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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 2901 - 2920 of 35959 results
  • Ohio HighwayRail Grade Crossing State Action Plan
    Ohio Highway-Rail Grade Crossing State Action Plan
    Ohio Rail Development Commission  ...
    2022-02-01 | PDF
    During 2021-2022, the Ohio Rail Development Commission (ORDC) and the Public Utilities Commission of Ohio (PUCO) developed the Ohio Highway-Rail Grade Crossing State Action Plan (SAP) for the State of Ohio. This document is an update to Ohio’s original plan that was published in 2011 and updated as of fiscal year (FY) 2016.The purpose of this plan ...
  • Minnesota Department of Transportation Innovation Strategy 2022
    Minnesota Department of Transportation: Innovation Strategy [2022]
    Minnesota. Department of Transportation. Office of Research & Innovation
    2022-02-01 | PDF
    The pace of change in our modern world is faster than at any time in human history. Evolutions in technology and society are forcing organizations from every sector to innovate and find new ways to respond and adapt. Innovation isn’t new to MnDOT— from being the first DOT to test autonomous vehicles in cold weather to providing real-time road condi ...
  • Assessment of Embedded Culvert Low Flow Hydraulics
    Assessment of Embedded Culvert Low Flow Hydraulics
    Sawosik, Ben ;
    Carter, Chloe
    2022-02-01 | PDF
    In 2010, New Hampshire adopted new rules for the permitting of stream crossings. One aspect of the new rules was that new culverts should be geomorphically sized and preferably have natural materials located at the stream crossing stream bed to better accommodate the passage of aquatic and other organisms. In culverts that are not open bottom, this ...
  • Evaluation of Concrete Pavement Buckling in Wisconsin
    Evaluation of Concrete Pavement Buckling in Wisconsin
    Rao, Shreenath ;
    Abdualla, Hesham
    2022-02-01 | PDF
    Buckling of concrete pavements is a serious problem in many states, but even more so in Wisconsin due to a combination of factors including climate, construction practices, maintenance practices, materials, and design. Although the incidences of buckling in concrete are fewer than other distresses such as cracking and spalling, they disproportionat ...
  • Evaluation of ALDOT Erosion Control Practices Using Rainfall Simulation
    Evaluation of ALDOT Erosion Control Practices Using Rainfall Simulation
    Donald, Wesley N. ;
    Fang, Xing
    2022-02-01 | PDF
    The rainfall simulator at the Auburn University Erosion and Sediment Control Test Facility (AU-ESCTF) was used to produce 2, 4, and 6 in. per hr rainfall intensities and has test plot dimensions of 8 ft. wide by 40 ft. long on a 3H:1V slope. Each rainfall experiment was an hour long with three sequential 20-minute rainfall intervals of increasing r ...
  • Inventorying San Francisco Bay Area Parking Spaces Technical Report Describing Objectives Methods and Results
    Inventorying San Francisco Bay Area Parking Spaces: Technical Report Describing Objectives, Methods, and Results
    Chester, Mikhail ;
    Helmrich, Alysha
    2022-02-01 | PDF
    The San Francisco Bay Area is one of the most progressive transportation regions in the deployment of high-capacity transit and use of policies to encourage active transportation. Yet like many other metro regions, there remains a dearth of knowledge on the abundance and location of parking infrastructure supply. Parking infrastructure remains one ...
  • Design of an Alternative Work Zone Attenuator Device
    Design of an Alternative Work Zone Attenuator Device
    Mandokhot, Mohit ;
    Karanjkar, Sayali
    2022-02-01 | PDF
    ODOT currently uses dump-trucks as shadow vehicles to mount crash attenuators in a Work Zone. When used in work zones, these dump trucks may become damaged under a crash, which may render them unavailable to support other operations. Additionally, an assessment of other nuanced facets such as shadow vehicle operator safety, safety of work zone occu ...
  • Design of an Alternative Work Zone Attenuator Device Fact Sheet
    Design of an Alternative Work Zone Attenuator Device [Fact Sheet]
    Mandokhot, Mohit ;
    Karanjkar, Sayali
    2022-02-01 | PDF
    ODOT currently uses dump-trucks as shadow vehicles to mount crash attenuators in a Work Zone. When used in work zones, these dump trucks may become damaged under a crash, which may render them unavailable to support other operations. Additionally, an assessment of other nuanced facets such as shadow vehicle operator safety, safety of work zone occu ...
  • Developing an Implementation Strategy for Virginia Department of Transportation Pavement Rehabilitation Design Using MechanisticEmpirical Concepts
    Developing an Implementation Strategy for Virginia Department of Transportation Pavement Rehabilitation Design Using Mechanistic-Empirical Concepts
    Nair, Harikrishnan ;
    Saha, Bipad
    2022-02-01 | PDF
    The Mechanistic-Empirical Pavement Design Guide (MEPDG) was developed with an objective to provide the highway community with a state-of-the-practice tool for the design of new and rehabilitated pavement structures. The Virginia Department of Transportation (VDOT) officially adopted the MEPDG for new construction for interstate and primary routes e ...
  • Prediction Model of VibrationInduced Settlement Due to Pile Driving
    Prediction Model of Vibration-Induced Settlement Due to Pile Driving
    Arboleda-Monsalve, Luis G. ;
    Nam, Boo Hyun
    2022-02-01 | PDF
    This report presents a method for predicting ground deformations caused by impact pile driving, which accounts explicitly for the attenuation characteristics of Central Florida-specific soil conditions. Currently, vibration limits are not linked to the amount of pile driving-induced deformations that soils will experience due to vibrations, which i ...
  • Remaining Service Life Asset Measure Phase 2
    Remaining Service Life Asset Measure, Phase 2
    Matias de Oliveira, Jhenyffer ;
    Khani, Alireza
    2022-02-01 | PDF
    The main objectives of phase 2 of this project were to obtain relevant data to calculate the percent remaining service life interval (PRSI) and two additional metrics and to perform Markov chain analysis and dynamic programming to determine how much time and funding is required to bring the system to a stable configuration, which allows for more co ...
  • Supply Chain Assessment of the Transportation Industrial Base Freight and Logistics
    Supply Chain Assessment of the Transportation Industrial Base: Freight and Logistics
    United States. Department of Transportation
    2022-02-01 | PDF
    The U.S. Department of Transportation (USDOT) developed this Freight and Logistics Supply Chain Assessment in response to Executive Order 14017: America’s Supply Chains. This sectoral assessment of the freight industrial base identifies and addresses current transportation supply chain vulnerabilities and challenges. It also identifies potential po ...
    Supporting Files
  • Pack Rust Mitigation Strategy Effectiveness
    Pack Rust: Mitigation Strategy Effectiveness
    Soriano Somarriba, Edgar Oscary ;
    Bowman, Mark D.
    2022-02-01 | PDF
    As of 2013, the damage caused by corrosion on highway bridges has been estimated to cost approximately 14 billion dollars annually, and this cost has been increasing over the years. Corrosion is one of the natural phenomena that has been slowly deteriorating infrastructure systems across the United States. One of the most problematic types of corro ...
  • Performance Evaluation of Connected Vehicle CV and Transportation Systems Management and Operations TSMO Projects in Florida
    Performance Evaluation of Connected Vehicle (CV) and Transportation Systems Management and Operations (TSM&O) Projects in Florida
    Alluri, Priyanka ;
    Salum, Jimoku H
    2022-02-01 | PDF
    Connected vehicle (CV) technologies and Transportation Systems Management and Operations (TSM&O) strategies are increasingly being considered by transportation agencies to improve the safety and mobility of the transportation network. To fully understand the potential benefits of CV and TSM&O initiatives, it is crucial to not only identify the perf ...
  • Earth Pressure Assessment and Optimization of Type7 GRS Walls Earth Pressure for Type7 GRS Wall
    Earth Pressure Assessment and Optimization of Type-7 GRS Walls – Earth Pressure for Type-7 GRS Wall
    Chang, Nien-Yin ;
    Nghiem, Hien Manh
    2022-02-01 | PDF
    The construction of Type-7 Barrier Geosynthetic Reinforced Soil Wall (T7B-GRSW), much like bridge abutments, bridge approach, and retaining walls, the adoption of Geosynthetic Reinforced Soil (GRS) technology provides much-needed space-saving. In the early 20th century, before the invention of GRS (or MSE) technology, earth retaining structures had ...
  • Use of Recycled Concrete Aggregate in Concrete Pavement Mixes
    Use of Recycled Concrete Aggregate in Concrete Pavement Mixes
    Yang, Zhifu ;
    Overall, Kevin
    2022-01-31 | PDF
    Natural virgin aggregates (NVAs)have become gradually exhausted across the state of Tennessee. There is a growing need for the Tennessee Department of Transportation (TDOT) to replace NVAs with more sustainable recycled concrete aggregates (RCAs).It is the intention of the project to quantitatively assess various RCAs available in Tennessee and to ...
  • Development of Cracking Condition Assessment System for Concrete Bridge Decks Using Image Processing Techniques
    Development of Cracking Condition Assessment System for Concrete Bridge Decks Using Image Processing Techniques
    Zhou, Shanglian ;
    Song, Wei
    2022-01-31 | PDF
    Modern society requires a sustainable, robust, and serviceable infrastructure system to promote social welfare and boost economy. To support such an infrastructure system, an efficient health monitoring framework is needed which can promptly detect the presence of defects and perform associated rehabilitation and maintenance. In civil infrastructur ...
  • DeepHyd A Deep LearningBased Artificial Intelligence Approach for the Automated Classification of Hydraulic Structures From LiDAR and Sonar Data
    DeepHyd: A Deep Learning-Based Artificial Intelligence Approach for the Automated Classification of Hydraulic Structures From LiDAR and Sonar Data
    Tang, Wenwu ;
    Chen, Shen-En
    2022-01-30 | PDF
    Monitoring the conditions of hydraulic structures such as bridges and culverts is essential in warranting the safety and sustainability of transportation infrastructure. This is particularly important for North Carolina as more than 8 percent of NC bridges have been found in poor conditions and need immediate maintenance. Lidar and sonar technologi ...
  • Synthesis of National Best Practices on Pedestrian and Bicycle Design Guidance and Technology Innovations
    Synthesis of National Best Practices on Pedestrian and Bicycle Design, Guidance, and Technology Innovations
    Gates, Timothy ;
    Qu, Tongbin Teresa
    2022-01-27 | PDF
    In order to accelerate progress towards the state’s Towards Zero Death vision, MDOT sponsored this research effort, Synthesis of National Best Practices on Pedestrian and Bicycle Design, Guidance, and Technology Innovations(OR19-072). The primary goal of this project was to assess national best practices related to pedestrian and bicyclist planning ...
  • Evolution of Pavement Friction and Macrotexture after Asphalt Overlay
    Evolution of Pavement Friction and Macrotexture after Asphalt Overlay
    Underwood, B. Shane ;
    Castorena, Cassie
    2022-01-26 | PDF
    A trend of observed increases in both the number and rate of total and wet crashes after resurfacing projects has become a safety concern for the NCDOT. Wet collision rates may increase due to a reduction in skid resistance under wet conditions. The precise amount of loss is dependent on many factors, but the consensus among experts is that pavemen ...
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