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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 8021 - 8040 of 36151 results
  • MnDOT thin whitetopping selection procedures final report
    MnDOT thin whitetopping selection procedures : final report.
    Taylor, Peter ;
    Vandenbossche, Julie
    2017-06-01 | PDF
    This report provides an integrated selection procedure for evaluating whether an existing hot-mix asphalt (HMA)pavement is an appropriate candidate for a bonded concrete overlay of asphalt (BCOA). The selection procedureincludes (1) a desk review, (2) coring, (3) visual examination (site visit), (4) additional coring and/or laboratorytesting (optio ...
  • Active travel behavior and spatialtemporal land use mixing final report
    Active travel behavior and spatial-temporal land use mixing : final report.
    Gehrke, Steven Robert
    2017-06-01 | PDF
    Smart growth policies have often emphasized the importance of land use mix as an intervention beholding of lasting urban planning and publichealth benefits. Past transportation-land use research has identified potential efficiency gains achieved by mixed-use neighborhoods and thesubsequent shortening of trip lengths; whereas, public health research ...
  • Evaluating the Impacts of TimeofDay Tolling on Indiana Roadways
    Evaluating the Impacts of Time-of-Day Tolling on Indiana Roadways
    Ukkusuri, Satish V. ;
    Labi, Samuel
    2017-06-01 | PDF
    In recent decades, several agencies have implemented tolls on their highway, bridge, or tunnel infrastructure for purposes that include mitigation and revenue generation. The Indiana Department of Transportation (INDOT) sought to investigate the feasibility of time-of-day tolling at a specific section of Indiana’s highways, and therefore commission ...
  • Approximating Shielding Effects on Galactic Cosmic Radiation Effective Dose Rate Calculations During Extreme Altitude and SubOrbital Flights Using CARI77A
    Approximating Shielding Effects on Galactic Cosmic Radiation Effective Dose Rate Calculations During Extreme Altitude and Sub-Orbital Flights Using CARI-7/7A
    Copeland, Kyle
    ORCID ICON IMG
    2017-06-01 | PDF
    The dominant source of ionizing radiation in the aerospace environment is galactic cosmic radiation (GCR). Traditionally, calculations of exposure rates for vehicle occupants in aircraft have not included vehicle structure; while in spacecraft, vehicle structure is considered without atmosphere. This report describes modifications applicable to CAR ...
  • Field implementation of fiberreinforced polymer FRP deck panels
    Field implementation of fiber-reinforced polymer (FRP) deck panels.
    Volz, Jeffery S. ;
    Khayat, Kamal H.
    2017-06-01 | PDF
    Jeffery S. Volz, S.E., P.E., Ph.D., Kamal H. Khayat, PhD, P.Eng. http://orcid.org/0000-0003-1431-0715, Soo Duck Hwang, Ph.D. http://orcid.org/0000-0003-2178-1531, Hesham Tuwair, Ph.D., Jonathan T. Drury, Amy S. CroneAlthough still in their infancy, fiber-reinforced polymer (FRP) bridges have shown great promise in eliminating corrosion concerns and ...
  • transportation sector
    transportation sector.
    Durbin, Thomas D. ;
    Karavalakis, Georgios
    2017-06-01 | PDF
    Some of the most important questions in the development of sustainable transportation areidentify fuels that will reduce emissions, provide diversification from fossil fuels, reducegreenhouse gas emissions, be produced from renewable sources, and that can be produced in asustainable manner. An alternative diesel fuel that could be used for particul ...
  • TechnoEconomic Analyses of LargeScale Electric Vehicle Systems
    Techno-Economic Analyses of Large-Scale Electric Vehicle Systems
    Qu, Zhihua
    2017-06-01 | PDF
    This project developed the process, methodology and algorithms for computer models to evaluate the techno-economic implications of a large-scale electrified transportation sector. The model factors include developing and interacting with a network of electric vehicles and the electric grid, the infrastructure for electric vehicle charging, integrat ...
  • Technology Transfer Educational and Professional Training Modules on GreenSustainability Design and Rating Systems Workshop
    Technology Transfer: Educational and Professional Training Modules on Green/Sustainability Design and Rating Systems Workshop
    Peters, Robert
    2017-06-01 | PDF
    The goal and focus of this proposed technology transfer project was to highlight and disseminate the results of Southeastern Transportation Research, Innovation, Development and Education Center (STRIDE) Research Project No. 2012-051S [Peters et al., 2015], thereby making the results of that project available to the technical community and the gene ...
  • Development of improved connection details for adjacent prestressed member bridges
    Development of improved connection details for adjacent prestressed member bridges.
    Halbe, Kedar ;
    Joyce, Patrick
    2017-06-01 | PDF
    Adjacent prestressed member girder bridges are economical systems for short spans and generally come in two types: adjacent box beam bridges and adjacent voided slab bridges. Each type provides the advantages of having low clearances because of their shallow section depths, accelerated construction times, and high torsional stiffness. The current l ...
  • FEANN based modeling of 3D Simple Reinforced Concrete Girders for Objective Structural Health Evaluation Tech Transfer Summary
    FE-ANN based modeling of 3D Simple Reinforced Concrete Girders for Objective Structural Health Evaluation : Tech Transfer Summary
    Rasheed, Hayder
    2017-06-01 | PDF
    The objective of this study was to develop an objective, quantitative method for evaluating damage to bridge girders by using artificial neural networks (ANNs). This evaluation method, which is a supplement to visual inspection, requires only the results of limited field measurements to operate.
  • Nondestructive testing NDT of a segmental concrete bridge scheduled for demolition with a focus on condition assessment and corrosion detection of internal tendons summary
    Non-destructive testing (NDT) of a segmental concrete bridge scheduled for demolition, with a focus on condition assessment and corrosion detection of internal tendons : [summary].
    Azizinamini, Atorod
    2017-06-01 | PDF
    In this project, Florida International University researchers used segments from a demolished concrete segmental bridge with internal tendons to study damage to post-stressed tendons and to test the effectiveness of various methods of non-destructive testing (NDT) for detecting damaged tendons.Tendon damage was investigated by examination of segmen ...
  • Safety impacts of the I35W improvements done under Minnesotas urban partnership agreement UPA project final report
    Safety impacts of the I-35W improvements done under Minnesota's urban partnership agreement (UPA) project : final report.
    Davis, Gary A. ;
    Gao, Jingru
    2017-06-01 | PDF
    As part of an Urban Partnership Agreement project, the Minnesota Department of Transportation added lanesand began operating a priced dynamic shoulder lane (PDSL) on parts of Interstate 35W. Following the opening ofthese improvements, the frequency of rear-end crashes increased in certain sections, especially in the PDSLregion. The object of this s ...
  • Best practices of using shotcrete for wall fascia and slope stabilization phase 1 study
    Best practices of using shotcrete for wall fascia and slope stabilization (phase 1 study)
    Qiao, Pizhong ;
    Zhou, Zhidong
    2017-06-01 | PDF
    Shotcrete has become attractive and holds potential to replace cast-in-place (CIP) concrete for elements like retaining walls and slope stabilization. However, this practice is still limited due to concerns of drying shrinkage cracking, long-term durability, and debonding from reinforcing bars or existing structures. To provide best practices of sh ...
  • Pilot Evaluation of the Use of Contract Towing and First Responder Strategies in the Virginia Department of Transportations Staunton District
    Pilot Evaluation of the Use of Contract Towing and First Responder Strategies in the Virginia Department of Transportation’s Staunton District.
    Dougald, Lance E. ;
    Venkatanarayana, Ramkumar
    2017-06-01 | PDF
    This study evaluated the contract towing and first responder pilot projects in the Virginia Department of Transportation’s Staunton District. The evaluation included before and after studies of incident duration and comparisons of clearance time. Both pilots were operational simultaneously during the period from May 1 to October 31, 2016, on I-81 f ...
  • Comprehensive field evaluation of asphalt patching methods and development of simple decision trees and a best practices manual
    Comprehensive field evaluation of asphalt patching methods and development of simple decision trees and a best practices manual.
    Dailey, Jay ;
    Dave, Eshan V.
    2017-06-01 | PDF
    The long-term performance of pothole patches largely depends on the selection of the patching method. A number of pothole patching methods are in practice in Minnesota and other nearby states. However, pavement maintenance crews often encounter problems in selecting the most appropriate patching method because proper guidelines are not available. T ...
  • Evaluation of R16 gateway treatment alternatives for pedestrian crossings followup report final report
    Evaluation of R1-6 gateway treatment alternatives for pedestrian crossings : follow-up report : final report.
    Van Houten, Ron ;
    Hochmuth, Jonathan
    2017-06-01 | PDF
    Monthly follow-up data confirmed that permanent in roadway installations of the R1-6 gateway treatment led to anincrease in the percentage of drivers yielding to pedestrians at midblock and multilane urban and suburban locationsfrom 15% to 70% and that these increases endured without any decrement over the spring, summer and fall of 2016.Speed data ...
  • Design installation and condition assessment of a concrete bridge deck constructed with ASTM A1035 CS no 4 bars
    Design, installation, and condition assessment of a concrete bridge deck constructed with ASTM A1035 CS no. 4 bars.
    Salomon, Abraham Lama ;
    Moen, Cristopher D.
    2017-06-01 | PDF
    Recently developed corrosion-resistant reinforcing structural design guidelines were used to design, construct, andassess a reinforced concrete bridge deck with high-strength ASTM A1035 CS steel bars. The bridge replacement is locatedalong the North Scenic Highway over the Wolf Creek in Bland County, Virginia. The bridge deck design used the higher ...
  • of Transportations Richmond District
    of Transportation’s Richmond District.
    Balakumaran, Soundar S.G. ;
    Kassner, Bernard L
    2017-06-01 | PDF
    The precast prestressed concrete voided slab structure is a popular bridge design because of its rapid construction and costsavings in terms of eliminating formwork at the jobsite. However, the longitudinal shear transfer mechanism often fails, leadingto leakage of salt-laden runoff water between individual beams and increased corrosion of prestres ...
  • Development of Case Studies Numerical Exercises and Instructional Modules for Teaching Roadway Safety Analysis
    Development of Case Studies, Numerical Exercises, and Instructional Modules for Teaching Roadway Safety Analysis
    Sivaramakrishnan, Srinivasan ;
    Haas, Phillip
    2017-06-01 | PDF
    This study developed three instructional modules using data from several safety projects conducted at University of Florida. Module 1 is focused on qualitative aspects of rural road safety assessment and countermeasure selection. Module 2 is focused on performing benefit-cost analyses for safety projects. Module 3 is focused on calibration of Highw ...
  • Successes in Stewardship NEPA Assignment Program Promotes Environmental Stewardship
    Successes in Stewardship - NEPA Assignment Program Promotes Environmental Stewardship
    United States. Federal Highway Administration
    2017-06-01 | PDF
    Successes in Stewardship is a Federal Highway Administration (FHWA) bimonthly newsletter highlighting current best practices in stewardship and environmental review from around the country.
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