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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 6121 - 6140 of 36958 results
  • I94 Connected Vehicles Testbed Operations and Maintenance
    I-94 Connected Vehicles Testbed Operations and Maintenance
    Duhn, Melissa ;
    Parikh, Gordon
    2019-06-01 | PDF
    In March 2017, the Connected Vehicle Testbed along I-94 went live. The original project was sponsored by the Roadway Safety Institute and built on the Minnesota Traffic Observatory’s (MTO) existing field lab, also utilizing certain Minnesota Department of Transportation (MnDOT) infrastructure. The testbed originally consisted of seven stations, roo ...
  • Every Day Counts OnRamp to Innovation EDC5 Progress Report 1 January June 2019
    Every Day Counts: On-Ramp to Innovation - EDC-5 Progress Report #1, January – June 2019
    United States. Federal Highway Administration
    2019-06-01 | PDF
    Every Day Counts (EDC) is the Federal Highway Administration’s program to advance a culture of innovation in the transportation community in partnership with public and private stakeholders. Through this State-based effort, FHWA coordinates rapid deployment of proven strategies and technologies to shorten the project delivery process, enhance roadw ...
  • Division of Engineering Research OnCall Services Task 2 Rating of the Stringer System of the Approach Spans of the CombsHehl Bridge
    Division of Engineering Research On-Call Services: Task 2: Rating of the Stringer System of the Approach Spans of the Combs-Hehl Bridge
    Swanson, James A. ;
    Rassati, Gian Andrea
    2019-06-01 | PDF
    The Combs-Hehl Bridge is a series of structures over the Ohio River near Cincinnati spanning between Ohio on the east end and Kentucky on the west end. The overall bridge consists of four approach spans on the Kentucky side of the river (spans 1-4), two main truss spans over the river, (spans 5 and 6), and four approach spans on the Ohio side of th ...
  • MaintenanceFree CorrosionResistant Steel Plate for Bridges
    Maintenance-Free Corrosion-Resistant Steel Plate for Bridges
    Provines, Jason ;
    Sharp, Stephen R
    2019-06-01 | PDF
    This study compared the fabrication requirements, corrosion resistance, mechanical properties, construction components, and cost of using traditional bridge steels and corrosion-resistant steels. Comparisons were made based on existing literature, discussions with and knowledge gained from industry experts, experimental testing, and field visits. T ...
  • PostTensioned Concrete BoxGirder Bridge Deck Replacement Analysis
    Post-Tensioned Concrete Box-Girder Bridge Deck Replacement Analysis
    Zhang, Youyou ;
    Chai, Y.H.
    2019-06-01 | PDF
    Issues related to the replacement of damaged bridge decks were examined in this study. Finite element analyses of four post-tensioned box-girder bridges were conducted to investigate various strategies for safe and effective deck replacement without the use of falsework for any of the superstructure spans. Parameters of the study included straight, ...
  • Methodology for Evaluation of SealCoated Gravel and Dirt Roads
    Methodology for Evaluation of Seal-Coated, Gravel, and Dirt Roads
    Hossain, Mohammad I ;
    Tutumluer, Erol
    2019-06-01 | PDF
    The objective of this research project was to develop methodologies for the evaluation of different types of seal-coated, gravel, and dirt roads by using a best-practice-oriented pavement-management system in Illinois. A statewide survey comprised of 13 questions collected 133 responses from county engineers and highway commissioners. Many counties ...
  • Minnesota Local Road Research Board Strategic Plan FY 20192024
    Minnesota Local Road Research Board Strategic Plan FY 2019-2024
    Minnesota Local Road Research Board
    2019-06-01 | PDF
    The Minnesota Local Road Research Board (LRRB) has been bringing innovations to local Minnesota transportation engineers since 1959. Established through state legislation, the LRRB sponsors transportation research in the areas of design, construction, maintenance/operations, environmental compatibility, administration and implementation needs of ci ...
  • Active Transportation Accounting Developing Metrics for Project Prioritization
    Active Transportation Accounting: Developing Metrics for Project Prioritization
    Villamagna, Amy ;
    Getts, Laura
    2019-06-01 | PDF
    Despite growing interest and momentum in enhancing active transportation, little weight is currently given to active transportation projects. This is largely due to the lack of sufficient data. In order to identify key areas for active transportation enhancement, to justify investment, and to measure success, it is necessary to understand where and ...
  • CloudBased Dynamic Warning System
    Cloud-Based Dynamic Warning System
    Wentz, Bradley ;
    Smadi, Mohammad
    2019-06-01 | PDF
    Horizontal curves account for more than 25% of highway fatal crashes and have a crash rate that is three times that of other highway segments. Transportation agencies employ dynamic warning systems that utilize roadside speed detection and warning equipment to provide drivers with a warning when they enter a curve at a speed that might be too high ...
  • Understanding Ridership Trends in Transit Research Brief
    Understanding Ridership Trends in Transit [Research Brief]
    Polzin, Steven E.
    2019-06-01 | PDF
    Millions of Floridians use mass transit every day, many as their main means of transportation. Yet, over the past few years, transit ridership has declined, with Florida’s decline in ridership exceeding the national trend. Transit agencies often plan five and ten years out, and to do so, they need to understand the needs and attitudes that lead to, ...
  • Evaluation of Precast Concrete Pavement Systems and CastInPlace Phase I Identification of Accelerated Concrete Pavement Rehabilitation Methods
    Evaluation of Precast Concrete Pavement Systems and Cast-In-Place, Phase I: Identification of Accelerated Concrete Pavement Rehabilitation Methods
    Mehta, Yusuf ;
    Ali, Ayman
    2019-06-01 | PDF
    Methods New Jersey Department of Transportation has the ability to rehabilitate and open Portland Cement Concrete (PCC) pavements to traffic within a short period of time and minimize road closure effects using rapid concrete pavement repair methods. The goal of this study was to evaluate current accelerated concrete pavement rehabilitation technol ...
  • Analysis of Lightweight Transparent Noise Barriers on IH30 Elevated Structures in Dallas Texas
    Analysis of Lightweight Transparent Noise Barriers on IH-30 Elevated Structures in Dallas, Texas
    Trevino, Manuel
    2019-06-01 | PDF
    The Texas Department of Transportation commissioned a study to analyze the feasibility and effectiveness of lightweight noise barriers on Interstate Highway 30, near downtown Dallas. The highway segment in question, an elevated structure next to a creek, has presented noise problems for the adjacent neighborhood ever since its expansion in the earl ...
  • Bridge Load Testing Versus Bridge Load Rating
    Bridge Load Testing Versus Bridge Load Rating
    Peiris, Abheetha ;
    Harik, Issam E.
    2019-06-01 | PDF
    The current method of load rating bridges according to American Association of State Highway and Transportation Officials (AASHTO) specifications can underestimate the capacity and behavior of bridges. Analytical equations do not account for the degree of rigidity of the supports, unintended composite action due to friction between girders and the ...
  • Improvement of Driving Simulator Eye Tracking Software
    Improvement of Driving Simulator Eye Tracking Software
    Davis, Brian ;
    Morris, Nichole L.
    2019-06-01 | PDF
    This work focuses on improving the eye tracking analysis tools used with the HumanFIRST driving simulator. Eye tracking is an importanttool for simulation-based studies. It allows researchers to understand where participants are focusing their visual attention while driving. The eye tracking system provides a nearly continuous record of the directi ...
  • A Data Fusion Approach for Extracting Highway Maintenance Features
    A Data Fusion Approach for Extracting Highway Maintenance Features
    Song, Ziqi ;
    Javanmardi, Mohammadreza
    2019-06-01 | PDF
    Most existing studies investigating highway feature extraction in the literature focus on a single source of data, e.g., aerial LiDAR or imagery data. Because each source of input data contains its own characteristic visual features, the fusion of the characteristic and complementary features acquired from both sensors can provide more reliable inf ...
  • Evaluation of the Effect of Homogeneity of the Asphalt Binder on Performance of a Recycled Mix Summary
    Evaluation of the Effect of Homogeneity of the Asphalt Binder on Performance of a Recycled Mix [Summary]
    Ali, Hesham
    2019-06-01 | PDF
    Florida International University researchers evaluated the effect of rejuvenators on the performance of RAP-containing asphalt mixes and compared their performance to conventional mixtures.
  • Active Transportation Accounting Developing Metrics for Project Prioritization
    Active Transportation Accounting: Developing Metrics for Project Prioritization
    Villamagna, Amy ;
    Getts, Laura
    2019-06-01 | PDF
    Despite growing interest and momentum in enhancing active transportation, little weight is currently given to active transportation projects. This is largely due to the lack of sufficient data. In order to identify key areas for active transportation enhancement, to justify investment, and to measure success, it is necessary to understand where and ...
  • Concrete Beams Prestressed Using Carbon Fiber Reinforced Polymer
    Concrete Beams Prestressed Using Carbon Fiber Reinforced Polymer
    Ozyildirim, H. Celik ;
    Sharp, Stephen R
    2019-06-01 | PDF
    Corrosion of reinforcement in reinforced concrete leads to damage in both the concrete and the reinforcement that requires costly repairs and inconvenience to the traveling public. When concrete is reinforced with steel prestressing strands that are under sustained tensile stress, corrosion is more critical than in non-prestressed concrete with non ...
  • Review of NonStandard Warm Mix Asphalt Projects
    Review of Non-Standard Warm Mix Asphalt Projects
    Scully Jr., Tim C.
    2019-06-01 | PDF
    Periodically, when the Kentucky Transportation Cabinet’s (KYTC) the Division of Construction receives requests to use non-standard warm mix asphalt technologies, it may be asked to waive the temperature specification or other product specifications/processes. The short-term and long-term impacts of this waiver are not completely understood. The Div ...
  • Reducing Construction Costs Through Effective Field Communication and Administration
    Reducing Construction Costs Through Effective Field Communication and Administration
    Dadi, Gabe ;
    Sturgill, Roy
    2019-06-01 | PDF
    Falling Road Fund receipts have placed added strain on the Kentucky Transportation Cabinet’s (KYTC) already-underfunded highway program. Revenue declines have increased the urgency of improving the efficiency and cost-effectiveness of the Cabinet’s operations. One method KYTC can use to realize greater cost savings is improving the administration o ...
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