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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 3041 - 3060 of 35959 results
  • Implementation Study Continuous Wireless Data Collection and Monitoring of the Sagamore Parkway Bridge
    Implementation Study: Continuous, Wireless Data Collection and Monitoring of the Sagamore Parkway Bridge
    Raja, Rameez Ali ;
    Kilic, Mustafa
    2021-12-01 | PDF
    This report presents, in detail, the development and implementation of a wireless solar powered DAQ system for continuous real-time monitoring of the Sagamore Parkway Bridge using the data collected from strain gauges installed in the bridge pier and its foundation piles. The data analysis showed that there is no significant change in the load-sett ...
  • INDOT Research Program Benefit Cost AnalysisReturn on Investment for Projects Completed in FY 2020
    INDOT Research Program Benefit Cost Analysis—Return on Investment for Projects Completed in FY 2020
    McCullouch, Bob
    2021-12-01 | PDF
    To demonstrate the value of research and its implementation, the Governor’s Office requested an annual financial analysis of the Indiana Department of Transportation (INDOT) Research Program to determine the return on the research investment (ROI). The current financial analysis is for 11 research projects that completed in FY 2020. Analyses on pre ...
  • Designing for Deck Stress Over Precast Panels in Negative Moment Regions
    Designing for Deck Stress Over Precast Panels in Negative Moment Regions
    Ge, Xiaomeng ;
    Munsterman, Keaton
    2021-12-01 | PDF
    With increases in the use of precast concrete panels (PCPs) in Texas bridges, ensuring acceptable deck cracking behavior is of paramount importance to avoid long-term maintenance problems. The purpose of this study is to understand the cracking behavior of reinforced concrete bridge decks with precast concrete panels in the negative moment regions ...
  • Bridge and Culvert Deterioration Models Using National Bridge Inventory Data
    Bridge and Culvert Deterioration Models Using National Bridge Inventory Data
    Weissmann, José ;
    Weissmann, Angela Jannini
    2021-12-01 | PDF
    This project developed and tested 44 bridge and 12 culvert deterioration models. Out of these, 38 bridge and 8 culvert models were validated and implemented into 9 Excel workbooks, where forecasts can be updated with new inspections. The 3 National Bridge Inventory (NBI)/PonTex bridge ratings: deck, superstructure and substructure (respectively Ite ...
  • Brace for Impact The Environmental and Economic Effects of Shifting Passenger Travel from Airplanes to HighSpeed Rail
    Brace for Impact: The Environmental and Economic Effects of Shifting Passenger Travel from Airplanes to High-Speed Rail
    Karpman, Jason
    2021-12-01 | PDF
    This research synthesis surveys recent literature from 2011 to 2020 on the environmental and economic effects of high-speed rail (HSR) projects from across the globe, with relevant lessons for implementation of the California High-Speed Rail (CAHSR) project. Recent literature shows that—under the right conditions—HSR can lead to both environmental ...
  • Determination of Pavement Surface Type
    Determination of Pavement Surface Type
    Sabillon, Christian ;
    Inoue, Danilo
    2021-12-01 | PDF
    This study evaluated and developed machine learning models for pavement surface classification to enhance accuracy and reliability using advanced computational techniques. Initially, a detailed literature review on pavement texture and measurement methods provided a foundation for developing a prototype system. This system, integrating laser scanne ...
  • SelfHealing Cementitious Composites SHCC with Ultrahigh Ductility for Pavement and Bridge Construction
    Self-Healing Cementitious Composites (SHCC) with Ultrahigh Ductility for Pavement and Bridge Construction
    Huang, Cihang ;
    Su, Yen-Fang
    2021-12-01 | PDF
    Cracks and their formations in concrete structures have been a common and long-lived problem, mainly due to the intrinsic brittleness of the concrete. Concrete structures, such as rigid pavement and bridge decks, are prone to deformations and deteriorations caused by shrinkage, temperature fluctuation, and traffic load, which can affect their servi ...
  • BirdLong Island Management Study Phase 2A Enhancement and Restoration Interventions for BirdLong Island Shoreline Alternatives Design and Modeling for Stewardship
    Bird-Long Island Management Study Phase 2A: Enhancement and Restoration Interventions for Bird-Long Island Shoreline Alternatives: Design and Modeling for Stewardship
    Alexander, Clark ;
    Calabria, Jon
    2021-12-01 | PDF
    This study evaluated a variety of design interventions using nature-based solutions to preserve a culture resource on Bird-Long Island and promote indigenous vegetative communities by maintaining or increasing vegetative biodiversity. Several alternatives were proposed that utilized a combination of green and gray infrastructure, such as living sho ...
  • Numerical Modeling of the Test Pit for Falling Weight Deflectometer Calibration
    Numerical Modeling of the Test Pit for Falling Weight Deflectometer Calibration
    Sadeghiamirshahidi, Mohammadhossein ;
    Speece, Marvin
    2021-11-24 | PDF
    Montana Department of Transportation (MDT) planned to replace the soft clay layer of their test pit for Falling Weight Deflectometer (FWD) calibration with a geofoam layer hoping to increase the operational lifetime of the test pit. In this research, the possibility of replacing the clay layer with a geofoam layer was investigated using dynamic res ...
  • AERMOD RLINE and RLINEXT Case Study Analyses in Atlanta Georgia
    AERMOD, RLINE, and RLINEXT Case Study Analyses in Atlanta, Georgia
    Guensler, Randall ;
    Lu, Hongyu
    2021-11-05 | PDF
    This research assessed the impact of USEPA’s AERMOD dispersion model (version of 19191) source types on predicted pollutant concentrations via a case study for the I-75/I-575 Northwest Corridor (NWC) in Atlanta, GA. Using MOVES-Matrix for MOVES 2014b, carbon monoxide (CO) emissions rates for every hour of a one-year study period were generated usin ...
  • Intersection Modifications Using MiniModularRoundabouts
    Intersection Modifications Using Mini-/Modular-Roundabouts
    Naik, Bhaven ;
    Dey, Kakan Chandra
    2021-11-01 | PDF
    Conversion of traditional intersections (stop controlled and signalized) to modern RABs has been a growing practice in many countries around the world including the U.S. – largely due to the benefits of reduction in crash frequency and severity, capacity improvement, and operational improvement. However, construction of traditional RABs is costly a ...
  • Strategic Deployment of Drone Centers and Fleet Size Planning for Drone Delivery
    Strategic Deployment of Drone Centers and Fleet Size Planning for Drone Delivery
    Sacharny, David ;
    Liu, Xiaoyue Cathy
    2021-11-01 | PDF
    This research project produces a statewide airspace network, delivery schedule, and truck/drone fleet mix. The airspace network is optimized to ensure that drones are strategically deconflicted as required by NASA and the total energy over that day is minimized. Such an airspace network is realized in a web-based platform, named the Utah Advanced A ...
  • Noise ModeltoMonitor Case Study Fact Sheet
    Noise Model-to-Monitor Case Study [Fact Sheet]
    Sperry, Benjamin R. ;
    Destocki, Devon
    2021-11-01 | PDF
    The ORITE team utilized a multi-part approach to addressing the research problem, including literature review, field traffic noise data collection, statistical analysis, and modeling of the traffic noise using the TNM software package.
  • Assessing the Incorporation of Racial Equity into Analytical and Modeling Practices in Transportation Planning
    Assessing the Incorporation of Racial Equity into Analytical and Modeling Practices in Transportation Planning
    Ong, Paul M. ;
    Bryant, Chelsey
    2021-11-01 | PDF
    This report examines if and to what extent state-level transportation departments in four states incorporate race and equity considerations into transportation planning technical analyses and modeling practices, particularly for long-range transportation plans, and how such equity-infused practices can be improved. The research team examined releva ...
  • Examine TradeOffs Between Center Separation and Shoulder Width Allotment for a Given Roadway Width
    Examine Trade-Offs Between Center Separation and Shoulder Width Allotment for a Given Roadway Width
    Geedipally, Srinivas R. ;
    Brewer, Marcus A.
    2021-11-01 | PDF
    In Texas, four-lane undivided roadways constitute a significant amount of mileage in rural areas. These highways have poor safety performance compared to other cross sections. However, there is not always sufficient space within the available right of way to accommodate a traditional four-lane divided cross section. Thus, a framework can assist roa ...
  • Sanitization of Transportation Data Policy Implications and Gaps
    Sanitization of Transportation Data: Policy Implications and Gaps
    Bishop, Matt
    ORCID ICON IMG
    2021-11-01 | PDF
    Data about mobility provides information to improve city planning, identify traffic patterns, detect traffic jams, and route vehicles around them. This data often contains proprietary and personal information that companies and individuals do not wish others to know, for competitive and personal reasons. This sets up a paradox: the data needs to be ...
  • Integration of Probe Data Tools into TMC Operations
    Integration of Probe Data Tools into TMC Operations
    Mathew, Jijo K ;
    Li, Howell
    2021-11-01 | PDF
    With the advent of probe data, there is a need to virtualize many of the Traffic Management Center (TMC) tools used for analyzing work zones, severe crashes, winter operations, moving maintenance operations, and providing dashboards characterizing overall system mobility. Traditional tools have evolved over the past several years and it is importan ...
  • Training and Implementation Resources for Pedestrian and Bicyclist Count Data
    Training and Implementation Resources for Pedestrian and Bicyclist Count Data
    Turner, Shawn ;
    Lasley, Phil
    2021-11-01 | PDF
    A previous Texas Department of Transportation (TxDOT) research project (0-6927) developed a statewide pedestrian and bicyclist count database (https://mobility.tamu.edu/bikepeddata/), as well as guidance and requirements for collecting and submitting additional count data to this statewide database. This implementation project developed three train ...
  • Benchmarking Smart City Technology Adoption in California An Innovative Web Platform for Exploring New Data and Tracking Adoption
    Benchmarking “Smart City” Technology Adoption in California: An Innovative Web Platform for Exploring New Data and Tracking Adoption
    Post, Alison ;
    Ratan, Ishana
    2021-11-01 | PDF
    In recent years, “smart city” technologies have emerged that allow cities, counties, and other agencies to manage their infrastructure assets more effectively, make their services more accessible to the public, and allow citizens to interface with new web-and mobile-based alternative service providers. This project developed an innovative user-frie ...
  • Crack Resistance and Durability of Ohio DOT Asphalt Mixtures Using IFIT IDEALCT Phase 2
    Crack Resistance and Durability of Ohio DOT Asphalt Mixtures Using I-FIT & IDEAL-CT: Phase 2
    Abbas, Ala R. ;
    Nazzal, Munir
    2021-11-01 | PDF
    The primary objective of this research project was to assist the Ohio Department of Transportation (ODOT) in identifying a laboratory test that can be used to characterize the fracture behavior and cracking resistance of asphalt mixtures for potential incorporation into ODOT’s mix design approval and quality control/quality assurance (QC/QA) proces ...
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