Spaetzel, Alana B
    2022-11-30 | PDF
    The Stochastic Empirical Loading and Dilution Model (SELDM) was designed to help quantify the risk of adverse effects of runoff on receiving waters, the potential need for mitigation measures, and the potential effectiveness of such management measures for reducing these risks. SELDM is calibrated using representative hydrological and water-quality ...
    Dataset Supporting Files
  • Maintenance and Performance Study of Porous Asphalt in Northern Climates at the Randolph Park Ride
    Maintenance and Performance Study of Porous Asphalt in Northern Climates at the Randolph Park & Ride
    Miller, Tanya
    2022-11-22 | PDF
    Previous studies were conducted at the Randolph Park and Ride regarding the implementation and performance of porous concrete (PC) in northern climates. The studies examined field surface infiltration capacity, the effects of plowing on surface infiltration capacity and the PC implementation. The study concluded that PC surface infiltration was ade ...
  • Evaluation of Stripping Potential Tests for Bituminous Concrete
    Evaluation of Stripping Potential Tests for Bituminous Concrete
    KC, Bijay ;
    Khorasani, Ali
    2022-11-08 | PDF
    Pavement stripping due to loss in adhesion/binding between asphalt binder and aggregate in presence of moisture is a common and challenging pavement distress in wet climates such as Vermont. Although Vermont Agency of Transportation (VTrans) requires Hamburg Wheel Tracking Test (AASHTO T 324) during mix design approval, MRD-10 is required daily if ...
  • Quantifying Correlations Between Pavement Conditions and Snow and Ice Control Costs and Recalculating 20212022 Winter Performance Measures
    Quantifying Correlations Between Pavement Conditions and Snow and Ice Control Costs and Recalculating 2021-2022 Winter Performance Measures
    Sullivan, James L. ;
    Robinson, Mitchell
    2022-11-02 | PDF
    This project consisted of an analysis of the relationship between pavement quality and winter maintenance cost, and calculation of selected winter maintenance performance measures for the last 11 winter seasons. The project included obtaining the necessary data, gathering it into a GIS, and analyzing the relationship between pavement quality and wi ...
  • Evaluation of the Use of IRI Data to Estimate Bridge Dynamic Impact Factor DIF
    Evaluation of the Use of IRI Data to Estimate Bridge Dynamic Impact Factor (DIF)
    Liu, Zhengyu ;
    Phares, Brent M.
    2022-11-01 | PDF
    The objectives of this project were to correlate international roughness index (IRI) data (which are widely collected and directly related to bridge deck roughness) to impact factors and develop a process for determining the impact factor to use for all bridges in Iowa. To achieve the project objectives, a sample of 20 bridges was selected for brid ...
  • NJ Transit Grade Crossing Safety
    NJ Transit Grade Crossing Safety
    Zaman, Asim ;
    Alfaris, Ruqaya Emad
    2022-11-01 | PDF
    Grade crossings pose one of the most significant safety challenges for railroads and transit agencies across the United States (U.S.) and encompass 34% of railroad incidents in the past ten years. The elimination of grade crossings to reduce risk can improve public safety, decrease financial burdens, and improve service to the public. To improve gr ...
  • Assessment of Motorcycle Safety in Wyoming Fatal and Severe Crashes Contributing Factors and Potential Countermeasures
    Assessment of Motorcycle Safety in Wyoming: Fatal and Severe Crashes, Contributing Factors and Potential Countermeasures
    Zlatkovic, Milan ;
    Baah, Isaac
    2022-11-01 | PDF
    Motorcycle riders and passengers are much more likely to be killed or severely injured in a crash, and on average about 15 percent of all traffic fatalities include motorcyclists. The study uses 12 years of motorcycle crash data (2008-2019) from Wyoming on crash, vehicle and person levels, and applies multinomial logistic and Bayesian regression mo ...
  • USFCUTR I4 FRAME Project Before Study Data Collection and Analysis of Safety and Mobility Conditions Prior to Implementation
    USF-CUTR I-4 FRAME Project “Before” Study: Data Collection and Analysis of Safety and Mobility Conditions Prior to Implementation
    Lin, Pei-Sung ;
    Concas, Sisinnio
    2022-11-01 | PDF
    The Florida Department of Transportation (FDOT) created the Interstate 4 (I-4) Florida’s Regional Advanced Mobility Elements (FRAME) project to address safety and mobility issues on I-4 between Tampa and Orlando. The I-4 FRAME project aims to deploy an advanced integrated corridor management system consisting of advanced next-generation technologie ...
  • A Feasibility Study for Establishing A Regional Road Track Pavement Testing Facility in Wyoming
    A Feasibility Study for Establishing A Regional Road Track Pavement Testing Facility in Wyoming
    Hafez, Marwan ;
    Fosu-saah, Benjamin
    2022-11-01 | PDF
    This report discusses the benefits of full-scale pavement testing and the use of Accelerated Pavement Testing (APT) to collect pavement performance data under actual experimental conditions. The report highlights the development and operation of road test tracks, such as the Minnesota Road Research Project (MnROAD) and the National Center for Aspha ...
  • ThickLift Paving with Tamper Bar Pavers
    Thick-Lift Paving with Tamper Bar Pavers
    Wilson, Bryan ;
    Saca, Moises
    2022-11-01 | PDF
    This research studied thick-lift asphalt concrete construction using a tamper bar paver. Tamper bar pavers were deployed on three paving projects to place asphalt layers ranging from 6 to 10 inches thick. On each project, test sections were constructed in one and two lifts, evaluating different lift thicknesses, paver screed settings, and rolling p ...
  • Best Practices for Highway Project Scoping
    Best Practices for Highway Project Scoping
    Jasper, Jeff ;
    Wright, Samantha
    2022-11-01 | PDF
    One of the Kentucky Transportation Cabinet’s (KYTC) foremost priorities in fulfilling its mission is to deliver successful projects — quality solutions that meet the defined scope and are delivered on time and within the budget specified in the Highway Plan. When a project scope is not clearly defined or uncertain, revisions may take place after th ...
  • Estimating Corrosion of Embedded Steel Rebars in Bridge Structures Technical Summary
    Estimating Corrosion of Embedded Steel Rebars in Bridge Structures [Technical Summary]
    Pilarski, Paul ;
    Shafei, Behrouz
    2022-11-01 | PDF
    The goal of this project was to develop guidance and aids to enhance visual and other nondestructive methods of estimating reinforcement section loss. The guidance and aids would be developed specifically for standardized 2-inch concrete cover over reinforcement with 4,000 psi strength concrete.
  • Division of Planning Research OnCall Task 10 Deer Passage Through Rock Channel Protection RCP Designs and Options
    Division of Planning Research On-Call Task #10 - Deer Passage Through Rock Channel Protection (RCP) Designs and Options
    Sperry, Benjamin R. ;
    Bhattarai, Shristi
    2022-11-01 | PDF
    One safety-related issue that has been identified by ODOT is deer crashes. ODOT OES is proposing to install a "deer passage" within the rock channel protection (RCP) underneath highway bridges that would allow for the deer to pass under the highway instead of going across on the surface. The purpose of this research was to analyze the feasibility o ...
  • Development of Training Modules to Increase Usage and Understanding of AgencyWide Software Programs
    Development of Training Modules to Increase Usage and Understanding of Agency-Wide Software Programs
    Durham, Stephan A. ;
    Geum Chorzepa, Mi
    2022-11-01 | PDF
    The Georgia Department of Transportation (GDOT) e-construction initiatives utilize key software programs—ProjectWise, Bluebeam, and CATS—that currently lack adequate on-demand training. This study aims to develop innovative and engaging e-construction training programs to increase usage and understanding of ProjectWise, Bluebeam, and CATS across th ...
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