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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 5201 - 5220 of 36958 results
  • Coordination within a Megaregion for Freight Planning Stakeholder Outreach
    Coordination within a Megaregion for Freight Planning: Stakeholder Outreach
    Walthall, Rydell D. ;
    Walton, C Michael
    2020-04-01 | PDF
    This project builds off the work of Texas Department of Transportation's (TxDOT’s) Texas Connected Freight Corridors (TCFC) project with a goal of distilling lessons learned. TCFC is an effort to pilot safety and congestion management connected vehicle (CV) technologies in the field via collaboration between public agencies and private companies in ...
  • What California Gains from Reducing Car Dependence
    What California Gains from Reducing Car Dependence
    Handy, Susan L
    ORCID ICON IMG
    2020-04-01 | PDF
    Cars provide an unparalleled level of mobility but have negative financial, public health, environmental, and social impacts. Reducing the need for driving in California would produce a range of household- and community-level benefits. Driving is associated with adverse health effects (e.g., obesity, high blood pressure, depression, injuries, fatal ...
  • Using Simulation to Assess and Reduce Conflicts between Drivers and Bicyclists
    Using Simulation to Assess and Reduce Conflicts between Drivers and Bicyclists
    Plumert, Jodie M. ;
    Kearney, Joseph K.
    2020-04-01 | PDF
    This paper presents an experiment conducted in a large-screen bicycling simulator to assess the impact of protected intersections on bicycle-vehicle conflicts by examining how bicyclists respond to vehicles making right-hook turns at protected vs. unprotected intersections. Participants were divided into four groups that differed by the road infras ...
  • Evaluation of Roadside Treatments To Mitigate Roadway Departure Crashes Technical Report
    Evaluation of Roadside Treatments To Mitigate Roadway Departure Crashes: Technical Report
    Avelar, Raul ;
    Geedipally, Srinivas
    2020-04-01 | PDF
    This report presents findings from a research project that sought to provide a systemic framework to identify high-risk locations for roadway departure crashes and applicable countermeasures for implementation. The products of the research project are intended to assist Texas Department of Transportation (TxDOT) districts with selecting projects th ...
  • Implementing the Superpave 5 Asphalt Mixture Design Method in Indiana
    Implementing the Superpave 5 Asphalt Mixture Design Method in Indiana
    Haddock, John E. ;
    Rahbar-Rastegar, Reyhaneh
    2020-04-01 | PDF
    Recent research developments have indicated that asphalt mixture durability and pavement life can be increased by modifying the Superpave asphalt mixture design method to achieve an in-place density of 95%, approximately 2% higher than the density requirements of conventionally designed Superpave mixtures. Doing so requires increasing the design ai ...
  • 21 Road With Barrier Evaluation of the Feasibility of Deployment of Swedish 21 Road With Barrier in Colorado
    2+1 Road With Barrier Evaluation of the Feasibility of Deployment of Swedish 2+1 Road With Barrier in Colorado
    Sarchet, Rich ;
    Williams, Jim
    2020-04-01 | PDF
    Deployment of 2+1 Road with Barrier in Colorado certainly has potential to improve safety. How much safety benefit to expect, however, is, so far, somewhat uncertain. The Swedish design is widely implemented and has a record of success, so proposed Colorado Design is substantially based on it, with some modifications recommended to better reflect U ...
  • Trip and Parking Generation at TransitOriented Developments Mockingbird TOD in Dallas Texas
    Trip and Parking Generation at Transit-Oriented Developments: Mockingbird TOD in Dallas, Texas
    Hamidi, Shima ;
    Etminani, Roya
    2020-04-01 | PDF
    The Institute of Transportation Engineers (ITE) guidelines serve as the most widely used reference for trip and parking generation estimates of any new development in the U.S. However, recent empirical studies question the efficacy of ITE guidelines in forecasting trip and parking generation in transit-oriented developments (TODs). Following the me ...
  • Orthogonal Reference Surrogate Fuels for Operability Testing
    Orthogonal Reference Surrogate Fuels for Operability Testing
    Yang, Zhibin ;
    Stachler, Robert
    2020-04-01 | PDF
    The approval and evaluation process for sustainable aviation fuels (SAF) via ASTM D4054 is both cost- and volume-intensive, namely due to engine operability testing under severe conditions. Engine operability tests of combustor under figures of merit (FOM) limit phenomena are the fuel effects on lean blowout, high-altitude relight, and cold-start i ...
  • CostSharing Mechanisms for RideSharing
    Cost-Sharing Mechanisms for Ride-Sharing
    Dessouky, Maged M. ;
    Vayanos, Phebe
    2020-04-01 | PDF
    In this research project, we seek to provide the emerging ride-sharing industry a method to determine how to allocate the cost such that it could potentially increase the incentive to use this environmentally friendly type of service. We first identify the desirable properties that a good cost-sharing mechanism shall have. Then, we develop a genera ...
  • Standard Specifications for Plow Blades With Carbide Inserts
    Standard Specifications for Plow Blades With Carbide Inserts
    Minge, Erik ;
    Sala, Jeremy
    2020-04-01 | PDF
    Many agencies use snowplow blades with carbide inserts to remove snow and ice from their roadways. While carbide inserts are effective at extending the service life of plow blades, there is variability in carbide quality and in the specifications used by each agency in their procurement. This project developed a set of standard specifications to im ...
  • Optimizing Field Data Collection Developing Advanced GPR Processing Modules
    Optimizing Field Data Collection & Developing Advanced GPR Processing Modules
    Goulias, Dimitrios
    2020-04-01 | PDF
    Over the past several years Maryland Department of Transportation State Highway Administration (MDOT SHA) developed a Ground Penetration Radar (GPR) data collection plan for bridge decks. GPR data was collected and analyzed to monitor several hundred bridge decks. MDOT SHA worked with the Maryland Environmental Services (MES) and the University of ...
  • Evaluation of AntiIcingDeIcing Products Under Controlled Environmental Conditions
    Evaluation of Anti-Icing/De-Icing Products Under Controlled Environmental Conditions
    Ji, Yigong ;
    McCullouch, Bob
    2020-04-01 | PDF
    Snow and ice removal are important tasks during the winter season and large amounts of anti-icing and de-icing chemicals are used and there is a critical need to review and synthesize information from the literature to compare and contrast anti-icing and deicing chemicals to understand their environmental impact and support decision making. The eff ...
  • Measuring the Impact of Florida Scenic Highway Designation
    Measuring the Impact of Florida Scenic Highway Designation
    Concas, Sisinnio ;
    Menon, Nikhil
    2020-04-01 | PDF
    This project details the design of two data collection instruments to assist the Florida Scenic Highway Program (FSHP) to evaluate and quantify the contribution of scenic highways to Florida’s economy and quality of life of Floridians. To summarize and report on scenic byways trends, this study developed two user-friendly tools for use by the FSHP ...
  • Extended Field Trials of LRAIL for Automated Track Change Detection
    Extended Field Trials of LRAIL for Automated Track Change Detection
    Fox-Ivey, Richard ;
    Nguyen, Thanh V.
    2020-04-01 | PDF
    LRAIL is a 3-dimensional laser inspection system that combines high-speed laser triangulation sensors and artificial intelligence to automatically inspect the condition of, and detect safety-related changes in, railway infrastructure. For this project, LRAIL technology was installed on a specialized hi-rail inspection trailer and data were captured ...
  • Understanding Interactions between Drivers and Pedestrian Features at Signalized Intersections Phase 3 Summary
    Understanding Interactions between Drivers and Pedestrian Features at Signalized Intersections, Phase 3 [Summary]
    Santos, Joseph ;
    Lin, Pei-Sung
    2020-04-01 | PDF
    University of South Florida researchers implemented and evaluated countermeasures intended to improve pedestrian safety in pilot projects in several areas of Florida.
  • Evaluating Crowdsourcing as a VMT Reduction Tool to Support Smart Cities Initiatives
    Evaluating Crowdsourcing as a VMT Reduction Tool to Support Smart Cities Initiatives
    Chandra, Shailesh ;
    Vyas, Rutviz
    2020-04-01 | PDF
    Vehicle miles traveled (VMT) is an indicator of vehicular emissions, which impacts climate change. Various stakeholders aim at reducing VMT to cause reductions in emissions. This research explores the use of crowdsourcing in supporting the efforts of the stakeholders in reducing VMT among college students at California State University Long Beach. ...
  • Synthesis of Regulations and Laws Pertaining to RoadwayRail Line Intersections on Ohios Local Transportation System
    Synthesis of Regulations and Laws Pertaining to Roadway/Rail Line Intersections on Ohio’s Local Transportation System
    Ludlow, Donald ;
    Kaulbeck, George
    2020-04-01 | PDF
    This report examines the current federal, state, and local powers related to grade crossing regulation and property/right-of-way ownership in Ohio, including law principles involving conflicting interests in real property. The report also includes a synthesis of the regulatory gaps and provides recommendations regarding bridging those gaps through ...
  • Perfecting Policy with Pilots New Mobility and AV Urban Delivery Pilot Project Assessment
    Perfecting Policy with Pilots: New Mobility and AV Urban Delivery Pilot Project Assessment
    Steckler, Becky ;
    Coia, Juliette
    2020-04-01 | PDF
    This study was designed to help public agencies understand what activities are most likely to help them achieve their pilot project goals. Researchers describe 10 recommended actions for all pilot projects, regardless of the mode. Researchers focused on pilot projects in the United States and Canada that involve testing of new mobility services and ...
  • Development and Implementation of a Moving Nondestructive Evaluation Platform for Bridge Deck Inspection
    Development and Implementation of a Moving Nondestructive Evaluation Platform for Bridge Deck Inspection
    Pashoutani, Sepehr ;
    Zhu, Jinying
    2020-04-01 | PDF
    Degradation in concrete bridge decks is typically manifested as rebar corrosion, concrete delamination, and surface cracks. Nondestructive evaluation and testing (NDE/NDT) technologies have been increasingly used in concrete bridge deck evaluation to identify, localize, and quantify deterioration in bridge decks. Each NDE method has its advantages ...
  • Best Practices on the Temporary Parking of Overflow Aircraft
    Best Practices on the Temporary Parking of Overflow Aircraft
    Le Bris, Gaël
    2020-04-01 | PDF
    Air traffic over the last few months has declined due to the COVID-19 pandemic. Overflow aircraft no longer being utilized to their full extent need to be parked. Many airports have facilities for parking overflow aircraft. The remote parking plans of airports should focus on safety, address the needs of various stakeholders, and be prepared throug ...
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