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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 1541 - 1560 of 35452 results
  • The Effects of Highway Improvement Projects on Nearby Business Activity
    The Effects of Highway Improvement Projects on Nearby Business Activity
    Wexler, Noah ;
    Fan, Yingling
    2023-08-01 | PDF
    This report analyzes how state-funded highway improvement projects in the seven county Twin Cities metropolitan area affected businesses in adjacent Census Tracts. We first identify demographic factors associated with the temporal and financial prioritization of some projects over others, finding that the per capita income of a Census Tract is asso ...
  • Achieving Efficiencies Within ODOT With the Event Streaming Platform
    Achieving Efficiencies Within ODOT With the Event Streaming Platform
    Crow, Mallory ;
    Avery, Paul A
    2023-08-01 | PDF
    The goal of this research is to achieve efficiencies within ODOT for the Event Streaming Platform (ESP). This research queried potential Use Case data from several of the divisions and two of the districts at ODOT with the goal of identifying current tasks that may benefit from automation, tasks that are redundant or use multiple systems to draw a ...
  • Ohio Department of Transportation District Highway Maintenance Research OnCall Task 07 Radar Emplacement Prediction Tool Exploration Recommendations
    Ohio Department of Transportation District Highway Maintenance Research On-Call Task 07: Radar Emplacement Prediction Tool Exploration & Recommendations
    Ramaswami, Adithya G ;
    McCrink, Matthew H
    2023-08-01 | PDF
    Emerging autonomous aircraft require unique infrastructure to provide vital information to ensure they remain well-clear of other flying objects. While there are many systems designed to provide such functionality, termed detect and avoid (DAA), ground-based radars have emerged as one of the most promising technical solutions to this challenging pr ...
  • Achieving Efficiencies Within ODOT With the Event Streaming Platform Fact Sheet
    Achieving Efficiencies Within ODOT With the Event Streaming Platform [Fact Sheet]
    Crow, Mallory ;
    Avery, Paul A
    2023-08-01 | PDF
    The goal of this project is to identify efficiencies across ODOT for the ESP. Future application needs and data automation processes must be defined based on current ODOT personnel activity workflows, repetitive tasks, and activities and integration of cross-process and internal organization collaboration. Use cases and statements of work (SOW) mus ...
  • District Highway Maintenance Research OnCall ROC Task 07 Radar Emplacement Prediction Tool Exploration and Recommendations Fact Sheet
    District Highway Maintenance Research On-Call (ROC) - Task 07: Radar Emplacement Prediction Tool Exploration and Recommendations [Fact Sheet]
    Ramaswami, Adithya G ;
    McCrink, Matthew H
    2023-08-01 | PDF
    Emerging autonomous aircraft require unique infrastructure to provide vital information to ensure they remain well-clear of other flying objects. While there are many systems designed to provide such functionality, termed detect and avoid (DAA), ground-based radars have emerged as one of the most promising technical solutions to this challenging pr ...
  • District Highway Maintenance Research OnCall ROC Task3 ODOT Maintenance Workflow
    District Highway Maintenance Research On-Call (ROC) –Task#3 ODOT Maintenance Workflow
    Schroeder, Bastian ;
    Rowe, Glenn
    2023-08-01 | PDF
    ODOT funded this study to investigate maintenance scheduling practices in the US and search for potential software systems that are capable of alleviating the challenges of maintenance scheduling. The project conducted a national scan and extensive agency outreach to evaluate existing approaches. It further completed interviews with ODOT staff and ...
  • District Highway Maintenance Research OnCall ROC Task3 ODOT Maintenance Workflow Fact Sheet
    District Highway Maintenance Research On-Call (ROC) –Task#3 ODOT Maintenance Workflow [Fact Sheet]
    Schroeder, Bastian ;
    Rowe, Glenn
    2023-08-01 | PDF
    This project investigated Ohio DOT’s (ODOT) existing workflow and needs for scheduling maintenance activities. ODOT conducts biweekly inspections and records roadway defects using ArcGIS Field Maps. Sources of maintenance work items also include periodic maintenance work, other collector apps for different asset types (i.e., culverts) and phone cal ...
  • Innovative Methods to Strengthen Internal KYTC Communications
    Innovative Methods to Strengthen Internal KYTC Communications
    Marks, P Gayle ;
    Jasper, Jeff
    2023-08-01 | PDF
    Communication is the linchpin of every organization. Poor communication leads to inefficiencies, frustration among staff, and employee disaffection and disengagement. Although some state transportation agencies have adopted comprehensive strategic plans for internal communications, many have taken a more piecemeal approach, with some Offices and un ...
  • Evaluating the Use of a NearMiss Reporting Program to Enhance Employee Safety Performance
    Evaluating the Use of a Near-Miss Reporting Program to Enhance Employee Safety Performance
    Dadi, Gabriel B. ;
    Taherpour, Farshid
    2023-08-01 | PDF
    Using safety incidents and crashes to improve safety performance is an outdated and reactive practice in safety and health programs. One component of a modern approach to safety is a near-miss reporting program. This type of program tracks close calls or near misses that do not result in an incident or crash, but which often can be an early indicat ...
  • Deep Learning Software for Traffic State Prediction
    Deep Learning Software for Traffic State Prediction
    Bhattacharya, Sambit ;
    Park, Hyoshin
    2023-08-01 | PDF
    As urban populations continue to grow, traffic congestion has become an increasingly pressing issue for drivers, leading to a greater demand for advanced navigation aids and traffic management solutions. Real-time traffic information, advanced traffic signal control strategies, and the integration of various data sources can play a crucial role in ...
  • North Carolina Center of Excellence for Mobility and Congestion Summary
    North Carolina Center of Excellence for Mobility and Congestion [Summary]
    University of North Carolina (System). Institute for Transportation Research and Education
    2023-08-01 | PDF
    As urban populations continue to grow, traffic congestion has become an increasingly pressing issue for drivers, leading to a greater demand for advanced navigation aids and traffic management solutions. Real-time traffic information, advanced traffic signal control strategies, and the integration of various data sources can play a crucial role in ...
  • Literature Review Synthesizing the Current and Potential ATMA Applications
    Literature Review Synthesizing the Current and Potential ATMA Applications
    Miller, Erika ;
    Young, Chandler
    2023-08-01 | PDF
    There are numerous applications of the Autonomous Maintenance Technology (AMT) that have yet to be fully utilized or widely shared. There are many slow-moving operations conducted by Departments of Transportation (DOTs) with an attenuator (e.g., work zone set up, operations, take down, repairs, mowing, sweeping), platooning of two or more vehicles ...
  • Digitizing Traffic Control Infrastructure for Autonomous Vehicles AV Summary
    Digitizing Traffic Control Infrastructure for Autonomous Vehicles (AV) [Summary]
    Steele, Joanne ;
    Wu, Jason
    2023-08-01 | PDF
    High precision road maps are a crucial component to facilitating autonomous driving techniques. Autonomous vehicles (AVs) are experiencing exponential growth. According to the latest forecast from IHS Markit, over 33 million AVs will be on the road globally by 2040, posing a higher requirement to ensure AVs’ driving safety. Although current AVs rel ...
  • Increase the Allowable Content of Recycled Crushed Concrete Aggregate in Class P Concrete
    Increase the Allowable Content of Recycled Crushed Concrete Aggregate in Class P Concrete
    Drimalas, Thanos ;
    Lute, Racheal D
    2023-08-01 | PDF
    Over 140 million tons of recycled concrete aggregate (RCA) are produced in the United States per year (ACPA, 2009), and this material has been used in a host of transportation infrastructure applications, including fills, embankments, bases, subbases, and concrete pavements. Currently, TxDOT limits the maximum amount of recycled crushed concrete fi ...
  • Enhancing Pavement Marking Management Practices in Wyoming
    Enhancing Pavement Marking Management Practices in Wyoming
    Tajnin, Mst Rahanuma ;
    Farid, Ahmed
    2023-08-01 | PDF
    Pavement markings safeguard road users, and maintaining adequate retroreflectivity is crucial for ensuring road safety. As the Wyoming Department of Transportation (WYDOT) performs routine application of pavement markings, there is a pressing need for a comprehensive management program to ensure their cost-effective management. So, this report focu ...
  • WSDOT Maintenance Performance Measure Algorithms
    WSDOT Maintenance Performance Measure Algorithms
    Shrestha, Kishor
    ORCID ICON IMG
    2023-08-01 | PDF
    This research project focuses on deteriorating roadway asset conditions, emphasizing the challenges encountered by the roadway maintenance division of the Washington State Department of Transportation (WSDOT). The project goal is to develop algorithms for prediction models that will forecast the levels of service (LOS) performance conditions of six ...
  • Evaluation of Hybrid Rubber Modified Asphalt Mixtures and Pavements A Case Study in Virginia
    Evaluation of Hybrid Rubber Modified Asphalt Mixtures and Pavements: A Case Study in Virginia
    Habbouche, Jhony ;
    Nair, Harikrishnan
    2023-08-01 | PDF
    Several state departments of transportation have recognized the benefits of modified asphalt mixtures in resisting multiple modes of climate-and load-induced distresses in flexible pavements. Throughout the past 50 years, asphalt binders have been modified with various components such as styrene-butadiene-styrene (SBS) polymers, ground tire rubber, ...
  • Pullout Resistance of Reinforcement of Lightweight Cellular Concrete Fill
    Pullout Resistance of Reinforcement of Lightweight Cellular Concrete Fill
    Han, Jie ;
    Ye, Yuqiu
    2023-08-01 | PDF
    Lightweight Cellular Concrete (LCC) (also called foam or gas concrete) is a special construction material, which is typically composed of portland cement, water, and air voids created by a foaming agent. This material has been increasingly used as a backfill material for geotechnical applications. This report presents a series of laboratory tests c ...
  • Performance Evaluation of SP95 and SP125 Superpave Mixtures Summary
    Performance Evaluation of SP-9.5 and SP-12.5 Superpave Mixtures [Summary]
    Wilko, Wayne ;
    Hu, Sheng
    2023-08-01 | PDF
    The objective of this project was to compare the performance of SP-9.5/FC-9.5 to SP-12.5/FC-12.5 Superpave asphalt mixtures and then determine if SP-9.5/FC-12.5 mixtures were at least equivalent to SP-12.5/FC-12.5 mixtures in terms of cracking and rutting resistance, including durability, for use in heavy traffic volume conditions.
  • Pullout Resistance of Reinforcement of Lightweight Cellular Concrete Fill Technical Summary
    Pullout Resistance of Reinforcement of Lightweight Cellular Concrete Fill [Technical Summary]
    Han, Jie ;
    Ye, Yuqiu
    2023-08-01 | PDF
    This report presents a series of laboratory tests to evaluate the material properties of LCC and the pullout resistances of geogrid and steel strip in LCC specimens cast in the field. Based on the test results, the following conclusions can be drawn: The average wet densities of LCC ranged from 30 to 36 pcf at the age of 28 days and the average dry ...
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