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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 521 - 540 of 35440 results
  • Effective Methods to Safely Communicate with Commercial Motor Vehicles Summary
    Effective Methods to Safely Communicate with Commercial Motor Vehicles [Summary]
    Edara, Praveen
    ORCID ICON IMG
    2024-12-01 | PDF
    One critical aspect of a proactive approach to improving the safety of commercial motor vehicles (CMVs) involves how to communicate with CMV drivers safely and effectively through an electronic notification system (ENS). The objectives of this project are to: 1) conduct a review of existing ENS methods in use by CMV drivers, trucking companies, and ...
  • TITAN An Interactive Webbased Framework for Transportation Data Integration and Analytics Phase 2 Summary
    TITAN – An Interactive, Web-based Framework for Transportation Data Integration and Analytics – Phase 2 [Summary]
    Adu-Gyamfi, Yaw
    ORCID ICON IMG
    2024-12-01 | PDF
    The TITAN project, now in its second phase, is a cutting-edge, interactive web-based framework designed for the warehousing, integration, analytics, and visualization of transportation data. This phase has successfully implemented resilient and scalable database architectures, enabling rapid storage and retrieval of massive datasets, which are crit ...
  • HFST Review Summary
    HFST Review [Summary]
    Bledsoe, James ;
    Alhasan, Ahmad
    2024-12-01 | PDF
    The Missouri Department of Transportation (MoDOT) has implemented High Friction Surface Treatment (HFST) in various locations across the state to reduce roadway departure crashes by improving pavement friction. To prevent premature failure and to ensure that the HFST performs adequately throughout the design life, this study evaluates the pavement ...
  • TITAN An Interactive Webbased Framework for Transportation Data Integration and Analytics Phase 2
    TITAN – An Interactive, Web-based Framework for Transportation Data Integration and Analytics – Phase 2
    Adu-Gyamfi, Yaw ;
    Edara, Praveen K.
    2024-12-01 | PDF
    The TITAN project, now in its second phase, is a cutting-edge, interactive web-based framework designed for the warehousing, integration, analytics, and visualization of transportation data. This phase has successfully implemented resilient and scalable database architectures, enabling rapid storage and retrieval of massive datasets, which are crit ...
  • Guidance for Incorporating Work Zone Data within Traffic Management Operations
    Guidance for Incorporating Work Zone Data within Traffic Management Operations
    Knickerbocker, Skylar ;
    Ravichandra-Mouli, Varsha
    2024-12-01 | PDF
    The ability for agencies to notify vehicles that they are approaching a work zone has the potential to reduce crashes by increasing motorists’ awareness of the conditions. A critical element of this ability involves providing accurate work zone information and reducing the potential for false alerts that motorist ignore, which can be accomplished t ...
  • Guidance for Incorporating Work Zone Data within Traffic Management Operations Brief
    Guidance for Incorporating Work Zone Data within Traffic Management Operations [Brief]
    Knickerbocker, Skylar ;
    Ravichandra-Mouli, Varsha
    2024-12-01 | PDF
    The ability for agencies to notify vehicles that they are approaching a work zone has the potential to reduce crashes by increasing motorists’ awareness of the conditions. A critical element of this ability involves providing accurate work zone information and reducing the potential for false alerts that motorist ignore, which can be accomplished t ...
  • Design Guidelines and Mitigation Strategies for Reducing Sedimentation of MultiBarrel Culverts Brief
    Design Guidelines and Mitigation Strategies for Reducing Sedimentation of Multi-Barrel Culverts [Brief]
    Muste, Marian
    ORCID ICON IMG
    2024-12-01 | PDF
    The accumulation of sediments at culverts is a chronic operational issue, frequently occurring at multi-barrel culverts located in erosion-prone watersheds. Sediment deposits can develop rapidly, impairing the culvert’s capacity to convey design flows and potentially leading to damage to both transportation infrastructure (e.g., road and culvert ov ...
  • Advancing SelfEnforcing Streets Phase 1 The Relationship Between Roadway Environment and Crash Severity
    Advancing Self-Enforcing Streets Phase 1: The Relationship Between Roadway Environment and Crash Severity
    Talebpour, Alireza ;
    Zhang, Yanlin
    2024-12-01 | PDF
    The concept of self-enforcing roadways (SER) has been proposed as a speed management strategy to achieve harmony in drivers’ speed selection and to address safety issues associated with excessive speeding. While numerous examples of SER implementation exist outside of the United States (particularly in European countries), this concept is fairly ne ...
  • Load Rating of Reinforced Concrete Slab Bridges Using Field Testing
    Load Rating of Reinforced Concrete Slab Bridges Using Field Testing
    Andrawes, Bassem ;
    Colombani, Isaias A
    2024-12-01 | PDF
    Bridge load-rating analysis is typically used to assess the safe load-carrying capacity of bridges. However, in many cases, this analytical approach was proven to be too conservative, which leads to unnecessary bridge postings and road restrictions. In such cases, field testing is sought as a more reliable method for assessing the structural condit ...
  • Investigation of UAS Platform and Personnel Development and Preparation through Lab and Site Testing
    Investigation of UAS Platform and Personnel Development and Preparation through Lab and Site Testing
    Almasi, Pouya ;
    Zhang, Qianyun
    2024-12-01 | PDF
    We propose a pilot program to initialize the UAS-based bridge inspection program in component level to enhance the bridge inspection practice in New Mexico State. In the proposed program, UAS-based bridge inspection strategies, data interpretation frameworks, and implementation software for individual NBI classified bridge components will be develo ...
  • Zuni Bowl and One Rock Check Dam Research Phase 1
    Zuni Bowl and One Rock Check Dam Research – Phase 1
    Rio Grande Return
    2024-12-01 | PDF
    The Zuni Bowl and One Rock Check Dam Research Project, commissioned by the New Mexico Department of Transportation (NMDOT) and conducted by Rio Grande Return, investigates the effectiveness of Zuni Bowl and One Rock Dam structures as erosion control solutions for drainage issues affecting roadway infrastructure. This Phase 1A study aims to evaluate ...
  • Cost Effective Alternatives for Mitigating Debris and Environmental Impacts Around Bridge Piers Fact Sheet
    Cost Effective Alternatives for Mitigating Debris and Environmental Impacts Around Bridge Piers [Fact Sheet]
    Witter, Jonathan D ;
    Raudenbush, Zane
    2024-12-01 | PDF
    This research study addressed three key problems: 1) identifying safer, timely, and cost-effective solutions for removing accumulated debris from bridge piers, 2) designing and implementing countermeasures to prevent debris accumulation, and 3) finding technological solutions to enhance bridge inspection, scour detection, and mapping of river cross ...
  • Cost Effective Alternatives for Mitigating Debris and Environmental Impacts Around Bridge Piers
    Cost Effective Alternatives for Mitigating Debris and Environmental Impacts Around Bridge Piers
    Witter, Jonathan D
    ORCID ICON IMG
    2024-12-01 | PDF
    This research study addressed three key problems: 1) identifying safer, timely, and cost-effective solutions for removing accumulated debris from bridge piers, 2) designing and implementing countermeasures to prevent debris accumulation, and 3) finding technological solutions to enhance bridge inspection, scour detection, and mapping of river cross ...
  • Development of a Visualization Sharing and Processing Platform for LargeScale Highway Point Cloud Data
    Development of a Visualization, Sharing, and Processing Platform for Large-Scale Highway Point Cloud Data
    Remache-Patino, Bryan ;
    Gerasimidis, Simos
    2024-12-01 | PDF
    This study presents the development and validation of a web-based platform designed for the visualization, sharing, and processing of large-scale LiDAR point cloud data tailored to the operational needs of MassDOT. Leveraging open-source technologies, particularly Potree, the platform addresses key challenges associated with the management of high- ...
  • Financial Feasibility of Maglev System in Texas
    Financial Feasibility of Maglev System in Texas
    Cline, Michael E. ;
    Easton, Carla
    2024-12-01 | PDF
    A brief description of different modes possible in the proposed TransTexas Corridor (TTC) is initiated. The main modal alternatives, which include highway, high speed rail, and maglev are discussed in detail. Alternatives for financing the TTC infrastructure are discussed. A detailed financial feasibility of a maglev system along a hypothetical cor ...
  • Investigating Prime Versus Curing Where When and Why Project Summary Report
    Investigating Prime Versus Curing: Where, When, and Why [Project Summary Report]
    Goehl, Darlene ;
    Bierman, Carl
    2024-11-30 | PDF
    The objective of this research project was to determine where, when, and why a prime or cure is needed for a pavement layer. Some materials can be used for multiple purposes, such as to prime, bond, or help cure; however, the rates and timing of use may change depending on why the material is being used. Guidance is needed to help designers, inspec ...
  • 07183 Develop Crash Modification Factors for Super 2 Highways Brief
    0-7183: Develop Crash Modification Factors for Super 2 Highways [Brief]
    Brewer, Marcus A. ;
    Geedipally, Srinivas R.
    2024-11-30 | PDF
    Super 2 highways have been used across Texas for over 20 years, providing operational and safety benefits to rural two-lane highways at a lower cost than widening such facilities to four lanes. More Super 2 highways are planned as the demand increases on the state highway system. Previous research has provided insights on Super 2 safety, but update ...
  • Assess Driver Distraction in an Era of Rapid Technological Change for Digital Advertising Billboards Project Summary Report
    Assess Driver Distraction in an Era of Rapid Technological Change for Digital Advertising Billboards [Project Summary Report]
    Pike, Adam ;
    Shirinzad, Maryam
    2024-11-30 | PDF
    This research project focused on the degree of driver distraction caused by typical and digital advertising signs and potential safety impacts of that distraction. The project included a comprehensive state-of-the-practice review, crash investigation, and on-road human factors evaluation. The research team located each of the digital billboards in ...
  • Project Summary Fiber Optic Feasibility and Partnership Study
    Project Summary: Fiber Optic Feasibility and Partnership Study
    Minnesota Department of Transportation  ...
    2024-11-21 | PDF
    The Fiber Optic Feasibility and Partnership Study aimed to develop a strategic plan for future fiber connectivity by utilizing public-private partnerships. The project involved the following tasks: • Reviewed state policy and legal barriers. • Assessed the state's current right-of-way assets. • Identified fiber and telecommunications gaps and needs ...
  • MnDOT Traffic Camera Maximizer Summary
    MnDOT Traffic Camera Maximizer [Summary]
    Minnesota. Department of Transportation
    2024-11-20 | PDF
    This project involved the implementation of a Traffic Camera Maximizer (TCM).The Traffic Camera Maximizer was proposed to broaden the reach of the following MnDOT assets to improve situational awareness of driving conditions across the state.
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