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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 1301 - 1320 of 35867 results
  • Microsimulation Department Assessment and Guidance Summary
    Microsimulation: Department Assessment and Guidance [Summary]
    Hill, Thomas ;
    Hadi, Mohammad
    2024-02-01 | PDF
    The goal of this research project was to provide guidance and direction to improve FDOT’s microsimulation modeling practice.
  • Counting Airport Operations Using Aircraft Transponder Signals andor Aircraft Automatic Dependent SurveillanceBroadcast ADSB Data
    Counting Airport Operations Using Aircraft Transponder Signals and/or Aircraft Automatic Dependent Surveillance-Broadcast (ADS-B) Data
    Pesce, John ;
    Rashedi, Ramin
    2024-02-01 | PDF
    Accurate estimation of daily and annual aircraft operations at airports is vital for various objectives, including airport planning, funding allocation, and aviation forecasts. However, obtaining precise operational data from airports without control towers has been challenging. In 2018, the Florida Department of Transportation (FDOT) published an ...
  • Socioeconomic Data Development Methods for Travel Demand Model Inputs An Assessment of Socioeconomic Data Development Methods for TravelDemandModeling Input Preparation
    Socioeconomic Data Development Methods for Travel Demand Model Inputs: An Assessment of Socioeconomic Data Development Methods for Travel-Demand-Modeling Input Preparation
    Gresham, Craig ;
    Baird, Tim
    2024-02-01 | PDF
    The objective of this research project is to evaluate the current method to develop TAZ-level socioeconomic forecasts for counties in the state outside the Wasatch Front and explore options for reducing costs and improving data quality. The socioeconomic data forecasts are currently developed in a series of spreadsheets that must be manually update ...
  • Using GIS to Highlight Highway Segments Sensitive to Deicing Material
    Using GIS to Highlight Highway Segments Sensitive to Deicing Material
    Gallagher, Mark ;
    Lovel, Rick
    2024-02-01 | PDF
    To identify roadway-adjacent areas that are likely to have a greater sensitive to deicing chemicals, specifically chlorides, this project conducted a literature search to describe the effects of deicing chemicals, the factors which mitigate or increase their impacts, and constructed a geospatial model that uses a variety of descriptive data to esti ...
  • Calculating Plow Cycle Times from Automatic Vehicle Location AVL Data
    Calculating Plow Cycle Times from Automatic Vehicle Location (AVL) Data
    Lee, Ming-Shiun ;
    Crow, Mallory
    2024-02-01 | PDF
    Winter weather events can yield low visibility and/or lower the coefficient of friction on the road surface resulting in vehicular crashes or congestion. Transportation agencies are tasked with maintaining safe and reliable roadways for the traveling public which includes combating these snow and ice events. The traveling public’s demand for a high ...
  • Examining Data Needs and Implementation Process of AVBased Microtransit Service A Case Study in Lake Nona Summary
    Examining Data Needs and Implementation Process of AV-Based Microtransit Service: A Case Study in Lake Nona [Summary]
    Schoelzel, Paul ;
    Peng, Zhong-Ren
    2024-02-01 | PDF
    The objectives of this project were to 1) examine the AV-based microtransit service in the Lake Nona neighborhood of Orlando, Florida called Move Nona and 2) develop a framework for examining various aspects of the system, including policy and government support, infrastructure and technology, service and management, financial sustainability, and r ...
  • New Directions for Travel Behavior Modeling Lessons from Freight Studies
    New Directions for Travel Behavior Modeling: Lessons from Freight Studies
    Stinson, Monique ;
    Mohammadian, Abolfazl Kouros
    2024-02-01 | PDF
    Planners and policymakers rely on data and models to support infrastructure, operational, and other decisions. Attitudinal data, and models that use these data, provide insights into passenger travel behavior that cannot be easily explained by other types of data. However, collecting and using attitudinal data in transportation models has many chal ...
  • Multistage Models for Dynamic RideSharing in Taxi Services and Congestion Analysis Brief
    Multi-stage Models for Dynamic Ride-Sharing in Taxi Services and Congestion Analysis [Brief]
    Quadrifoglio, Luca ;
    Zhang, Cheng
    2024-02-01 | PDF
    This research introduces practical optimization model for implementing ride-sharing in taxi services and studies the effects of ride-sharing on the congestion status through the case study of Chicago. Ride-sharing combines trips into one ride-shared trip with the objective of maximizing the total mileage saving. This research proposes a multi-stage ...
  • New Repair Strategies for LifeCycle Extension of Corroded Steel Girder Bridges
    New Repair Strategies for Life-Cycle Extension of Corroded Steel Girder Bridges
    Tarasova, Anna ;
    Kanakamedala, Deven
    2024-02-01 | PDF
    Steel girder ends are susceptible to corrosion damage due to deicing salts, water, and other contaminants leaking from failed expansion joints. When corrosion becomes significant, it leads to a reduction in the sectional properties of steel girders and consequently reduces bearing and shear resistance. Conventional repair methods, although effectiv ...
  • New Repair Strategies for LifeCycle Extension of Corroded Steel Girder Bridges Summary
    New Repair Strategies for Life-Cycle Extension of Corroded Steel Girder Bridges [Summary]
    Varma, Amit H. ;
    Connor, Robert J.
    2024-02-01 | PDF
    Steel girder ends are susceptible to corrosion damage due to deicing salts, water, and other contaminants leaking from failed expansion joints. When corrosion becomes significant, it leads to a reduction in the sectional properties of steel girders and consequently reduces bearing and shear resistance. Conventional repair methods, although effectiv ...
  • Standard Method of Test for Mechanical Rocker Ice Melting
    Standard Method of Test for Mechanical Rocker Ice Melting
    Nazari, Mehdi Honarvar ;
    Jamal, Mueed
    2024-02-01 | PDF
    Winter road maintenance provides significant safety and economic benefits during adverse winter weather conditions. Chemicals are commonly used prior, during and after storms to provide better road conditions through a variety of mechanisms. The solid deicer most used by State departments of transportation (DOTs) is sodium chloride (NaCl), but the ...
  • A Comparison of Department of Transportation Progress Scheduling Specifications From Across the Nation
    A Comparison of Department of Transportation Progress Scheduling Specifications From Across the Nation
    Shane, Jennifer S. ;
    Gatto, Andrew
    2024-02-01 | PDF
    One of the primary determinants of project success is completion of the project on or ahead of schedule. Owners therefore pay a great deal of attention to schedule progress and timely project completion. This holds true especially for departments of transportation (DOTs), each of which adheres to its own specification requirements for progress sche ...
  • A Comparison of Department of Transportation Progress Scheduling Specifications From Across the Nation Tech Transfer Summary
    A Comparison of Department of Transportation Progress Scheduling Specifications From Across the Nation [Tech Transfer Summary]
    Shane, Jennifer S.
    ORCID ICON IMG
    2024-02-01 | PDF
    The central objective of this research was to help the Iowa Department of Transportation (DOT) revise its progress scheduling specifications in a way that meets its core mission objectives while improving the practicality and efficiency of project management for contractors.
  • A Framework for Field Inspection of Inservice FRP ReinforcedStrengthened Concrete Bridge Elements
    A Framework for Field Inspection of In-service FRP Reinforced/Strengthened Concrete Bridge Elements
    Mehrabi, Armin ;
    Dolati, Seyed Saman Khedmatgozar
    2024-02-01 | PDF
    The main objective of this project is to develop the framework for inspection and condition assessment of in-service FRP reinforced/strengthened concrete (FRP-RSC) bridge elements. The framework applies to both FRP reinforced structures (FRP internal application) and FRP strengthened structures (FRP external application) and conforms with National ...
  • Trip Generation for Various Sites Research Project Capsule 242SS
    Trip Generation for Various Sites: Research Project Capsule [24–2SS]
    Bian, Ruijie “Rebecca” ;
    Rupnow, Tyson
    2024-02-01 | PDF
    This research covers six types of land uses of greater interest to DOTD as a pilot study. They are apartments, urgent care facilities, dollar stores, car washes, drive-thru banks, and drive-thru daiquiri/boil shops.
  • Improved Systematic Analysis To Predict Roadway Safety Performance
    Improved Systematic Analysis To Predict Roadway Safety Performance
    Wang, Haizhong ;
    Li, Xiugang
    2024-02-01 | PDF
    This study presents the results of a review and developed framework for implementing a data-driven safety analysis in Oregon Department of Transportation’s project development process. This framework considered existing best practice methodologies at the federal level from the FHWA and Transportation Research Board as well as those currently being ...
  • Impact of Utility Delays on Project Delivery
    Impact of Utility Delays on Project Delivery
    Piratla, Kalyan R. ;
    Le, Tuyen
    2024-02-01 | PDF
    Utility issues often cause significant delays in transportation construction projects. These delays result from several factors spanning multiple project phases. This project studied the current utility process at the South Carolina Department of Transportation (SCDOT) and provided recommendations to minimize overall project delays. The project wor ...
  • Advanced Air Mobility Opportunities Challenges and Research Needs for the State of California 20232030
    Advanced Air Mobility: Opportunities, Challenges, and Research Needs for the State of California (2023–2030)
    Cohen, Adam ;
    Shaheen, Susan
    2024-02-01 | PDF
    Advanced air mobility (AAM) is a broad concept that enables consumers access to air mobility, goods delivery, and emergency services through an integrated and connected multimodal transportation network. AAM can provide short-range urban, suburban, and rural flights of about 50-miles and mid-range regional flights up to a several hundred miles. Sta ...
  • Artificial Intelligence Framework for Crosswalk Detection Across Massachusetts
    Artificial Intelligence Framework for Crosswalk Detection Across Massachusetts
    Apostolov, Atanas ;
    Xie, Yuanchang
    2024-02-01 | PDF
    The goal of this project was to develop an artificial intelligence (AI) framework to detect crosswalk locations across the state of Massachusetts, as well as their type classification (continental, parallel lines, or solid) and location category (intersection, midblock, or driveway). Aerial images downloaded from MassGIS were annotated, and these w ...
  • Support for the ISTREET Implementing Solutions from Transportation Research and Evaluation of Emerging Technologies Testbed
    Support for the I-STREET™ (Implementing Solutions from Transportation Research and Evaluation of Emerging Technologies) Testbed
    Elefteriadou, Lily ;
    Manjunatha, Pruthvi
    2024-02-01 | PDF
    The University of Florida (UF) and its Transportation Institute (UFTI), the Florida Department of Transportation (FDOT), and the City of Gainesville (CoG) have partnered to create I-STREETTM (Implementing Solutions from Transportation Research and Evaluation of Emerging Technologies). The principal objective of the three partners in developing I-ST ...
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