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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 8041 - 8060 of 36151 results
  • Unmanned aircraft system bridge inspection demonstration project phase II final report
    Unmanned aircraft system bridge inspection demonstration project phase II final report.
    Wells, Jennifer ;
    Lovelace, Barritt
    2017-06-01 | PDF
    An Unmanned Aircraft System (UAS) is defined by the Federal Aviation Administration (FAA) as an aircraft operated without the possibility of direct human intervention from within the aircraft. Unmanned aircraft are familiarly referred to as drones, and the names can be used interchangeably. The UAS is controlled either autonomously or with the use ...
  • MnROAD cells 1623 phase II forensic investigation into recycled unbound base and asphalt surface materials
    MnROAD cells 16-23 (phase II) : forensic investigation into recycled unbound base and asphalt surface materials.
    Ahn, Hyung Jun ;
    Hanson, Chelsea
    2017-06-01 | PDF
    This report presents the findings from an eight-year performance evaluation of eight cells (Cells 16-23) built at the Minnesota Road Research Facility (MnROAD) in 2008. The constructed cells were used for two performance evaluation studies of: 1) unbound base materials (i.e., recycled asphalt pavement (RAP), recycled concrete aggregate (RCA), and t ...
  • Sidewalk Survey Implementation for the Southeast Region Project 2016010
    Sidewalk Survey Implementation for the Southeast Region (Project 2016-010)
    Guensler, Randall ;
    Boyer, David
    2017-06-01 | PDF
    With funding from the Georgia Department of Transportation (GDOT) and the Southeastern Transportation Research, Innovation, Development, and Education Center (STRIDE), the team deployed the Online Sidewalk Assessment Survey to gather input on local sidewalk repair and maintenance preferences across a variety of community types in the southeast. The ...
  • Neural Correlates of Older Driver Performance
    Neural Correlates of Older Driver Performance
    Noyce, David A. ;
    Chitturi, Madhav V.
    2017-06-01 | PDF
    Driving simulators have been used in several studies to assess the performance of older drivers. One common finding in these studies was that driving skills generally decline with age. These studies have also concluded that there are different levels of visual attention skill that can be recognized among older drivers using neuropsychological tests ...
  • Signal Timing Optimization with Consideration of Environmental and Safety Impacts Part A Estimation of Environmental Impacts
    Signal Timing Optimization with Consideration of Environmental and Safety Impacts, Part A: Estimation of Environmental Impacts
    Hadi, Mohammed ;
    Elefteriadou, Lily
    2017-06-01 | PDF
    This study aims at developing models that relate pollutant emissions to macroscopic mobility measures, which can be estimated using macroscopic/mesoscopic analysis tools or can be measured using sensors in the real world. Such models can be used in signal optimization tools to allow the optimization of signal timings based on emission, combined wit ...
  • Determination of mechanical properties for cementtreated aggregate base final report
    Determination of mechanical properties for cement-treated aggregate base : final report.
    Hossain, M. Shabbir ;
    Nair, Harikrishnan
    2017-06-01 | PDF
    The Virginia Department of Transportation (VDOT) currently follows pavement design procedures for all new and rehabilitated pavements based on the 1993 AASHTO Guide for Design of Pavement Structures. VDOT’s Materials Division is in the process of implementing the Mechanistic-Empirical Pavement Design Guide (MEPDG) procedure via AASHTOWare Pavement ...
  • Optimal Charging Scheduler for Electric Vehicles on the Florida Turnpike
    Optimal Charging Scheduler for Electric Vehicles on the Florida Turnpike
    Qu, Zhihua ;
    Gusrialdi, Azwirman
    2017-06-01 | PDF
    This project developed a methodology to simulate and analyze roadway traffic patterns and expected penetration and timing of electric vehicles (EVs) with application directed toward the requirements for electric vehicle supply equipment (EVSE) siting and purchasing/leasing at turnpike plazas. The project also developed a wirelesscommunication-based ...
  • Drivers attitudes and behaviors toward bicyclists intermodal interactions and implications for road safety
    Drivers’ attitudes and behaviors toward bicyclists : intermodal interactions and implications for road safety.
    Goddard, Tara Beth
    2017-06-01 | PDF
    Road safety concerns are a legitimate concern when promoting increased bicycle use. Currently, bicyclist traffic fatalities and injuries present both a public health concern and a disincentive to people taking up or continuing to bicycle for transportation. Bicycling is not an inherently a dangerous activity; automobile drivers pose the most risk o ...
  • Characterization of Passing Ability of Concrete in CIDH Piles with Wet Conditions
    Characterization of Passing Ability of Concrete in CIDH Piles with Wet Conditions
    Sun, Jeffery ;
    Shing, Benson
    2017-06-01 | PDF
    In the presence of ground water or caving soils, the slurry displacement method may be used to place concrete for CIDH piles to ensure the stability of the drilled hole. As concrete is placed under slurry, anomalies may occur around the reinforcement, affecting the structural integrity of the pile. Hence, the construction of CIDH piles under wet co ...
  • Design considerations for embankment protection during road overtopping events final report
    Design considerations for embankment protection during road overtopping events : final report.
    Marr, Jeffrey D. G. ;
    Hernick, Matthew
    2017-06-01 | PDF
    This report describes the research conducted by the University of Minnesota and project partners on roadway embankment overtopping by flood water. Roadway overtopping is a major safety concern for Minnesota transportation managers because of the potential for rapid soil erosion and mass wasting resulting in partial or complete failure of the roadwa ...
  • Impact of low asphalt binder for coarse HMA mixes final report
    Impact of low asphalt binder for coarse HMA mixes : final report.
    Dave, Eshan V. ;
    DeCarlo, Christopher
    2017-06-01 | PDF
    Asphalt mixtures are commonly specified using volumetric controls in combination with aggregate gradation limits, like most transportation agencies, MnDOT also uses this approach. Since 2010 onward, several asphalt paving projects for MnDOT have been constructed using coarser asphalt mixtures that are manufactured with lower total asphalt binder co ...
  • Technology Transfer Distracted Driving Overview Summary of Ways to Alleviate
    Technology Transfer: Distracted Driving, Overview Summary of Ways to Alleviate
    Peters, Robert ;
    Stavrinos, Despina
    2017-06-01 | PDF
    This comprehensive report provides final findings from a technology transfer project aimed to describe the state-of-the-art addressing prevention efforts for distraction, particularly with regard to infrastructure solutions. The specific tasks for this project were as follows: Task 1) Conduct an extensive literature review related to infrastructure ...
  • Foothill Transit Battery Electric Bus Demonstration Results Second Report
    Foothill Transit Battery Electric Bus Demonstration Results : Second Report
    Eudy, Leslie ;
    Jeffers, Matthew
    2017-06-01 | PDF
    This report summarizes results of a battery electric bus (BEB) evaluation at Foothill Transit, located in the San Gabriel and Pomona Valley region of Los Angeles County, California. Foothill Transit began a demonstration of three Proterra BEBs in October 2010 to evaluate the battery technology and determine if the BEBs could meet Foothill Transit’s ...
  • Take your STIC to the Next Level Best Practices Examples and Resources
    Take your STIC to the Next Level: Best Practices, Examples, and Resources
    United States. Federal Highway Administration
    2017-06-01 | PDF
    State Transportation Innovation Councils (STICs) use different approaches to selecting, deploying, communicating, and institutionalizing innovations within each State. Sharing these different approaches and learning what others are doing is the heart of the National STIC Network. This document highlights several shared best practices, along with de ...
  • Human Factors Guidelines to Develop Educational Tip Cards for Aging Road Users Final Report
    Human Factors Guidelines to Develop Educational Tip Cards for Aging Road Users [Final Report]
    Charness, Neil ;
    Boot, Walter
    2017-06-01 | PDF
    Our objective was to provide empirically supported guidelines and templates for the design of tip cards and other public service transportation materials to educate aging road users on traffic control devices. Task 1 identified relevant theories and data concerning the design of public service materials. We used this literature review to provide gu ...
  • Exploring Applications for Unmanned Aerial Systems UAS and Unmanned Ground Systems UGS in Enhanced Incident Management Bridge Inspection and Other Transportation Related Operations Final Report
    Exploring Applications for Unmanned Aerial Systems (UAS) and Unmanned Ground Systems (UGS) in Enhanced Incident Management, Bridge Inspection, and Other Transportation Related Operations: Final Report
    Kamga, Camille ;
    Sapphire, Joah
    2017-06-01 | PDF
    Unmanned aircraft systems (UAS) and unmanned ground systems (UGS) have the potential to change the way we perform some of transportation-related operations. Nowadays, opportunity arises to leverage various innovative technological capabilities to explore their use and value in real wor1d operating environments. Specifically, exploring the capabilit ...
  • Development of Support Systems Instructional Modules and a Case Study for the Enhanced Driving Simulator at the Gator Tech Smart House
    Development of Support Systems, Instructional Modules, and a Case Study for the Enhanced Driving Simulator at the Gator Tech Smart House
    Srinivasan, Sivaramakrishnan ;
    Rogers, Jason
    2017-06-01 | PDF
    The Driving Simulator Lab was founded in early 2005 was upgraded in Fall 2016 with a new system from Realtime Technologies Inc. (RTI). The upgrades to the lab was made with the vision of serving as a critical tool to enhancing our understanding of the human-vehicle interactions. The lab will provide for a safe and flexible environment in which alte ...
  • Route 139 rehabilitation Pulaski Skyway contract 2 technical brief
    Route 139 rehabilitation: Pulaski Skyway contract 2 : technical brief.
    Nassif, Hani
    2017-06-01 | PDF
    This study addressed the need for an aesthetically pleasing historic concrete balustrade design alternative for the Pulaski Skyway in Jersey City, Hudson County. In this study, a crashworthy design was developed according to AASHTO Section 13 specifications and was modeled using the nonlinear transient dynamic finite element analysis software, LS-D ...
  • Design and Investigation of a FuelFlexible Injection System for LowEmission Vehicles
    Design and Investigation of a Fuel-Flexible Injection System for Low-Emission Vehicles
    Jiang, Lulin ;
    Akinyemi, Oladapo S
    2017-06-01 | PDF
    The transportation sector represented 27% of total U.S. greenhouse gas (GHG) emissions, all from fuel combustion, in 2013 according to the U.S. Greenhouse Gas Inventory Report: 1990-2013. The National Science Foundation (NSF) and Department of Energy (DOE) have urged researches on clean and efficient vehicles facing the ever increasing energy deman ...
  • Analysis of safety impacts of access management alternatives using the surrogate safety assessment model final report
    Analysis of safety impacts of access management alternatives using the surrogate safety assessment model : final report.
    Saito, Mitsuru ;
    Schultz, Grant G.
    2017-06-01 | PDF
    The purpose of this study was to evaluate if the Surrogate Safety Assessment Model (SSAM) could be used to assess the safety of a highway segment or an intersection in terms of the number and type of conflicts and to compare the safety effects of multiple access management alternatives with less time, less cost, and less uncertainty than the tradit ...
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