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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 8061 - 8080 of 36151 results
  • Interpersonal communication and issues for autonomous vehicles
    Interpersonal communication and issues for autonomous vehicles.
    Stanciu, Sergiu C. ;
    Eby, David W.
    2017-06-01 | PDF
    Interpersonal roadway communication is a vital component of the transportation system. Road users communicate to coordinate movement and increase roadway safety. Future autonomous vehicle research needs to account for the role of interpersonal roadway communication. This literature review synthesizes research on interpersonal interaction between dr ...
  • Geosynthetics Specifications and Applications for Arizona
    Geosynthetics : Specifications and Applications for Arizona
    Kroening, Jennifer R. ;
    Darmiento, Frank
    2017-06-01 | PDF
    The purpose of this Arizona Department of Transportation (ADOT) research study was (1) to update the ADOT geosynthetic specifications for geogrids, geotextiles, geomembranes, and composites; and (2) to recommend design guidelines for using geosynthetics for base reinforcement and subgrade stabilization. The study included a survey of other states r ...
    Supporting Files
  • Empirical deck for phased construction and widening summary
    Empirical deck for phased construction and widening [summary].
    Elsafty, Adel
    2017-06-01 | PDF
    The most common method used to design and analyze bridge decks, termed the traditionalmethod, treats a deck slab as if it were made of strips supported by inflexible girders. Analternative – the empirical method – treats the deck slab as a unit that resists load primarilythrough internal arching action. The mechanics of the empirical method are mor ...
  • Imputing missing data via sparse reconstruction techniques
    Imputing missing data via sparse reconstruction techniques.
    Caramanis, Constantine
    2017-06-01 | PDF
    The State of Texas does not currently have an automated approach for estimating volumes for links without counts. This research project proposes the development of an automated system to efficiently estimate the traffic volumes on uncounted links, in the event of rare disturbances of the typical traffic flow. The idea we plan to leverage is that th ...
  • LTRC Annual Research Program Fiscal Year July 1 2017 June 30 2018
    LTRC Annual Research Program : Fiscal Year July 1, 2017 - June 30, 2018.
    Louisiana Transportation Research Center
    2017-06-01 | PDF
    FHWA Part II SPR Research Program FAP Number SPR-0010(34) & FHWA Funded Research Program & FHWA LTAP Funded Program & FHWA STP Funded Program & Federal & Self-Generated Funded Research Program & Other DOTD Funded Projects
  • WeedSuppressive Soil Bacteria to Reduce Cheatgrass and Improve Vegetation Diversity on ITD RightsofWay
    Weed-Suppressive Soil Bacteria to Reduce Cheatgrass and Improve Vegetation Diversity on ITD Rights-of-Way
    Kennedy, Ann C.
    2017-06-01 | PDF
    Transportation departments are challenged by the invasion of downy brome (cheatgrass) and medusahead. The reduction of downy brome (cheat grass) by Weed Suppressive Bacteria (WSB) Pseudomonas fluorescens strain ACK55 was evaluated on roadsides of I-84, I-86 and US-95 in Idaho. Bacteria were produced and sprayed on 1-acre plots at eleven locations a ...
  • An analysis of the benefits of using underground tanks for the storage of stormwater runoff generated at Virginia Department of Transportation maintenance facilities
    An analysis of the benefits of using underground tanks for the storage of stormwater runoff generated at Virginia Department of Transportation maintenance facilities.
    Fitch, G. Michael ;
    Gillespie, James S.
    2017-06-01 | PDF
    The Virginia Department of Transportation (VDOT) collects millions of gallons of runoff at its nearly 300 salt storagefacilities each year, with some portion of this water being reused for the generation of salt brine. Storing this collected stormwaterrunoff in tanks rather than ponds affords some advantages in that less water is collected; the wat ...
  • MnDOT Library strategic plan final report
    MnDOT Library strategic plan : final report.
    Bedor, Kathleen
    2017-06-01 | PDF
    MnDOT’s Senior Leadership asked MnDOT Library to develop a Strategic Plan that identifies and reviews the challenges facing the Library over the next five years to better address the evolving needs of the department and users. The strategic plan is intended to provide guidance to create the library of the future for MnDOT, by adapting emerging tech ...
  • Semiautonomous parking for enhanced safety and efficiency
    Semi-autonomous parking for enhanced safety and efficiency.
    Vishwanath, Sriram
    2017-06-01 | PDF
    This project focuses on the use of tools from a combination of computer vision and localization based navigation schemes to aid the process of efficient and safe parking of vehicles in high density parking spaces. The principles of collision avoidance, simultaneous localization and mapping together with vision based actuation in robotics will be us ...
  • Human Factors Guidelines to Develop Educational Tip Cards for Aging Road Users summary
    Human Factors Guidelines to Develop Educational Tip Cards for Aging Road Users [summary]
    Charness, Neil
    2017-06-01 | PDF
    Since standardization of traffic signals and signs across the U.S. began in the 1930s, research and experience have led to many changes, based on the effects, both intended and unintended, of traffic control devices. For example, in recent years, many left-turning drivers have seen the Flashing Yellow Arrow (FYA) for the first time. The FYA has the ...
  • Use of electronic fare transaction data for corridor planning
    Use of electronic fare transaction data for corridor planning.
    Hallenbeck, Mark E. ;
    Howard, Eric
    2017-06-01 | PDF
    This report documents the initial phase of a project that developed, tested, and used a methodology and tool set for converting electronic transit agency fare card transaction data, the Puget Sound region’s ORCA electronic fare card, into information that describes how customers are using the transit system. The project used two nine week datasets. ...
  • Using Security Cameras to Count Transit Passengers
    Using Security Cameras to Count Transit Passengers
    Monast, Kai ;
    Vaughan, Christopher L.
    2017-05-31 | PDF
    The Institute for Transportation Research and Education at North Carolina State University performed research to determine if transit vehicle security camera footage could be paired with Autoscope software to automatically count transit passenger boardings. The research was limited to community transportation systems vehicles. The Autoscope softwar ...
  • Risk Factors for Pedestrian and Bicycle Crashes
    Risk Factors for Pedestrian and Bicycle Crashes
    Monsere, Chris ;
    Wang, Haizhong
    2017-05-31 | PDF
    The primary goal of this research was to develop a tool for the Oregon Department of Transportation (ODOT) to improve methods to identify and prioritize locations with increased or elevated risk for pedestrian and bicycle crashes. This report includes a comprehensive review of many scientific reports and papers about the pedestrian and bicycle cras ...
    Supporting Files
  • Tolerances for Placement of Tie Bars in Portland Cement Concrete Pavement
    Tolerances for Placement of Tie Bars in Portland Cement Concrete Pavement
    Ghadban, Ahmad A. ;
    Wehbe, Nadim
    2017-05-31 | PDF
    Longitudinal joints are an essential part of Portland Cement Concrete (PCC) pavement slabs. These joints are reinforced with tie bars in order to control joint opening due to thermal stresses. Inspections of PCC pavements by the South Dakota Department of Transportation (SD DOT) using Ground Penetrating Radar (GPR) revealed that it is common for ti ...
  • Investigation of Northern LongEared Bat Roosting Sites on Bridges
    Investigation of Northern Long-Eared Bat Roosting Sites on Bridges
    Civjan, Scott ;
    Berthaume, Angela
    2017-05-31 | PDF
    Populations of several non-migratory bat species have declined significantly in New England due to White-nose Syndrome, resulting in several species, including the Northern Long-Eared Bat (Myotis septentrionalis), being listed as threatened or endangered at the federal or state level. While bats are known to roost in bridges in other regions, it wa ...
  • Performance of FRCM strengthened beams subject to fatigue
    Performance of FRCM strengthened beams subject to fatigue.
    Hadad, Houman A. ;
    Nanni, Antonio
    2017-05-31 | PDF
    Fabric Reinforced Cementitious Matrix (FRCM) systems have been developed to strengthen or rehabilitate existing concrete and masonry structures subject to damage, steel reinforcement corrosion or requiring resistance capacity improvements due to increased service loads or upgraded code requirements. Bridge decks, girders and pile caps, and parking ...
  • Health assessment and risk mitigation of railroad networks exposed to natural hazards using commercial remote sensing and spatial information technologies
    Health assessment and risk mitigation of railroad networks exposed to natural hazards using commercial remote sensing and spatial information technologies.
    Lynch, Jerome ;
    Ettouney, Mohammed
    2017-05-31 | PDF
    The overarching goal of this project was to integrate data from commercial remote sensing and spatial information (CRS&SI) technologies to create a novel data-driven decision making framework that empowers the railroad industry to monitor, assess, and manage the risks associated with their aging bridge inventories, especially those exposed to natur ...
  • Advanced Vehicle Technology Simulation and Research Outreach to Stem Programs Research Report Summary
    Advanced Vehicle Technology Simulation and Research Outreach to Stem Programs : Research Report Summary
    McDonald, Ashley B. ;
    McGehee, Daniel V.
    2017-05-30 | PDF
    The University of Iowa (UI) and the leaders of the MyCarDoesWhat campaign partnered with the National Advanced Driving Simulator (NADS) miniSim and the UI Mobile Museum to build an interactive exhibit as part of the overall museum for visitors to experience simulation research and technology. The UI’s Mobile Museum is a 36-foot recreational vehicle ...
  • StormwaterPavement Interface in Cold Climates Final Report
    Stormwater-Pavement Interface in Cold Climates: Final Report
    Haselbach, Liv M. ;
    Nassiri, Somayeh
    2017-05-27 | PDF
    This project relates to “managing stormwater runoff in cold climates” and addresses the feasibility of low-impact development at a regional demonstration site in eastern Washington. The studies relate to seven large permeable pavement systems. The findings for similar climates and soils are as follows: The draindown times for retention in Palouse o ...
  • EVALUATION OF FLOORPAN TEARING AND CABLE SPLICES FOR CABLE BARRIER SYSTEMS
    EVALUATION OF FLOORPAN TEARING AND CABLE SPLICES FOR CABLE BARRIER SYSTEMS
    Lechtenberg, Karla A. ;
    Hartwell, Jason A.
    2017-05-26 | PDF
    This research effort consisted of two objectives related to components of a prototype cable barrier system. The first objective was to mitigate the potential for vehicle floorpan tearing by modifying the cable guardrail posts. A bogie vehicle was equipped with a simulated floorpan designed to replicate the height, thickness, and strength of the flo ...
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