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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 821 - 840 of 36049 results
  • LWD DCP Testing for Pavement Foundation and Subbase
    LWD & DCP Testing for Pavement Foundation and Subbase
    Solaimanian, Mansour ;
    Guo, Xiaogang
    2024-11-01 | PDF
    This research effort was undertaken to establish test methods, limits, and protocols to implement lightweight deflectometer (LWD) and dynamic cone penetrometer (DCP) testing and acceptance criteria for Pennsylvania’s subgrade soil and unbound pavement layers. Historically, density-based criteria have been predominantly used to assess the subgrade/b ...
  • RFID and Wireless IoT Technologies for Transportation Maintenance Operations and Asset Management
    RFID and Wireless IoT Technologies for Transportation Maintenance Operations and Asset Management
    Xia, Tian ;
    Lee, Byung
    2024-10-31 | PDF
    This final report summarizes the results of the novel strategy for managing transportation resources, making use of radio-frequency identification (RFID) technology. Through the utilization of RFID's capacity for remote detecting, the system achieves real-time identification of transportation assets, resulting in substantial enhancements in operati ...
  • InterLaboratory Study ILS of Bituminous Concrete Balanced Mix Design BMD Tests for Use on VTrans Projects
    Inter-Laboratory Study (ILS) of Bituminous Concrete Balanced Mix Design (BMD) Tests for Use on VTrans Projects
    Mahoney, James ;
    Bernier, Alex
    2024-10-31 | PDF
    Many state departments of transportation across the US are in various stages and levels of implementation of performance testing for Balanced Mix Design (BMD). The tests are intended to provide data to the designer with the goal of developing a mix design that balances adequate resistance to rutting and stripping with resistance to thermal and stre ...
  • Final Project Report The 5Stage Workforce Development Lifecycle Project
    Final Project Report: The 5-Stage Workforce Development Lifecycle Project
    Belk, Ray L
    2024-10-31 | PDF
    This Final Project Report (FPR) addresses: 1. Description of the project. 2. The overall budget. 3. How the work performed met program criteria. 4. Results of the project. 5. Challenges and lessons learned.
  • Implementation Product Executive Summary of The FiveStage Workforce Development Lifecycle Project
    Implementation Product: Executive Summary of The Five-Stage Workforce Development Lifecycle Project
    Belk, Ray L
    2024-10-31 | PDF
    Implementation Product #1 (P1) addresses the following in matrix format: 1. A summary of technical assistance provided throughout the project. 2. Results of product validation. 3. Implementation success stories.
  • Develop Guidelines for Integration of UAS LiDAR and Photogrammetry to Enhance Land Surveying Capabilities Project Summary Report
    Develop Guidelines for Integration of UAS LiDAR and Photogrammetry to Enhance Land Surveying Capabilities [Project Summary Report]
    Starek, Michael J. ;
    Berryhill, Jacob
    2024-10-30 | PDF
    The researchers completed twelve UAS data collection field tests, ten at TxDOT district project sites and two at development test sites, using SfM and LiDAR. Two grades of LiDAR scanners were evaluated based on their ranging capabilities and quality of their position and orientation systems. Data collections were conducted across all four seasons i ...
  • City of Hamilton State Street Traffic Calming Project July 19October 15 2024
    City of Hamilton State Street Traffic Calming Project: July 19–October 15, 2024
    Madsen, Matthew ;
    Gleason, Rebecca
    2024-10-30 | PDF
    The Western Transportation Institute (WTI) has been coordinating with Bike Walk Montana and the Montana Department of Commerce’s Main Street Program to help small towns with pop-up projects aimed at slowing traffic to create safer streets. The Department of Commerce suggested opportunities for pop-up traffic calming in Hamilton, Montana, where City ...
  • Measuring the Relationship Between Transportation Insecurity Health Inequality and Health Access
    Measuring the Relationship Between Transportation Insecurity, Health Inequality, and Health Access
    Murphy, Alex ;
    Kirkwood, Maureen
    2024-10-29 | PDF
    Measuring the relationship between transportation insecurity, health inequality, and health access. October 29, 2024 APHA Annual meeting, Minneapolis, MN.
  • West Yellowstone Highway 20 Traffic Calming Project July 23rd October 15th 2024
    West Yellowstone Highway 20 Traffic Calming Project: July 23rd – October 15th, 2024
    Gleason, Rebecca ;
    Madsen, Matthew
    2024-10-25 | PDF
    The West Yellowstone Business Improvement Advisory Board (BIAB) reached out to the Western Transportation Institute (WTI) in fall 2023 to request help slowing traffic through W. Yellowstone, Montana, to create safer streets, especially for pedestrians. In October 2023, WTI met with Montana Department of Transportation (MDT) staff to discuss the pos ...
  • Informed Safety Mobility and Driver Comfort Enhancement Practices for Work Zones Learnings from HighFidelity Data
    Informed Safety, Mobility, and Driver Comfort Enhancement Practices for Work Zones: Learnings from High-Fidelity Data
    Mishra, Sabyasachee ;
    Golias, Mihalis M.
    2024-10-15 | PDF
    This study leverages high-fidelity observational data to analyze driver behavior and vehicle dynamics within work zones (WZs) on Tennessee’s interstate highways, aiming to evaluate critical aspects of safety, mobility, and driver comfort. Data were collected over several months from GPS, IMU sensors, and video recordings on commercial vehicles trav ...
  • Evaluate Logistics Sprawls Impacts on Ecommerce Travel Patterns
    Evaluate Logistics Sprawl's Impacts on E-commerce Travel Patterns
    Asmussen, Katherine ;
    Anderson, Samantha M
    2024-10-01 | PDF
    E-commerce services and facilities have the benefits of bringing new employment opportunities to communities and meeting consumer needs, but they also attract heavy traffic, which results in congestion and negative environmental and economic repercussions. This project offers a new lens for studying future e-commerce facility siting, considering cu ...
  • A Field Evaluation of the Perpetual Pavement Concept
    A Field Evaluation of the Perpetual Pavement Concept
    Khoury, Issam ;
    Chou, Eddie
    2024-10-01 | PDF
    This report details the evaluation of a field study of the perpetual pavement concept. Seven test sections were instrumented on WAY 83 each with a specific build up to allow for a comprehensive examination of the effect of adding High Polymer to an asphalt mix. Sensors were installed in the test sections, including strain gages, temperature sensors ...
  • Usefulness and Reliability of Probe Data When Alerting Work Zone Message Signs Summary
    Usefulness and Reliability of Probe Data When Alerting Work Zone Message Signs [Summary]
    Day, Christopher M. ;
    Knickerbocker, Skylar
    2024-10-01 | PDF
    This study investigated the viability of using crowdsourced data sets, specifically segment speed data (SSD) and connected vehicle data (CVD), for providing real-time traffic information to the public. After a literature review and interviews with state department of transportation personnel were conducted, the study focused on work zone queue warn ...
  • Usefulness and Reliability of Probe Data When Alerting Work Zone Message Signs
    Usefulness and Reliability of Probe Data When Alerting Work Zone Message Signs
    Day, Christopher M. ;
    Okaidjah, Dorcas
    2024-10-01 | PDF
    This study investigated the viability of using crowdsourced data sets, specifically segment speed data (SSD) and connected vehicle data (CVD), for providing real-time traffic information to the public. After a literature review and interviews with state department of transportation personnel were conducted, the study focused on work zone queue warn ...
  • Micromobility Analytics in Florida Usage Patterns Public Transit Synergies and Crash Insights
    Micromobility Analytics in Florida: Usage Patterns, Public Transit Synergies, and Crash Insights
    Peng, Zhong-Ren ;
    Lu, Kaifa
    2024-10-01 | PDF
    Micromobility has become increasingly popular in cities across Florida and the nation, offering a convenient, flexible, and accessible alternative for short-distance travel, particularly for first- and last-mile transportation. However, most areas of Florida and even the nation currently lack a framework and established practices for micromobility ...
  • Evaluation of Kentuckys Driver Focus Camera System
    Evaluation of Kentucky’s Driver Focus Camera System
    Leddy, David ;
    Beaven, Brian
    2024-10-01 | PDF
    Commercial motor vehicle (CMV) drivers who engage in federally prohibited activities such as not wearing safety belts, using hand-held mobile phones, or texting while driving endanger themselves and imperil the well-being of everyone who occupies the surrounding roadway environment. Unfortunately, conventional CMV inspection routines fail to detect ...
  • PostFire Damage Inspection of Concrete Structures Phase III InSitu Experimental Phase
    Post-Fire Damage Inspection of Concrete Structures Phase III – In-Situ Experimental Phase
    Toscano, Tom ;
    Gerasimidis, Simos
    2024-10-01 | PDF
    Cementitious fireproofing has become an essential technique for safeguarding tunnel infrastructure against fire-induced damage, principally by providing a thermal barrier between flexural members and a fire event. Although fireproofing is extensively employed across different sectors, its specific utilization and efficacy in tunnel scenarios is ina ...
  • Second Order Effects on the Design of Slender Reinforced Concrete Bridge Columns
    Second Order Effects on the Design of Slender Reinforced Concrete Bridge Columns
    Denavit, Mark D ;
    Esmaeelpour, Javad
    2024-10-01 | PDF
    The AASHTO LRFD Bridge Design Specifications (AASHTO, 2017), hereafter referred to as AASHTO LRFD, includes an approximate method for the design of slender RC bridge columns. This approximate method, the method most commonly used by bridge engineers, was adapted from building design codes such as the ACI Building Code Requirements for Structural Co ...
  • Development of an UltraHighPerformance Concrete HPile and Its Connections for Alabama Bridge Foundations
    Development of an Ultra-High-Performance Concrete H-Pile and It’s Connections for Alabama Bridge Foundations
    Aaleti, Sriram ;
    Willis, Gabrielle
    2024-10-01 | PDF
    The research scope of this proposal focuses on the development and testing of an innovative Ultra-High Performance Concrete (UHPC) H-pile system for use in bridge foundations in Alabama. The main goal is to design a cost-effective, durable H-shaped prestressed pile that matches the physical dimensions and weight characteristics of traditional steel ...
  • 07167 Evaluate Performance of Sealers and Coatings Applied to TxDOT Bridge Substructures
    0-7167: Evaluate Performance of Sealers and Coatings Applied to TxDOT Bridge Substructures
    Mukhopadhyay, Anol ;
    Mistri, Abhijit
    2024-10-01 | PDF
    Sealers and coatings protect concrete bridge substructure elements from chloride-induced corrosion and extend the useful life of existing bridges. Their application is a common practice by the Texas Department of Transportation (TxDOT). Although concrete-penetrating surface treatments, Type X waterproofing, silicone resin paint, or opaque sealers a ...
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