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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 841 - 860 of 36104 results
  • MD 210 Before and After Case Study for Speed Management Practices
    MD 210 Before and After Case Study for Speed Management Practices
    Franz, Mark L. ;
    Zahedian, Sara
    2024-11-01 | PDF
    MD 210 is known as one of the most dangerous roads in the state of Maryland. While MDOT SHA is aware that speeding is contributing factor in most crashes on MD 210, conventional efforts to reduce speeding, such as signing and automated speed enforcement have not been successful. In addition to speeding, driving behaviors such as harsh braking, hars ...
  • Project Summary CostBenefit Analysis of FuelEfficient Speed Control using SPaT Data
    Project Summary: Cost/Benefit Analysis of Fuel-Efficient Speed Control using SPaT Data
    Minnesota. Department of Transportation
    2024-11-01 | PDF
    MnDOT’s Connected Corridor project in 2020 contributed to progress in the development and deployment of technology for vehicle-to-infrastructure communications. Using signal phasing and timing (SPaT) data from signalized intersections to control driving speed, this project completed a cost benefit analysis for use of SPaT data in connected vehicles ...
  • Project Summary RealTime Integration of Arrow Board Messages into Traveler Information Systems
    Project Summary: Real-Time Integration of Arrow Board Messages into Traveler Information Systems
    Minnesota. Department of Transportation  ...
    2024-11-01 | PDF
    Many DOTs struggle with real-time information being relayed to their users in situations that involve lane closures. Due to the variability in location and duration, real-time integration of arrow board messages into traveler information systems became an item of interest for MnDOT to provide up-to-date data to travelers.
  • Project Summary Connected Corridor
    Project Summary: Connected Corridor
    Minnesota Department of Transportation  ...
    2024-11-01 | PDF
    The Connected Corridor was a foundational Connected Vehicle (CV) project along TH-55 that included planning, design, deployment, and operation of CV technologies to create a better understanding of what is required for planning and preparing for emerging transportation technologies. This initiative showcased technologies to improve the safety and e ...
  • NHTSA TireRelated Surveys Results and Implications
    NHTSA Tire-Related Surveys: Results and Implications
    Kindelberger, John C
    2024-11-01 | National Transportation Statistics (NTS) | PDF
    Low tire pressure has been shown to be an issue of safety and of fuel economy. Federal Motor Vehicle Safety Standard No. 138 required a tire pressure monitoring system (TPMS) in most passenger vehicles with a gross vehicle weight rating under 10,000 lb as of September 2008 with a phase-in starting in September 2006. NHTSA conducted an evaluation su ...
  • MASH Testing of Luminaire Pole behind Single Slope Traffic Rail
    MASH Testing of Luminaire Pole behind Single Slope Traffic Rail
    Bligh, Roger P. ;
    Bastin, Brianna
    2024-11-01 | PDF
    The purpose of the test reported herein was to assess the performance of a luminaire pole mounted behind a single slope traffic rail according to the safety-performance evaluation guidelines included in the second edition of the American Association of State Highway and Transportation Officials Manual for Assessing Safety Hardware (MASH) (1). The c ...
  • Factors Influencing Pedestrian Decisions to Cross MidBlock and Potential Countermeasures
    Factors Influencing Pedestrian Decisions to Cross Mid-Block and Potential Countermeasures
    Xie, Kun ;
    Yang, Hong
    2024-11-01 | PDF
    About 70% of pedestrian fatalities involve mid-block crossings in Virginia. To address this critical safety issue, this research aims to investigate factors influencing pedestrian decisions to cross at mid-block locations and identify potential countermeasures to enhance pedestrian safety. The research team employed a multifaceted approach. A compr ...
  • Development of a MASH TL4 Portable Concrete Barrier with Large Scupper
    Development of a MASH TL-4 Portable Concrete Barrier with Large Scupper
    Bligh, Roger P. ;
    Silvestri-Dobrovolny, Chiara
    2024-11-01 | PDF
    Portable concrete barriers are commonly used as temporary positive protection in work zone applications to shield motorists from hazards in the work zone and protect workers from errant vehicles. They are also used in permanent applications as a median barrier to mitigate serious cross-median crashes by preventing penetration of errant vehicles int ...
  • 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 ...
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