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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 1461 - 1480 of 36114 results
  • The Future of Airports A Vision of 2040 and 2070
    The Future of Airports: A Vision of 2040 and 2070
    Le Bris, Gaël ;
    Nguyen, Loup-Giang
    2024-01-01 | PDF
    This document is the result of that five-year process, and it is the second version of the research report on the future of airports at the 20- and 50-year horizons. It should be read as a guide to understand the challenges and opportunities ahead. It features tools and technical contents documenting trends and emerging issues. Finally, it contains ...
  • On the Adversarial Robustness of CameraBased 3D Object Detection
    On the Adversarial Robustness of Camera-Based 3D Object Detection
    Xie, Shaoyuan ;
    Li, Zichao
    2024-01-01 | PDF
    In recent years, camera-based 3D object detection has gained widespread attention for its ability to achieve high performance with low computational cost. However, the robustness of these methods to adversarial attacks has not been thoroughly examined, especially when considering their deployment in safety-critical domains like autonomous driving. ...
  • Repair or Strengthening of Bridge Decks with PartialDepth Precast Deck Panels
    Repair or Strengthening of Bridge Decks with Partial-Depth Precast Deck Panels
    Pantelides, Chris P. ;
    Briggs, Dylan T
    2024-01-01 | PDF
    The primary objectives of this research project involve: (a) forensic analysis of composite deck samples from the I-15 800 South bridge; (b) replication of non-composite specimens for testing; (c) destructive testing of retrofitted non-composite deck samples; and (d) recommended solutions for the repair of bridges affected by debonding of the cast- ...
  • Minnesota Drive Ramps Micro Surfacing Experimental Feature
    Minnesota Drive Ramps Micro Surfacing Experimental Feature
    Pavey, Andrew
    2024-01-01 | PDF
    During the 2020 construction season, the Alaska DOT&PF Central Region installed its first application of micro surfacing at 17 locations on Minnesota Drive ramps in the city of Anchorage. This treatment offers the potential to be a more economical solution to the typical mill and fill hot mix asphalt (HMA) treatment used to address rutted roads. Mi ...
  • Development of a Mobile App for Reporting Work Zone Intrusions
    Development of a Mobile App for Reporting Work Zone Intrusions
    Davis, Brian ;
    Morris, Nichole L.
    2024-01-01 | PDF
    Work zone intrusions represent a significant safety risk to workers. To help better understand these situations, the Minnesota Department of Transportation partnered with the University of Minnesota to create a method to document intrusion events. This information provides a deeper understanding of the circumstances under which these events occur a ...
  • Drivers Correctly Interpret Flashing Yellow Arrows for Left Turns Research Summary
    Drivers Correctly Interpret Flashing Yellow Arrows for Left Turns [Research Summary]
    Davis, Gary A. ;
    Lund, Victor
    2024-01-01 | PDF
    Permissive left turns, where a driver does not have a green arrow and must wait for a gap in oncoming traffic before turning, can be indicated by different traffic signal configurations. Flashing yellow arrows are becoming a preferred signal type in Minnesota and across the nation. New research provides traffic engineers with confidence that driver ...
  • Development of Traffic Video Analysis Tool for Highway Safety Performance Evaluation
    Development of Traffic Video Analysis Tool for Highway Safety Performance Evaluation
    Zhou, Huaguo ;
    Zhao, Zijie
    2024-01-01 | PDF
    Recent advances in computer vision techniques have enabled the use of traffic video data for valuable surrogate safety measures to improve highway safety evaluations. However, few tools specifically target abnormal traffic events like wrong-way driving (WWD) or illegal left turns. This research aims to develop a cost-effective video analytic tool, ...
  • Evaluation of Methods for UDOT Brine Tank Condition Assessment
    Evaluation of Methods for UDOT Brine Tank Condition Assessment
    Kami, Moein Ramezanpour ;
    Zhang, Keping
    2024-01-01 | PDF
    UDOT manages statewide above-ground storage tanks to store brine as deicing chemicals for the winter maintenance program. The polyethylene storage tanks will age under UV light, become brittle with low temperatures, creep, and develop cracks. Structural failures of brine tanks will not only impose safety hazards to surrounding tanks and UDOT person ...
  • TDOT RDS Data Quality Assurance and HighResolution Content Enhancement
    TDOT RDS Data Quality Assurance and High-Resolution Content Enhancement
    Barbour, William ;
    Baroud, Hiba
    2024-01-01 | PDF
    TDOT’s ITS radar detection system, spanning Tennessee’s urban interstates and highways, faced challenges with data quality and reliability, limiting its potential for advanced traffic management and analytics. This research aimed to enhance the system by standardizing configurations, recalibrating sensors, replacing outdated equipment, and implemen ...
  • Thermal Segregation Influence on Current Asphalt Mixtures
    Thermal Segregation Influence on Current Asphalt Mixtures
    Sebesta, Stephen ;
    Kim, Jinho
    2024-01-01 | PDF
    Thermal segregation during the construction of asphalt mixtures can result in the formation of low-density areas and a subsequent decrease in pavement life. Although the methods for measuring thermal segregation have remained largely unchanged, significant advancements have been made in asphalt mixture types and design methods over the past decade. ...
  • Development of Design Guidance for Smart Work Zone Systems
    Development of Design Guidance for Smart Work Zone Systems
    El-Rayes, Khaled ;
    Ouyang, Yanfeng
    2024-01-01 | PDF
    Smart work zone (SWZ) systems are designed to provide real-time roadway information to better inform motorists, encourage them to take alternate routes, reduce their frustrations, reduce roadway congestion, and enhance safety for motorists and workers. These SWZ systems have been recommended by multiple federal agencies as part of the Intelligent T ...
  • A Preliminary Cost Estimating Model for Transportation Projects
    A Preliminary Cost Estimating Model for Transportation Projects
    Piratla, Kalyan R. ;
    Le, Tuyen
    2024-01-01 | PDF
    As with any state highway agency (SHA), the construction needs exceed the budget limitations, which mandates that SCDOT prioritizes transportation project needs based on benefit/cost considerations. It is important to use every penny as wisely as possible. In such context, an early-stage cost estimate is imperative for evaluating the feasibility of ...
  • Review of Indiana Asphalt Binders InSitu PG Grade Asphalt Determination
    Review of Indiana Asphalt Binders (In-Situ PG Grade Asphalt Determination)
    Lee, Jusang M ;
    Pouranian, M Reza
    2024-01-01 | PDF
    In the face of multifaceted challenges, such as asphalt pavement deterioration and the introduction of new LTPPBind versions, the Indiana Department of Transportation (INDOT) initiated a pivotal research project focusing on three primary areas. First, the study examined the implications of Performance Grade (PG) binder selections on pavement perfor ...
  • Evaluation of WrongWay Driving Detection Technologies
    Evaluation of Wrong-Way Driving Detection Technologies
    Finley, Melisa D. ;
    Venglar, Steven P.
    2024-01-01 | PDF
    Wrong-way driving (WWD) crashes occur when a motorist either inadvertently or deliberately drives in the opposite direction of travel on a divided roadway. For this research project, Texas A&M Transportation Institute researchers assessed the state-of-the-practice regarding WWD detection technology, developed a standardized testing mechanism to ass ...
  • New Brunswick Innovation Hub Smart Mobility Testing Ground
    New Brunswick Innovation Hub Smart Mobility Testing Ground
    Jin, Peter J. ;
    Ge, Yi
    2024-01-01 | PDF
    In this project, the team led by Rutgers University's Center for Advanced Infrastructure and Transportation (CAIT), in collaboration with Iteris, Econsult Solutions, Gannett Fleming, and MBO Engineering, completed the construction and application deployment of the New Brunswick Innovation Hub Smart Mobility Testing Ground (SMTG), now named DataCity ...
  • Improved Signalized Intersection Performance Using Computer Vision and Artificial Intelligence Research Project Capsule 244SS
    Improved Signalized Intersection Performance Using Computer Vision and Artificial Intelligence: Research Project Capsule [24–4SS]
    Moomen, Milhan ;
    Rupnow, Tyson
    2024-01-01 | PDF
    The primary objectives of this research are to: • Assess the feasibility and accuracy of using computer vision technology for performance evaluation at signalized intersections. • Provide intersection video footage data captured by drones. • Use computer vision and artificial intelligence to automatically convert data from video recordings at selec ...
  • Improved Load Rating Procedures for Deteriorated Unstiffened Steel Beam Ends
    Improved Load Rating Procedures for Deteriorated Unstiffened Steel Beam Ends
    Provost, Aidan ;
    Tzortzinis, Georgios
    2024-01-01 | PDF
    This report contains the contents of the project to enhance load rating methods for assessing corroded unstiffened steel beam ends for the six New England States. The first task of the project was to collect and compile inspection reports information provided by DOTs within New England. The research team was able to carefully identify trends and pa ...
  • Understanding Aggressive Driving and Ways to Reduce It Phase 1
    Understanding Aggressive Driving and Ways to Reduce It – Phase 1
    Finley, Kari ;
    Hanson, Bridget
    2024-01-01 | PDF
    How aggressive driving is defined, what factors precipitate such behavior, and what strategies effectively prevent and reduce the incidence of aggressive driving behavior are not widely understood. The proposed research sought to address these gaps through a two-phase project. The purpose of this project was to support work in Phase 1. A literature ...
  • WebBased Tool To Advance Geotechnical Data Interchange and ReliabilityBased Site Characterization Research Project Capsule 242GT
    Web-Based Tool To Advance Geotechnical Data Interchange and Reliability-Based Site Characterization: Research Project Capsule [24-2GT]
    Gautreau, Gavin P. ;
    Rupnow, Tyson
    2024-01-01 | PDF
    This research will focus on innovative practices to improve geotechnical data management, highlighting the development and implementation of a web-based platform to efficiently visualize and interpret geotechnical data, and to eventually facilitate project delivery. A web-based platform can incorporate multiple types of geotechnical and geoenvironm ...
  • Evaluation of Louisiana Maintenance and Rehabilitation Treatment Decision Matrix for CostEffective and Timely Pavement Preservation Research Project Capsule 241P
    Evaluation of Louisiana Maintenance and Rehabilitation Treatment Decision Matrix for Cost-Effective and Timely Pavement Preservation: Research Project Capsule [24–1P]
    Wu, Zhong ;
    Rupnow, Tyson
    2024-01-01 | PDF
    The objective of this study is two fold. First, the study will review and evaluate the current PMS decision matrix and provide recommendations on the trigger values for different maintenance and rehabilitation treatment types based on mechanistic-empirical pavement design, pavement performance modeling, machine learning, decision-tree optimization, ...
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