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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 4121 - 4140 of 36908 results
  • Evaluation of the Filtration Effectiveness of Dewatering Bags and Assessment of Potential Improvements
    Evaluation of the Filtration Effectiveness of Dewatering Bags and Assessment of Potential Improvements
    Lloyd, Lewis N.
    2021-04-21 | PDF
    Geotextile dewatering bags are used on construction sites to treat sediment-laden construction discharge water pumped from excavations or behind cofferdams. Although these bags have become popular because of their small footprint on the construction site, recent observations have revealed that in some cases, fine sediment can pass through these bag ...
  • Proactive Management of Mobility Impact of Interdependent Subsurface Utility and Roadway Construction through Incentives
    Proactive Management of Mobility Impact of Interdependent Subsurface Utility and Roadway Construction through Incentives
    Zhang, Zhuoran ;
    Akinci, Burcu
    2021-04-14 | PDF
    This study aims to assist maintenance agencies in scheduling maintenance activities when assessing the impacts of conducting maintenance on a bridge and the cost of the detour, and the risk of crashes during the presence of the maintenance activity. Firstly, the authors build a predictive infrastructure maintenance expenditure model that predicts t ...
  • Fly-By Image Processing for Real-Time Congestion Mitigation [supporting datasets]
    Uddin, Nasim ;
    Latef, Abdel Aziz Abdel
    2021-04-14 | PDF
    Traffic monitoring is the centerpiece of congestion mitigation and traffic management. Whilst surveillance technologies have matured enough to provide informative depiction for the traffic, the current state-of-the-art systems cannot support immediate congestion problems. Proactive congestion mitigation requires a) real-time surveillance for traffi ...
    Dataset Supporting Files
  • Replacement of SDDOTs Roadway Evaluation System
    Replacement of SDDOT’s Roadway Evaluation System
    Bauer, Thad
    2021-04-13 | PDF
    The South Dakota Department of Transportation (SDDOT) Office of Transportation Inventory Management operates a road and pavement evaluation system consisting of a vehicle equipped with roadway evaluation equipment and computers at the SDDOT central office to process data collected by the vehicle. This system acquires roadway and pavement images, pa ...
  • Laboratory Tests on Scaled Steel Fin Pile Foundations
    Laboratory Tests on Scaled Steel Fin Pile Foundations
    Prabhu, S ;
    Te, P
    2021-04-09 | PDF
    The use of steel fin pile foundations (SFPFs) for offshore structures and their efficiency in increasing the lateral load capacity compared to unfinned piles has been extensively studied. Recently, SFPFs were introduced in the field of transportation engineering for supporting structures including signs, signals, etc. In these applications, foundat ...
  • Correlation of Slag Cement Composition with Durability of Portland CementSlag Concrete
    Correlation of Slag Cement Composition with Durability of Portland Cement–Slag Concrete
    Zayed, Abla ;
    Riding, Kyle
    2021-04-01 | PDF
    Three ordinary portland cements (OPC), three limestone cements (IL), and seven ground granulated blast furnace slags (GGBFS/slag) were used to investigate the heat generation, adiabatic temperature rise, sulfate optimization, sulfate durability (external and internal), and chloride durability in slag-blended cementitious systems. The as-received ma ...
  • Software and Hardware Systems for Autonomous Smart Parking Accommodating Both Traditional and Autonomous Vehicles
    Software and Hardware Systems for Autonomous Smart Parking Accommodating Both Traditional and Autonomous Vehicles
    Al Faruque, Mohammad Abdullah ;
    Odema, Mohanad
    2021-04-01 | PDF
    Parking infrastructure is suffering from congestion as the number of vehicles circulating in urban areas is growing and expansion is not a cost-effective solution. In parallel, developments in autonomous vehicle technology mean that driverless vehicles are predicted to be in circulation by the 2020s and makeup 40% of vehicle travel by the 2040s. Ex ...
  • Laboratory and Field Performance Evaluation of Pavement Sections With High PolymerModified Asphalt Overlays
    Laboratory and Field Performance Evaluation of Pavement Sections With High Polymer-Modified Asphalt Overlays
    Habbouche, Jhony ;
    Boz, Ilker
    2021-04-01 | PDF
    In 2014, researchers at the Virginia Transportation Research Council initiated a study to evaluate the effectiveness of using high polymer-modified (HP) binders in surface asphalt concrete (AC) mixtures. The results were promising enough to support a field study investigating the use of HP binders in asphalt mixtures over jointed concrete pavement. ...
  • Coordinated AntiCongestion Control Algorithms for Diverging Diamond Interchanges
    Coordinated Anti-Congestion Control Algorithms for Diverging Diamond Interchanges
    Coogan, Sam ;
    Thitsa, Makhin
    2021-04-01 | PDF
    The main objective of this research project is to develop data-driven traffic prediction and control algorithms for congestion management of diverging diamond interchanges (DDIs) and their surroundings. The project proposes an algorithm that leverages recent advances in data-driven modeling, namely, partial least squares multivariate regression, in ...
  • Division of Planning Research on Call ROC Task 5 Effective EJ and LEP Engagement Strategies and Methods for Statewide Plans
    Division of Planning Research on Call (ROC) Task 5: Effective EJ and LEP Engagement Strategies and Methods for Statewide Plans
    Daniels, Susan ;
    Anacki, Abby
    2021-04-01 | PDF
    Transportation agencies often struggle engaging environmental justice (EJ) and low English proficiency (LEP) populations in their public involvement efforts. This issue becomes worsened when the public involvement if for statewide plans or projects, an already difficult task for public engagement as a whole. This research aims to determine the best ...
  • Structural Design Methodology for Spray Applied Pipe Liners in Gravity Storm Water Conveyance Conduits
    Structural Design Methodology for Spray Applied Pipe Liners in Gravity Storm Water Conveyance Conduits
    Najafi, Mohammad ;
    Yu, Xinbao
    2021-04-01 | PDF
    To reduce high cost of emergency repairs and disruptions to travelling public, and prior to loss of host pipe integrity and soil-structure interaction, departments of transportations (DOTs) can use polymeric or cementitious/geopolymer spray applied pipe linings (SAPLs) to renew deteriorated gravity storm conduits and culverts. The AASHTO – National ...
  • Development of a Connected Smart Vest for Improved Roadside Work Zone Safety
    Development of a Connected Smart Vest for Improved Roadside Work Zone Safety
    Roofigari-Esfahan, Nazila ;
    White, Elizabeth
    2021-04-01 | PDF
    Roadside work zones (WZs) present imminent safety threats for roadway workers as well as passing motorists. In 2016, 764 fatalities occurred in WZs in the United States due to motor vehicle traffic crashes. A number of factors (aging highway infrastructure, increased road work, increased levels of traffic and more nighttime WZs) have led to an incr ...
  • Implementation Phase of SPR 777 Study and Guidance for a Chip Seal Performance Specification
    Implementation Phase of SPR 777 Study and Guidance for a Chip Seal Performance Specification
    Buss, Ashley ;
    Guirguis, Minas
    2021-04-01 | PDF
    This report outlines the development and implementation phase of chip seal performance specification for Oregon. Two chip seal workshops were held to involve chip seal stakeholders including a variety of Oregon Department of Transportation (ODOT) personnel and contractors. A voluntary survey about the potential specification changes was developed a ...
  • SelfDriving Electric Vehicles for Smart and Sustainable Mobility Evaluation and Feasibility Study for Educational and Medical Campuses
    Self-Driving Electric Vehicles for Smart and Sustainable Mobility: Evaluation and Feasibility Study for Educational and Medical Campuses
    Sadek, Adel W ;
    Qiao, Chunming
    2021-04-01 | PDF
    Automated Vehicles (AVs) have the potential to improve transportation safety, increase system capacity, enhance mobility, and solve the first- and last- mile problem associated with public transportation. This project has three interrelated objectives: (1) to evaluate the technical feasibility, safety and reliability of a low-speed, self-driving sh ...
  • Translating Data Generated by the Transit App into Insights on Transportation Use in Greater Boston
    Translating Data Generated by the Transit App into Insights on Transportation Use in Greater Boston
    O'Brien, Daniel T ;
    Wang, Qi
    2021-04-01 | PDF
    Transit is an app that Massachusetts Bay Transit Authority (MBTA) riders can use to navigate the system and compare alternative routes. The data generated by the app are made available to MBTA by Transit and they are a rich resource for understanding the behavior of customers. The purpose of this project was to tap this unprecedented resource throu ...
  • Protecting Piers of Overhead Structures from Degradation Due to Snow and Ice Chemical and Material Usage Phase II
    Protecting Piers of Overhead Structures from Degradation Due to Snow and Ice Chemical and Material Usage Phase II
    Miller, Richard ;
    Nepal, Prateek
    2021-04-01 | PDF
    Chloride laden ice and snow thrown from plows can adhere to bridge piers. Eventually the chlorides migrate into the concrete and cause corrosion. This report looks at two methods of protecting bridge piers. One is a polyethylene shield and the other is a polyaspartic coating. The polyethylene shields were easy to install and could be removed for in ...
  • Development of Standard Methodology to Measure Sulfate Ions in PostTensioned Grouts
    Development of Standard Methodology to Measure Sulfate Ions in Post-Tensioned Grouts
    Permeh, Samanbar ;
    Lau, Kingsley
    2021-04-01 | PDF
    Steel corrosion in the deficient grout however was associated with elevated concentrations of sulfate ions stemming from the adverse influence of excess mix water and grout pre-hydration. There has been discussions for appropriate ways to address sulfate levels in grout including sulfate limits. Various test methodologies can include varying materi ...
  • Roadside RightsofWay As Pollinator Habitat A Literature Review
    Roadside Rights-of-Way As Pollinator Habitat: A Literature Review
    Du Clos, Brianne ;
    deMaynadier, Phillip
    2021-04-01 | PDF
    This report includes a review of peer-reviewed academic and non-peer reviewed gray literature describing ROW management practices and their effects on pollinator populations, focusing on applications of these practices in landscapes similar to those found in Maine and the northeast United States; that is, landscapes that are heavily forested and in ...
  • Associating Ridesourcing With Road Safety Outcomes Insights From Austin Texas
    Associating Ridesourcing With Road Safety Outcomes: Insights From Austin, Texas
    Kontou, Eleftheria ;
    McDonald, Noreen
    2021-04-01 | PDF
    Improving road safety and setting targets for reducing traffic-related crashes and deaths are highlighted as part of the United Nation's sustainable development goals and worldwide vision zero efforts. The advent of transportation network companies, such as ridesourcing, expands mobility options in cities and may impact road safety outcomes. We ana ...
  • Biopolymerized SlopeSubgrade Stabilization and Advanced Field Monitoring
    Biopolymerized Slope/Subgrade Stabilization and Advanced Field Monitoring
    Song, Chung R. ;
    Bitar, Layal
    2021-04-01 | PDF
    The slightly overconsolidated glacial tills and weathered shales in Midwestern states of the USA often show substantial strength degradation after construction. This strength reduction often causes time dependent slope failures along the roadside. This study investigated the possibility of applying biopolymer based soil modification techniques to m ...
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