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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 7401 - 7420 of 36114 results
  • Guidelines for Evaluation of Ramp Signaling Deployments in a RealTime Operations Environment
    Guidelines for Evaluation of Ramp Signaling Deployments in a Real-Time Operations Environment
    Hadi, Mohammed ;
    Xiao, Yan
    2017-12-01 | PDF
    State agencies have developed warrants and guidelines for the identification of on-ramps for metering. However, these warrants only consider recurrent traffic conditions in the vicinity of each on-ramp without considering the need to meter multiple ramps to mitigate the impacts of downstream system bottlenecks. The goal of this project was to devel ...
    Supporting Files
  • Development and Testing of Optimized Autonomous and Connected Vehicle Trajectories at Signalized Intersections summary
    Development and Testing of Optimized Autonomous and Connected Vehicle Trajectories at Signalized Intersections [summary]
    Birriel, Elizabeth ;
    Elefteriadou, Lily
    2017-12-01 | PDF
    Visions of self-driving vehicles abound in popular science and entertainment. Many programs are at work to make a reality catch of this imagination. Vehicle automation has progressed rapidly in recent years, from simple driver assistance technologies like cruise control and in-vehicle wireless, to production-line vehicles that park themselves or st ...
  • Development of NonProprietary UltraHigh Performance Concrete Final Report
    Development of Non-Proprietary Ultra-High Performance Concrete: Final Report
    Berry, Michael ;
    Snidarich, Richard
    2017-12-01 | PDF
    Ultra-high performance concrete (UHPC) has mechanical and durability properties that far exceed those of conventional concrete. Particularly, UHPC has compressive and post-cracking tensile strengths of around 20 ksi and 0.72 ksi, respectively. Thus, elements made with UHPC are thinner/lighter than elements made with conventional concrete. The enhan ...
  • Colorado Road Usage Pilot Program Final Report
    Colorado Road Usage Pilot Program Final Report
    CH2M Hill, inc.  ...
    2017-12-01 | PDF
    In late 2016/early 2017 the Colorado Department of Transportation (CDOT) conducted an operational pilot of the Road Usage Charge (RUC) concept as a possible transportation funding replacement to the state gas tax. The Colorado Road Usage Charge Pilot Program (RUCPP) involved a total of 147 participating vehicles that used one of three mileage-repor ...
    Supporting Files
  • Analysis of Freight Transport Strategies and Methodologies summary
    Analysis of Freight Transport Strategies and Methodologies [summary]
    Upchurch, Jeremy ;
    Ludlow, Donald
    2017-12-01 | PDF
    Transportation planners constantly examine traffic flows to see if current roadway layouts are serving traffic needs. For freight hauling, this presents one issue on the open road, but a much different issue as these large vehicles approach their destination - usually a loading dock - which can be difficult to access through urban streets. This cre ...
  • Influence of Train Axle Load on WheelRail Interface Friction
    Influence of Train Axle Load on Wheel-Rail Interface Friction
    Khan, M R ;
    Dasaka, S M
    2017-12-01 | PDF
    The implementation of high-speed railways in India are in their early phases and vast studies are being conducted for the effective implementation of the system. Maintaining the traction required for efficient operation of trains at high speeds requires the net minimum frictional coefficient to be maintained at the wheel-rail interface, across the ...
  • Fatigue Resistant Design Criteria for MD SHA Cantilevered Mast Arm Signal Structure
    Fatigue Resistant Design Criteria for MD SHA Cantilevered Mast Arm Signal Structure
    Fu, Chung C. ;
    Ye, Yunchao
    2017-12-01 | PDF
    The fatigue design of the mast arm structures and connections vary significantly based on the Category of Importance factor adopted and the load cases for fatigue design loads. Consideration should include the cost and size of the structures for both urban and rural applications, and the type of vibration mitigation devices to be adopted for use on ...
  • Development of a Traffic Management Decision Support Tool for Freeway Incident Traffic Management FITM Plan Deployment
    Development of a Traffic Management Decision Support Tool for Freeway Incident Traffic Management (FITM) Plan Deployment
    Kim, Woon ;
    Kim, Hyeonmi
    2017-12-01 | PDF
    Traffic incidents have long been recognized as the main contributor to congestion in highway networks. Thus, contending with non-recurrent congestion has been a priority task for most highway agencies over the past decades. Under most incident scenarios, if proper diversion plans can be implemented in time, motorists can circumvent the congested se ...
  • INDOT Research Program Benefit Cost AnalysisReturn on Investment for Projects Completed in FY 2016
    INDOT Research Program Benefit Cost Analysis—Return on Investment for Projects Completed in FY 2016
    McCullouch, Bob
    2017-12-01 | PDF
    The Governor’s Office requested an annual financial analysis of the INDOT Research Program to determine the return on the research investment (ROI). The current financial analysis is for research projects that completed in FY 2016. Analyses on previous year's projects is necessary primarily due to the time it takes some project outcomes to be imple ...
  • Seven Year Performance of City of Shoreviews Pervious Concrete Project
    Seven Year Performance of City of Shoreview’s Pervious Concrete Project
    Izevbekhai, Bernard Igbafen ;
    Schroeder, Collin
    2017-12-01 | PDF
    Stormwater runoff from the Woodbridge neighborhood of Shoreview had previously been drained to Lake Owasso. City of Shoreview built the Woodbridge neighborhood’s local roads using pervious concrete pavements in 2009. Pervious concrete pavements exhibit high hydraulic conductivity and sound absorption ability. To evaluate the functional performance ...
  • Investigation of Use of Slag Aggregates and Slag Cements in Concrete Pavements to Reduce the Maintenance Cost
    Investigation of Use of Slag Aggregates and Slag Cements in Concrete Pavements to Reduce the Maintenance Cost
    Verian, Kho Pin ;
    Panchmatia, Parth
    2017-12-01 | PDF
    The objective of this research was to evaluate the influence of using the ACBFS aggregate (slag aggregate) as a replacement for natural aggregates on the properties of pavement concrete designed to meet the standard specifications of the Indiana Department of Transportation. A total of eight different concrete mixtures, four containing air-cooled b ...
  • A Knowledgebased System for Estimating Incident Clearance Duration for Maryland I95 a Case Study for the Project of MD17SHAUM419 Development of a Traffic Management Decision Support Tool for Freeway Incident Traffic Management FITM Plan Deployment
    A Knowledge-based System for Estimating Incident Clearance Duration for Maryland : I-95 a Case Study for the Project of MD-17-SHA/UM/4-19 : “Development of a Traffic Management Decision Support Tool for Freeway Incident Traffic Management (FITM) Plan Deployment”
    Won, Minsu ;
    Kim, Hyeonmi
    2017-12-01 | PDF
    For the incident response operations to be appreciated by the general public, it is essential that responsible highway agencies be capable of providing the estimated clearance duration of a detected incident at the level sufficiently reliable for motorists to make proper decisions such as selecting a detour route. Depending on the estimated clearan ...
  • Evaluate Alternatives to Right of Way Drainage Control along the Interstate
    Evaluate Alternatives to Right of Way Drainage Control along the Interstate
    Yaryan-Hall, Holly ;
    Arden, Shawn
    2017-12-01 | PDF
    Ohio Department of Transportation (ODOT) forces undertake routine and sometimes extensive maintenance of roadside ditches that impact the performance and safety of roadway drainage. Unfortunately, county crews have limited options to solve maintenance problems related to paved gutter deterioration and ditch erosion. This research project evaluates ...
  • Successes in Stewardship 2017 Year in Review Key Takeaways for Accelerating Project Delivery and Improving Environmental Outcomes
    Successes in Stewardship - 2017 Year in Review: Key Takeaways for Accelerating Project Delivery and Improving Environmental Outcomes
    United States. Federal Highway Administration
    2017-12-01 | 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.
  • Survey of Key Monarch Habitat Areas along Roadways in Central and North Florida Summary
    Survey of Key Monarch Habitat Areas along Roadways in Central and North Florida [Summary]
    Caster, Jeff ;
    Daniels, Jaret C.
    2017-12-01 | PDF
    The annual migration of the monarch butterfly is perhaps one of the most spectacular events on the planet. Each year, beginning in March, hundreds of millions of monarchs begin their journey of hundreds to thousands of miles, flying from roosts in Mexico to their summer homes in Canada and the United States. Millions of butterflies come to Florida ...
  • Design of a 3D Magnetic Mapping System to Locate Reinforcing Steel in Concrete Pavements
    Design of a 3-D Magnetic Mapping System to Locate Reinforcing Steel in Concrete Pavements
    Holle, Nathanael W.
    2017-12-01 | PDF
    This report outlines the design, fabrication, and testing of a 3-D magnetic mapping system used to locate reinforcing steel in concrete pavements developed at Kansas State University (KSU) in 2006. The magnetic sensing functionality is based on the principles of magnetic tomography which use time-varying magnetic fields to induce magnetic returns f ...
  • Realty Newsletter Winter 2018
    Realty Newsletter - Winter 2018
    United States. Department of Transportation. Federal Highway Administration. Office of Real Estate Services
    2017-12-01 | PDF
    The Federal Highway Administration's (FHWA) Office of Real Estate Services Newsletter is a resource which is intended to provide right-of-way professionals with the latest best practices, research results, training information, and information on policy and regulatory updates to ensure that Federal, State and local right-of-way program delivery is ...
  • Addressing Citizen Requests for Traffic Safety Concerns
    Addressing Citizen Requests for Traffic Safety Concerns
    Kuehl, Renae ;
    Sachi, Tom
    2017-12-01 | PDF
    The purpose of this guidebook is to provide local agency staff with a best practice approach to addressing citizen’s common requests for traffic safety concerns (i.e. signing and pavement markings, not larger scale infrastructure or planning projects). This guidebook focuses on the importance of communication with citizens when responding to traffi ...
  • Evaluation of Effectiveness and CostBenefits of Woolen Roadside Reclamation Products
    Evaluation of Effectiveness and Cost-Benefits of Woolen Roadside Reclamation Products
    Ament, Rob ;
    Pokorny, Monica L.
    2017-12-01 | PDF
    This research project developed three types of products for study: woolen erosion control blankets (ECBs), wool incorporated into wood fiber compost at a 40:1 ratio (compost to wool, by weight), and wool incorporated into silt fence. The project, supported by Montana Department of Transportation (MDT) and the Center for Environmentally Sustainable ...
    Supporting Files
  • Option Contracts Research Study
    Option Contracts Research Study
    United States. Department of Transportation. Federal Highway Administration. Office of Real Estate Services
    2017-12-01 | PDF
    The purpose of this report is to explore how and when Federal agencies and State DOT's can best take advantage of real estate option techniques for real property acquisitions afforded under the of Moving Ahead for Progress in the 21st Century (MAP-21) amendments to the Uniform Act.
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