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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 3081 - 3100 of 36873 results
  • Evaluation of Embedded Pile Resistance of Scour Critical Bridges Research Project Capsule 223ST
    Evaluation of Embedded Pile Resistance of Scour Critical Bridges: Research Project Capsule [22–3ST)
    Abu-Farsakh, Murad Y. ;
    Rupnow, Tyson
    2022-06-01 | PDF
    The main objective of this research study is to explore methods and techniques to accurately determine the capacity of in-place piles for in-service bridge structures, especially for those that are under severe scour conditions. Many existing scour critical bridges were built decades ago, and pile setup phenomenon is significant. Proposed methodolo ...
  • Snowplow Operations Management System Final Report
    Snowplow Operations Management System: Final Report
    Shahandashti, Mohsen ;
    Mattingly, Stephen
    2022-06-01 | PDF
    Winter road maintenance accounts for approximately 20% of state departments of transportation’s maintenance budgets; states and local highway agencies spend an average of $2.3 billion on winter operations every year. Nevertheless, over 5 million vehicle crashes occur in the U.S. each year, and approximately 21% of these crashes happen in the presen ...
  • Buried Concrete Barrier Ends in Washington State
    Buried Concrete Barrier Ends in Washington State
    Abbott, Paul ;
    van Schalkwyk, Ida
    2022-06-01 | PDF
    There are over 400 buried concrete barrier ends on Washington state routes. While buried concretebarrier ends are no longer included in standard plans, it is not well understood how vehicles are interacting with these structures. An inventory of buried concrete barrier ends was matched with crash data sourced from the WSDOT Engineering Crash Datama ...
  • Reduce VehicleAnimal Collisions With Installation of Small Animal Exclusion Fencing
    Reduce Vehicle-Animal Collisions With Installation of Small Animal Exclusion Fencing
    Markle, Tricia ;
    Stapleton, Seth
    2022-06-01 | PDF
    The presence of small animals on Minnesota’s roadways presents a public safety concern and negatively impacts wildlife populations. For the past four years, the Minnesota Zoo has partnered with the Minnesota Department of Transportation to test and evaluate the effectiveness of standard plans for small animal exclusion fencing, with the goal of red ...
  • Steel Bridge Coating Inventory for 2022
    Steel Bridge Coating Inventory for 2022
    Goff, Christopher ;
    Palle, Sudhir
    2022-06-01 | PDF
    The Kentucky Transportation Cabinet (KYTC) has replaced the lead-based coatings on many of its steel bridges over the past 30 years. In the 1980s and 1990s, inorganic zinc primers with vinyl topcoats were the go-to option for coating replacement projects. Since 2000, the typical choice for these projects has been organic zinc primers that are part ...
  • Utilization of Lidar Technology When to Use It and Why
    Utilization of Lidar Technology — When to Use It and Why
    McIntosh, Levi ;
    Rister, Brad
    2022-06-01 | PDF
    Lidar technologies can assist transportation agencies during the design, construction, and maintenance phases of transportation projects. While Lidar has numerous applications, successfully deploying Lidar technologies is only possible if agencies have a solid understanding of their use cases and potential limitations. This report offers guidance t ...
  • Novel Methods for Adding Rejuvenators in Asphalt Mixtures with High Recycled Binder Ratios
    Novel Methods for Adding Rejuvenators in Asphalt Mixtures with High Recycled Binder Ratios
    Yin, Fan ;
    Langan, Mariah
    2022-06-01 | PDF
    The overall objective of this study was to explore three novel rejuvenator application methods using the emulsion and foaming technologies and determine their impacts on the workability and long-term cracking resistance of high-reclaimed asphalt pavement (RAP) asphalt mixtures. To that end, a comprehensive experimental plan was developed, which con ...
  • Improving Scaling Resistance of Pavement Concrete Using Titanium Dioxide TiO2 and Nanosilica
    Improving Scaling Resistance of Pavement Concrete Using Titanium Dioxide (TiO2) and Nanosilica
    Huang, Dan ;
    Velay-Lizancos, Mirian
    2022-06-01 | PDF
    This project focused on the evaluation of the influence of nanoadditives on the hydration kinetics, mechanical properties, and durability of concretes with and without supplementary cementitious materials (SCMs). The types of nanomaterials used in the course of this study included nano-titanium dioxide (nano-TiO2) and two forms of nanosilica. A ser ...
  • Stream Wetland Mitigation Forecasting Developing a Predictive Model for Faster Project Delivery and CostSavings
    Stream & Wetland Mitigation Forecasting: Developing a Predictive Model for Faster Project Delivery and Cost-Savings
    Toman, Elizabeth Myers ;
    Xu, Haiqing
    2022-06-01 | PDF
    Wetlands and streams provide significant ecological and societal services. Accurate mapping of their locations is necessary for ODOT to plan for avoidance or mitigation efforts and costs. The National Wetland Inventory (NWI) provides the best nationwide spatial database of wetlands, but the database has not been updated for up to four decades and m ...
    Supporting Files
  • Evaluation of Polymer Binder Technisoil G5 in Concrete Mixture
    Evaluation of Polymer Binder Technisoil G5® in Concrete Mixture
    Saadeh, Shadi ;
    Katawal, Pritam
    2022-06-01 | PDF
    Plastic is everywhere, and with its increasing use in so many everyday materials, the production and demand of plastic has skyrocketed. Unfortunately, this has resulted in the accumulation of a mammoth amount of plastic waste and adverse effects on the environment. To optimize the huge amount of materials required by the pavement industry each year ...
  • Stream Wetland Mitigation Forecasting Developing a Predictive Model for Faster Project Delivery and CostSavings Fact Sheet
    Stream & Wetland Mitigation Forecasting: Developing a Predictive Model for Faster Project Delivery and Cost-Savings [Fact Sheet]
    Toman, Elizabeth Myers ;
    Xu, Haiqing
    2022-06-01 | PDF
    Wetlands and streams provide numerous ecosystems services and are protected under federal and state laws. These regulations require permits when fill material is discharged into regulated streams and wetlands from roadway construction and maintenance activities, which also can require compensatory mitigation. Environmental review, permitting, and m ...
  • Development of Congestion Factors for Adjusting Traffic Counts during Congested Periods Phase 1 Literature Review and Survey Summary
    Development of Congestion Factors for Adjusting Traffic Counts during Congested Periods: Phase 1 — Literature Review and Survey [Summary]
    Florida. Department of Transportation. Civil Integrated Management Office
    2022-06-01 | PDF
    Florida State University researchers conducted a comprehensive literature review to collect information on traffic data collection using ILDs, particularly during congested periods.
  • Reducing Vehicle Miles Traveled VMT Associated with K12 Public Schools How Well Do New School Sites in California Incorporate Mitigation Measures Known to Reduce VMT
    Reducing Vehicle Miles Traveled (VMT) Associated with K-12 Public Schools: How Well Do New School Sites in California Incorporate Mitigation Measures Known to Reduce VMT?
    Vincent, Jeffrey M ;
    Maves, Sydney
    2022-06-01 | PDF
    California law (SB 743) requires school districts to measure the impact of school construction on the production of greenhouse gas emissions (GHG) and identify feasible mitigation measures that eliminate or substantially reduce the number of vehicle miles traveled (VMT) generated. This study analyzes 301 new schools constructed between 2008-2018 wi ...
  • Wet Pond Maintenance for Phosphorus Retention
    Wet Pond Maintenance for Phosphorus Retention
    Taguchi, Vinicius J ;
    Janke, Benjamin D
    2022-06-01 | PDF
    This report considers the outcomes of the pond maintenance strategies of sediment treatment to reduce internal loading of phosphorus, mechanical aeration, alteration of pond outlet to pull water off the bottom, reduction of wind sheltering, dredging, outlet treatment by iron enhanced sand filtration and reduction of phosphorus loading from the wate ...
  • NonDestructive Evaluation and Numerical Modeling of Unrated Installed Crash Barriers
    Non-Destructive Evaluation and Numerical Modeling of Unrated Installed Crash Barriers
    Pokhrel, Ashesh ;
    Sorensen, Andrew D.
    2022-06-01 | PDF
    Finite element models (FEM) for Midwest Guardrail System (MGS) and constant UDOT slope 42-in and 54-in cast-in-place (CIP) fixed barriers are created in LS-DYNA. The FEM of a Chevrolet Silverado pickup truck is used to perform a Test Level 3 (TL-3) crash simulation for the MGS. FEMs of a Ford 800 single unit truck (SUT) and a tractor-trailer are us ...
  • Infrastructure Owner Operator IOO Strategic Roadmap for Accelerated Adoption of Automated Vehicles AVs
    Infrastructure Owner Operator (IOO) Strategic Roadmap for Accelerated Adoption of Automated Vehicles (AVs)
    Avery, Paul ;
    Letourneau, Mathew
    2022-06-01 | PDF
    The Automated Vehicle Pooled Fund Study (AV PFS) commissioned the development of the Infrastructure Owner Operator (IOO) Strategic Roadmap for Accelerated Adoption of AVs Project to consolidate guidance and identify programs that support the ability for IOOs to nationally move forward towards integrating AVs into the surface transportation ecosyste ...
  • DataDriven Prioritization and Empirical Predictions for Bridge Scour in Nebraska
    Data-Driven Prioritization and Empirical Predictions for Bridge Scour in Nebraska
    Awg Bolhasan, Awgku Ahmad Hashim B ;
    Wood, Richard L.
    2022-06-01 | PDF
    The effect of scour at the bridge substructure results in an increase in the vulnerability of the overall bridge stability. Previous studies have found that current guidelines are often overly-conservative with respect to scour. This project aims to provide guidance on hydraulic modeling parameters and reasonable scour estimates specific to Nebrask ...
  • Building 360 Scanning and Reality Modeling
    Building 360 Scanning and Reality Modeling
    Bjork, Christopher ;
    Lovelace, Barritt
    2022-06-01 | PDF
    The ability to collect and utilize large amounts of data is transforming our world. Industries like healthcare, finance, energy, communication, and transportation are finding ways to utilize data to improve people’s lives. Processing software and inspection-specific asset management platforms are giving asset owners the ability to utilize this data ...
  • Pilot Inservice Performance Evaluation of Impact Attenuators in Washington State
    Pilot In-service Performance Evaluation of Impact Attenuators in Washington State
    Abbott, Paul ;
    Manchas, Brad
    2022-06-01 | PDF
    A pilot routine in-service performance evaluation (ISPE) was undertaken for impact attenuatorsfollowing the process outlined in NCHP 22-33. Controlled stop, rollover, vehicle mix, and secondary impacts on the roadside and roadway were evaluated as performance measures using data sourced from the Crash Location & Analysis System (CLAS) database and ...
  • Division of Operations Research OnCall ROC Task5 ODOT Overtime Management
    Division of Operations Research On-Call (ROC) Task#5 – ODOT Overtime Management
    Schroeder, Bastian ;
    Lim, Tiffany
    2022-06-01 | PDF
    ODOT funded this study to investigate existing overtime management practices in the US and search for potential automated systems that are capable of alleviating overtime management challenges. The project conducted a national scan and extensive agency outreach to evaluate existing systems. It further completed interviews with ODOT staff and develo ...
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