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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 6001 - 6020 of 36958 results
  • Development and Implementation of Sustainable Transportation Resilience Indicators
    Development and Implementation of Sustainable Transportation Resilience Indicators
    Abkowitz, Mark ;
    Camp, Janey
    2019-07-01 | PDF
    Communities are complex systems subject to a variety of hazards that can result in significant disruption to critical functions. Community resilience assessment is gaining popularity as a means to help communities better prepare for, respond to, and recover from disruption. Sustainable resilience, a recently developed concept, requires communities ...
  • Structural Health Monitoring of Highway Bridges Subjected to Overweight Vehicles Phase II Field Deployment
    Structural Health Monitoring of Highway Bridges Subjected to Overweight Vehicles, Phase II – Field Deployment
    Judd, Johnn ;
    Barker, Michael
    2019-07-01 | PDF
    This report describes Phase II of a research project to develop a structural health monitoring system for highway bridges subjected to overweight trucks. Two field tests were conducted. The Laramie River bridge, located at mile post (MP) 312.33, on Interstate-80 (I-80), in Laramie, Wyoming, was tested to evaluate bridge behavior and to develop a pr ...
  • Using Information at Different Spatial Scales to Estimate Demand to Support Asset Management Decision Making
    Using Information at Different Spatial Scales to Estimate Demand to Support Asset Management Decision Making
    Jahan, Israt ;
    McNeil, Sue
    2019-07-01 | PDF
    Quantifying disaster recovery is important to be able to match resources to needs. The research explores the use of survey data, FEMA assessment data, aerial photographs and LIDAR data in the context of recovery from 2012 Hurricane Sandy in Sea Bright, New Jersey. The data cover the period 2010 to 2015. Each of the data sources differ in terms of c ...
  • Identifying Highly Correlated Variables Relating to the Potential Causes of Reportable Wisconsin Traffic Crashes
    Identifying Highly Correlated Variables Relating to the Potential Causes of Reportable Wisconsin Traffic Crashes
    Qin, Xiao ;
    Shaon, Mohammad Razaur Rahman
    2019-07-01 | PDF
    The goal of this research project is to provide the Wisconsin Department of Transportation (WisDOT) with the state of art methodologies for identifying the most pertinent behavioral and engineering variables relating to reportable crashes. In this regard, an extensive literature review has been performed to summarize the latest progress in crash mo ...
  • Issues Pertaining to Rebuilt Vehicle Titles
    Issues Pertaining to Rebuilt Vehicle Titles
    Keathley, Valerie ;
    Martin, Andrew
    2019-07-01 | PDF
    In Kentucky, salvage titles are issued when a vehicle has been wrecked, destroyed, or damaged and the cost of repairs exceeds 75 percent of the vehicle’s fair market value. Once a vehicle is repaired to roadworthy condition it is issued a rebuilt title. Kentucky issued 110,000 rebuilt and salvage titles in 2018. Over the 2014 to 2018 period, the nu ...
  • Seismic Performance of Circular Concrete Filled Steel Tube Columns for Accelerated Bridge Construction
    Seismic Performance of Circular Concrete Filled Steel Tube Columns for Accelerated Bridge Construction
    Tucker, Catherine ;
    Ibarra, Luis
    2019-07-01 | PDF
    This study evaluates the seismic performance of circular concrete-filled tube (CCFT) columns in accelerated bridge construction (ABC) projects. CCFT components are considered of interest for bridges subjected to seismic forces due to their efficient structural behavior under combined axial and bending loads: lateral stiffness of the steel tube is i ...
  • Development of Load Rating Procedures for Deteriorated Steel Beam Ends Deliverable 4 Final Report
    Development of Load Rating Procedures for Deteriorated Steel Beam Ends: Deliverable 4: Final Report
    Tzortzinis, Georgios ;
    Gerasimidis, Simos
    2019-07-01 | PDF
    This study focuses on the current strength evaluation policies for strength assessment of corroded steel girders and investigates potential improvements based on real corrosion data. The research work included in this report has three phases. First, the current deterioration condition of steel bridges is studied through MassDOT inspection reports o ...
  • Investigation of Delta Tc for Implementation in Indiana
    Investigation of Delta Tc for Implementation in Indiana
    McDaniel, Rebecca S. ;
    Shah, Ayesha
    2019-07-01 | PDF
    The current Superpave asphalt binder specifications do not address durability issues and do not adequately address fatigue. Several approaches have been proposed by different researchers to address both these durability issues. Some of the proposed refinements are quite complex, but one, ΔTc (delta Tc), is gaining favor because it is computationall ...
  • Roadway Kinetic Energy Capture and Conversion Phase 1
    Roadway Kinetic Energy Capture and Conversion, Phase 1
    Kaya, Savas ;
    Nazzal, Munir D.
    2019-07-01 | PDF
    Alternative energy generating assets, such as solar, piezoelectric, electrostatic and electrodynamic generators and wind turbines in and along the highways can capture and convert otherwise wasted ambient energy, which may provide an opportunity to reduce cost, prepare for future needs and even generate revenue. In this Phase-1 project, a review of ...
  • Structural Coefficient for High Polymer Modified Asphalt Mixes Summary
    Structural Coefficient for High Polymer Modified Asphalt Mixes [Summary]
    Sebaaly, Peter E.
    ORCID ICON IMG
    2019-07-01 | PDF
    University of Nevada, Reno (UNR), researchers determined the structural coefficient for asphalt concrete mixes manufactured with a high polymer (HP) modified asphalt binder that contains approximately 7.5% Styrene-Butadiene-Styrene (SBS) polymer.
  • Characterizing The Trip Generation Profiles Of Multifamily Housing
    Characterizing The Trip Generation Profiles Of Multifamily Housing
    Clifton, Kelly J. ;
    Currans, Kristina M.
    2019-07-01 | PDF
    Cities are increasingly wanting to assess the impacts new development has on all modes in the transportation system. Many communities are requiring site-level transportation impact analysis to examine travel outcomes. The historical focus on developing data and methods exclusively for the automobile, such as the Institute of Transportation Engineer ...
  • Performance Evaluation of Typical UDOT Surface Treatments
    Performance Evaluation of Typical UDOT Surface Treatments
    Romero, Pedro ;
    Bao, Shuangli
    2019-07-01 | PDF
    Fourteen Thin-Lift Treatments (TLTs) in UDOT’s Region 2 were evaluated over a five-year period in order to assess their performance. Surface distress data was quantified using Pavement Condition Indices (PCIs) and Remaining Service Life (RSL) were estimated following procedures utilized by UDOT. With the first 5 years’ evaluation, 2 TLTs sections h ...
  • Teen Driver Support System Technology Transfer
    Teen Driver Support System Technology Transfer
    Davis, Brian
    2019-07-01 | PDF
    The Teen Driver Support System (TDSS) is a smartphone application designed to provide real-time, in-vehicle feedback to novice drivers about their driving behavior to help them make safer driving decisions. The app provides warnings to the driver using in-phone sensors and maps to determine when the driver engages in in risky behavior. TDSS was eva ...
  • The Unresolved Relationship between Street Trees and Road Safety
    The Unresolved Relationship between Street Trees and Road Safety
    Marshall, Wesley E. ;
    Golombek, Yaneev
    2019-07-01 | PDF
    The roadside area where fixed-object hazards are explicitly minimized is called the clear zone, which became standard design practice soon after the 1966 Congressional hearings on road and automobile safety. Mounting evidence, however, is beginning to cast doubt on what we think we know about the impact of roadside clear zones on actual safety outc ...
  • Dynamic Flashing Yellow Arrow FYA A Study on Variable Left Turn Mode Operational and Safety Impacts Phase III Summary
    Dynamic Flashing Yellow Arrow (FYA) – A Study on Variable Left Turn Mode Operational and Safety Impacts – Phase III [Summary]
    Abou-Senna, Hatem
    2019-07-01 | PDF
    University of Central Florida researchers continued a project to increase the effectiveness of FYA signals by developing hardware that can interface with a wide variety of controllers and software to automatically select left-turn modes, in real time, based on gaps in opposing traffic and using existing sensors.
  • Evaluation of Recycled Base Aggregates
    Evaluation of Recycled Base Aggregates
    Titi, Hani H. ;
    Tabatabai, Habib
    2019-07-01 | PDF
    This study intended to provide quantitative evaluation of the use of RAP and RCA as base layers in HMA pavements. The study used field and laboratory testing programs and data from WisDOT PIF database quantify the performance of base materials and test sections on pavements with CA, RCA, and RAP base layers. Analysis of the particle size distributi ...
  • Rapid Retrofit and Strengthening of Bridge Components
    Rapid Retrofit and Strengthening of Bridge Components
    Peiris, Abheetha ;
    Harik, Issam E.
    2019-07-01 | PDF
    Rapid repair of damaged or deteriorated concrete bridge components will prevent the entire bridge from suffering irreversible damage in the future due to gradual spalling of concrete or corrosion of exposed steel. CFRP laminates and fabrics have become popular for repairing and strengthening of concrete girders. A series of CFRP materials — branded ...
  • Edge Drain Performance
    Edge Drain Performance
    Ashurst, Kean H.
    2019-07-01 | PDF
    Edge drain systems are used on new highway construction projects and rehabilitation projects to reduce the moisture content of the pavement block and subgrade. Maintaining dry conditions in and around these components increases the subgrade strength and extends a pavement’s surface life. Edge drain systems can only operate effectively, however, if ...
  • Evaluation of Asphalt Mixtures Containing Recycled Asphalt Shingles Tech Summary
    Evaluation of Asphalt Mixtures Containing Recycled Asphalt Shingles [Tech Summary]
    Mohammad, Louay ;
    Cooper, Samuel B. III
    2019-07-01 | PDF
    Asphalt binder prices are at an all-time high with no relief in sight. With the asphalt mixtures prices continuously climbing, highway agencies and owners are continually searching for methods to decrease material costs and maximize their benefits without compromising performance. One such method is to develop innovative technologies to incorporate ...
  • ITS Support for Pedestrians and Bicyclists Count Developing a Statewide Multimodal Count Program
    ITS Support for Pedestrians and Bicyclists Count: Developing a Statewide Multimodal Count Program
    Codjoe, Julius ;
    Holamoge, Yoshita
    2019-07-01 | PDF
    It is critical to understand the travel behavior of pedestrians and cyclists on Louisiana’s roadways. Not only do pedestrian and cyclist counts assist in research for safety, but these statistics are also essential for planners and policymakers when evaluating the usage of roadways and dictating infrastructure spending. Better understanding of over ...
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