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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 5701 - 5720 of 36990 results
  • Synthesis of Safety Applications in Winter Weather Operations
    Synthesis of Safety Applications in Winter Weather Operations
    Shahandashti, Mohsen ;
    Mattingly, Stephen P.
    2019-11-01 | PDF
    Despite every precaution taken by the TxDOT maintenance operators, winter operations vehicles have been hit in the rear, causing injury to the operators as well as the travelling public. The objectives of this synthesis research project were to synthesize and critically evaluate existing methods and devices used by various TxDOT districts for enhan ...
  • Evaluation of Performance and LifeCycle Cost of Asphalt 818 Specifications Research Project Capsule
    Evaluation of Performance and Life-Cycle Cost of Asphalt (8/18 Specifications) [Research Project Capsule]
    Mayeux, Corey R ;
    Rupnow, Tyson
    2019-11-01 | PDF
    The Louisiana Department of Transportation and Development (DOTD) has constructed many of its roadways with hot mix asphalt, relying on control of volumetric properties to ensure pavement performance. Due to increased traffic, along with sole reliance on volumetric properties for quality, more frequent premature failures have occurred on these road ...
  • T15 Base One Soil Stabilization
    T15 Base One Soil Stabilization
    Abernathy, Craig
    2019-11-01 | PDF
    The project is located on Montana Route 117 (P-17) in Valley County from the north end of the Milk River bridge extending north approximately 1.91 miles to the new alignment and intersection of MT 117 and (NHS/NI) US2. Test sections will also include the old stretch of MT 117 through the town of Nashua (Front and Sargent STS). The pavement sections ...
  • Phase II Evaluation of Metakaolin for GDOT Concrete Specifications ASTM C618 N Pozzolan and Mass Concrete Provision
    Phase – II Evaluation of Metakaolin for GDOT Concrete Specifications (ASTM C618 N Pozzolan) and Mass Concrete Provision
    Geum Chorzepa, Mi ;
    Durham, Stephan A.
    2019-11-01 | PDF
    This report includes both experimental and analytical investigations of concrete mixtures containing supplementary cementitious materials to identify sustainable alternatives to Class F fly ash for use in Georgia’s mass concrete structures. The primary goal of this study is to identify concrete mixtures that reduce the potential for thermal crackin ...
  • Performance Engineered Pavements techbrief
    Performance Engineered Pavements [techbrief]
    United States. Department of Transportation. Federal Highway Administration. Office of Infrastructure
    2019-11-01 | PDF
    This Technical Brief provides an overview of the several initiatives that encompass the concept of Performance Engineered Pavements (PEP). This document serves as the first in a series of PEP technical briefs on designing and accepting our nation's pavements for performance. Future technical briefs will focus on Asphalt Performance Testing (APT), C ...
  • MultiModal Modelling BIM Template for Hub Connectivity and Networks
    Multi-Modal Modelling: BIM Template for Hub Connectivity and Networks
    Briscoe, Danelle
    ORCID ICON IMG
    2019-11-01 | PDF
    A multimodal, transportation-oriented approach to a Building Information Model (BIM) template advances the application of this technology to a new typology. Furthermore, the directive of the template explores equity diverse populations and communities through the development of user based BIM component assemblies ranging from air travel 3D model ob ...
  • NonOptimal Usage and Perception of a Protected Intersection for Bicycling and Walking Salt Lake City UT
    Non-Optimal Usage and Perception of a Protected Intersection for Bicycling and Walking, Salt Lake City, UT
    Lyons, Torrey ;
    Choi, Dong-ah
    2019-11-01 | PDF
    This paper examines a before-and-after case study of a protected intersection in Salt Lake City, Utah. The intersection was completed in late 2015 and represents one of the first examples of a protected intersection in North America. This research aims to determine the impact of new intersection configurations on separated bike lanes in regard to p ...
  • Development of the Road Construction Database ReCORD System
    Development of the Road Construction Database (ReCORD) System
    Durham, Stephan A. ;
    Johnsen, Kyle
    2019-11-01 | PDF
    Documentation of past experiences through the use of a Lessons Learned Program (LLP) is instrumental to an organization’s ability to improve by avoiding past mistakes while adapting to new solutions and methods. Feedback from project stakeholders through interviews and meetings, as well as a national survey of state department of transportation pro ...
  • Investigating the Optimum Performance of Snowplowable Reflective Pavement Markers
    Investigating the Optimum Performance of Snowplowable Reflective Pavement Markers
    Dwyer, Carmine E. ;
    Himes, Scott
    2019-11-01 | PDF
    This project investigated the installation and performance of snowplowable reflective pavement markers (SRPMs) to determine optimum pavement marker solutions and policies for roadways in Illinois. The research evaluated the performance of five traditional cast-iron and two plastic SRPMs on test sections of both asphalt and concrete pavements. Analy ...
  • Concrete Pavement Repairs with NonCementitious Materials Research Brief
    Concrete Pavement Repairs with Non-Cementitious Materials [Research Brief]
    Ram, Prashant V
    ORCID ICON IMG
    2019-11-01 | PDF
    The Wisconsin Department of Transportation (WisDOT) does its best to minimize traffic disruptions when repairing high-traffic roadways by limiting lane closures to off-peak (overnight) hours. WisDOT typically employs rapid-setting concrete or asphalt concrete, rather than conventional cementitious strategies, to meet the demands of these six-to-eig ...
  • Using the Portable XRF to IdentifyVerify Field Material Properties Research Project Capsule
    Using the Portable XRF to Identify/Verify Field Material Properties [Research Project Capsule]
    Milla, Jose ;
    Rupnow, Tyson
    2019-11-01 | PDF
    The objective of this study is to develop a methodology to apply a portable x-ray fluorescence (XRF) and attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy to Louisiana’s material needs, and to evaluate the efficiency of the portable devices to characterize relevant materials for acceptance.
  • Strengthening of Existing InvertedT Bent Caps Design Recommendations and Examples
    Strengthening of Existing Inverted-T Bent Caps: Design Recommendations and Examples
    Hurlebaus, Stefan ;
    Mander, John B.
    2019-11-01 | PDF
    Inverted-T bent caps have been widely used in Texas to reduce the overall elevation of bridges, to improve the available clearance beneath the beams, and to improve aesthetics. Since bridge design criteria have been improved and modified over the decades, many of the early inverted-T bent caps are deficient when evaluated against the current design ...
  • Regression Equations for Estimating Flood Discharges for the Eastern Coastal Plain Region of Maryland
    Regression Equations for Estimating Flood Discharges for the Eastern Coastal Plain Region of Maryland
    Thomas Jr, Wilbert O ;
    Sanchez-Claros, Windsor
    2019-11-01 | PDF
    Regression equations were updated for estimating the 1.25-. 1.50-, 2-, 5-, 10-, 25-, 50-, 100-, 200- and 500-year flood discharges for the Eastern Coastal Plain Region of Maryland. The regression equations were based on flood discharges for 36 stations and drainage area, in square miles; land slope, in percent; and hydrologic soils group A, in perc ...
  • Domestic Airline Fares Consumer Report Second Quarter 2019 Passenger and Fare Information
    Domestic Airline Fares Consumer Report: Second Quarter 2019 Passenger and Fare Information
    United States. Department of Transportation
    2019-11-01 | Domestic Airline Fares Consumer Report | PDF
    Each month the Department of Transportation releases an Air Travel Consumer Report that includes information about various service quality elements, including flight delays, mishandled baggage, over sales, and a variety of other types of consumer complaints. In response to an increasing number of inquiries from consumers about domestic airline pric ...
  • Asset Management Guide for Local Agencies
    Asset Management Guide for Local Agencies
    Robjent, Lyndon ;
    Clark, Perry
    2019-11-01 | PDF
    Asset management principles and practices are strongly aligned with sustainability concepts; aligning a local government’s asset management practices with its sustainability initiatives helps to improve the efficiency and effectiveness of service delivery and investment decisions. This Guidebook has been prepared by the Research Implementation Comm ...
  • Virginias First CorrosionResistant ASTM A1010 Steel Plate Girder Bridge
    Virginia’s First Corrosion-Resistant ASTM A1010 Steel Plate Girder Bridge
    Sharp, Stephen R ;
    Provines, Jason T.
    2019-11-01 | PDF
    This study documented the construction of the Route 340 Bridge in Waynesboro, Virginia, with maintenance-free corrosion-resistant steel girders, secondary members, and stainless steel fastener assemblies. This included documenting the material properties of ASTM A1010 (hereinafter “A1010”) steel plate; girder and secondary member fabrication; erect ...
  • Domestic Airline Fares Consumer Report First Quarter 2019 Passenger and Fare Information
    Domestic Airline Fares Consumer Report: First Quarter 2019 Passenger and Fare Information
    United States. Department of Transportation
    2019-11-01 | Domestic Airline Fares Consumer Report | PDF
    Each month the Department of Transportation releases an Air Travel Consumer Report that includes information about various service quality elements, including flight delays, mishandled baggage, over sales, and a variety of other types of consumer complaints. In response to an increasing number of inquiries from consumers about domestic airline pric ...
  • Monitoring Lateral Earth Pressures and Movements of Cut Retaining Walls
    Monitoring Lateral Earth Pressures and Movements of Cut Retaining Walls
    Marr, W Allen ;
    DiMaggio, Jerry A.
    2019-11-01 | PDF
    The design and performance of retaining walls requires accurate estimates of the lateral earth pressures for strength limit states and service limit states. Several design methods are available and are used to predict the lateral earth pressures acting on the wall as well as the lateral and vertical wall movements of the wall and of the soil behind ...
  • Research Management Peer Exchange Hosted by the Oregon Department of Transportation November 6 2019
    Research Management Peer Exchange: Hosted by the Oregon Department of Transportation, November 6, 2019
    Oregon Department of Transportation
    2019-11-01 | PDF
    The Oregon Department of Transportation (Oregon DOT) hosted a research management peer exchange on November 4, 5, and 6, in Salem, Oregon. The purpose of a peer exchange is to give all participants a means to improve the quality and effectiveness of their research efforts, processes and programs. The primary focus of the peer exchange was research ...
  • Critical Path for Project Development
    Critical Path for Project Development
    Kreis, Doug ;
    Gibson, Bryan
    2019-11-01 | PDF
    Overseeing the delivery of highway projects at the Kentucky Transportation Cabinet (KYTC) requires the successful coordination of activities and inputs from multiple external agencies and members of the agency’s Project Development team, who have varied disciplinary backgrounds. Despite the complexity of project delivery, the Cabinet presently does ...
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