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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 2801 - 2820 of 35959 results
  • Connected Autonomous Vehicles Frequently Asked Questions
    Connected Autonomous Vehicles: Frequently Asked Questions
    Marti, Michael M ;
    Bitzan, Nicole
    2022-04-01 | PDF
    An interactive presentation describing frequently asked questions about Connected and Autonomous Vehicles (CAV). The presentation is divided into five sections: General, Timing/Preparation, Policy/Standardization, Safety, Rural, and Resources.
  • Quantifying Effectiveness and Impacts of Digital Message Signs on Traffic Flow
    Quantifying Effectiveness and Impacts of Digital Message Signs on Traffic Flow
    Kwigizile, Valerian ;
    Oh, Jun-Seok
    2022-03-31 | PDF
    Digital message signs (DMS) are a vital part of the advanced traveler information systems (ATIS) that disseminate various real-time travel information to the road users, including traffic diversion, travel time, congestion, upcoming roadwork, lane closures, and incidents such as accidents. Other information includes inclement weather, speed regulat ...
  • Native Seed Germplasm Study and Development Project
    Native Seed Germplasm Study and Development Project
    Gisler, Melanie ;
    Harris, Scott
    2022-03-31 | PDF
    This four-year study was designed to address the question “can we improve upon standard seed mixes (commercial seed sources used by NMDOT) by including local sources or alternate sources from less frequently used commercially available species or entirely novel species?” Five 1-acre research sites on DOT and private land near the Lordsburg Playa we ...
  • Leveraging UAV Capabilities for Vehicle Tracking and Collision Risk Assessment at Road Intersections
    Leveraging UAV Capabilities for Vehicle Tracking and Collision Risk Assessment at Road Intersections
    Zong, Shuya ;
    Chen, Sikai
    2022-03-29 | PDF
    Transportation agencies continue to pursue crash reduction. Initiatives include the design of safer facilities, promotion of safe behaviors, and assessments of collision risk as a precursor to the identification of proactive countermeasures. Collision risk assessment includes reliable prediction of vehicle trajectories. Unfortunately, in using trad ...
  • Hot Mix Asphalt Research Investigation for Connecticut Final Report
    Hot Mix Asphalt Research Investigation for Connecticut - Final Report
    Zinke, Scott ;
    Mahoney, James
    2022-03-22 | PDF
    Six topics were investigated involving specifications, performance and testing of hot mix asphalt in Connecticut. An investigation into the possible reduction in the number of mix design levels used in CT resulted in a recommendation to eliminate Level 4. An investigation into minimum asphalt contents in CT mixes was halted and commenced under a di ...
  • Infrastructure Protection and Rehabilitation Response to High Lake Levels
    Infrastructure Protection and Rehabilitation Response to High Lake Levels
    Hebebrand, Craig K ;
    Peters, Christopher S
    2022-03-17 | PDF
    This multifaceted planning study addresses risks to MDOT assets associated with high water levels in the Great Lakes, as experienced in 2019 and 2020. The project classifies exposure, vulnerability, and risk for flooding and erosion hazards statewide, focusing on areas hydrologically connected to the Great Lakes. For five priority sites, a conditio ...
  • UAV Selection Methodology and Performance Evaluation to Support UAVEnabled Bridge Inspection
    UAV Selection Methodology and Performance Evaluation to Support UAV-Enabled Bridge Inspection
    Karimoddini, Ali ;
    Cavalline, Tara L
    2022-03-15 | PDF
    This project performed preliminary work to support use of Unmanned Aerial Vehicles (UAV)-based for bridge inspections, providing an economical and safer alternative to conventional inspection practices. The main challenge is that most existing technologies rely on general-purpose UAV platforms and there is no verified methodology for UAV-enabled br ...
  • Integration of Unmanned Aerial Systems Data Collection Into DaytoDay Usage for Transportation Infrastructure A Phase III Project
    Integration of Unmanned Aerial Systems Data Collection Into Day-to-Day Usage for Transportation Infrastructure – A Phase III Project
    Brooks, Colin ;
    Cook, C
    2022-03-11 | PDF
    The capabilities of unmanned / uncrewed aerial system (UAS) continue to advance, with a wide variety of applications useful for the condition assessment and monitoring of transportation infrastructure. This Phase 3 project focused on four UAS uses cases and how to integrate their results into MDOT databases and workflows. The four use cases were fo ...
  • Evaluation of Four Bridge Rail Systems for Compliance With the 2016 Edition of Manual for Assessing Safety Hardware MASH
    Evaluation of Four Bridge Rail Systems for Compliance With the 2016 Edition of Manual for Assessing Safety Hardware (MASH)
    Fang, Howie ;
    Li, Zheng
    2022-03-09 | PDF
    In this project, the NC Two-bar Metal Rail (2BMR) was evaluated for compliance with the 2016 edition of Manual for Assessing Safety Hardware (MASH) under Test Level 3 (TL-3) conditions. Two full-scale crash tests, MASH Tests 3-10 and 3-11, were performed on a 90-ft section of the 2BMR and successfully passed all MASH evaluation criteria. A finite e ...
  • Evaluating New Technologies for Roads Program Initiatives in Safety and Efficiency ENTERPRISE Phase II
    Evaluating New Technologies for Roads Program Initiatives in Safety and Efficiency (ENTERPRISE) Phase II
    Deeter, Dean ;
    Preisen, Linda
    2022-03-08 | PDF
    Over the past thirty years, the ENTERPRISE Pooled Fund has completed research projects with one common theme – that they address specific problems to help advance the transportation technology programs in the member agencies. This final report describes the activities of ENTERPRISE Phase II technical activities, performed between 2018 and 2022. Col ...
  • Implementing and Testing a Real Time Network Positioning System for Connecticut Department of Transportation Advanced Continuously Operating Reference Network ACORN
    Implementing and Testing a Real Time Network Positioning System for Connecticut Department of Transportation: Advanced Continuously Operating Reference Network (ACORN)
    Myer, Thomas ;
    Tellier, Ronald
    2022-03-02 | PDF
    The Connecticut Department of Transportation (CTDOT) has evolved its Continuously Operating Reference Stations (CORS) from only serving static data to also serving streaming real-time messages that allow roving global navigation satellite system (GNSS) receivers (such as the U.S. NAVSTAR Global Positioning System [GPS]) to determine centimeter-accu ...
  • WisDOT Data InventoryCatalog
    WisDOT Data Inventory/Catalog
    Graettinger, Andrew ;
    Li, Yang
    2022-03-01 | PDF
    As WisDOT evolves to a data-driven decision-making organization, centralized and consistent information about datasets throughout the entire enterprise becomes increasingly important. The WisDOT Data Inventory\Catalog research project completed by the Institute for Physical Infrastructure and Transportation (IPIT) at the University of Wisconsin-Mil ...
  • Slope Repair and Maintenance Management System Final Report
    Slope Repair and Maintenance Management System: Final Report
    Shahandashti, Mohsen ;
    Hossain, Sahadat
    2022-03-01 | PDF
    Recurring slope failures are common in Texas due to the extreme weather and soil conditions. TxDOT spends millions of dollars annually to repair embankment slope failures along state roads and highways. The proactive maintenance of highway embankments and cut slopes can significantly reduce the cost of emergency stabilization and improve highway op ...
  • Improving Light and Soundscapes for Wildlife Use of Highway Crossing Structures
    Improving Light and Soundscapes for Wildlife Use of Highway Crossing Structures
    Shilling, Fraser ;
    Waetjen, David
    2022-03-01 | PDF
    Transportation and other agencies and organizations are increasingly planning and building under- and over-crossing structures for wildlife to traverse busy highways. However, if wildlife do not use these structures due to noise, light, and other factors, then the structures may have a low benefit to cost ratio. Several criteria are key for their s ...
  • Impact of Advanced Driver Assistance Systems ADAS on Road Safety and Implications for Education Licensing Registration and Enforcement
    Impact of Advanced Driver Assistance Systems (ADAS) on Road Safety and Implications for Education, Licensing, Registration, and Enforcement
    Pradhan, Anuj K. ;
    Hungund, Apoorva
    2022-03-01 | PDF
    Advanced Driver Assistance Systems (ADAS) are rapidly being developed and deployed, with an increasing number of new passenger vehicles equipped with advanced ADAS. These systems promise to improve safety by assisting drivers. However, there exists a critical gap in our understanding of the potential impacts associated with driver over-reliance and ...
  • Implementation of Porous Concrete in Sidewalks in New Jersey Final Report
    Implementation of Porous Concrete in Sidewalks in New Jersey [Final Report]
    Najm, Husam ;
    Wang, Hao
    2022-03-01 | PDF
    Pervious (or porous) concrete has been gaining popularity as a potential solution to reduce the amount of impermeable surfaces associated with sidewalks, reduce puddling, and potentially slow storm water surface runoff. As important as these benefits are to surface runoff mitigation, there are concerns with the ability of pervious concrete to provi ...
  • Examining the Effects of a Bike and Ebike Lending Program on Commuting Behavior
    Examining the Effects of a Bike and E-bike Lending Program on Commuting Behavior
    Fitch, Dillon T. ;
    Gao, Zeyu
    2022-03-01 | PDF
    In 2015, Google added a new transportation demand management (TDM) program to increase bike commuting to their two main campuses in Mountain View and Sunnyvale, California. An initial survey of employees indicated that bike ownership and worry about maintenance were primary bicycling barriers. With this information, Google began a program that loan ...
  • Enhancing Crash Data Reporting to Highway Safety Partners in Wyoming by Utilizing Big Data Analysis and Survey Techniques
    Enhancing Crash Data Reporting to Highway Safety Partners in Wyoming by Utilizing Big Data Analysis and Survey Techniques
    Farid, Ahmed ;
    Nazneen, Sahima
    2022-03-01 | PDF
    Road safety is a crucial topic of transportation engineering. The Wyoming Department of Transportation (WYDOT) collects such data from police crash reports and roadway inventories. WYDOT also provides those data to its partner groups in the form of data records or summary statistics documented in periodical reports. The groups include the Wyoming S ...
  • Active Transportation Facilities in Canal Corridors
    Active Transportation Facilities in Canal Corridors
    Crump, Matthew ;
    Singleton, Patrick A.
    2022-03-01 | PDF
    The state of Utah has shown an increasing need for active transportation infrastructure, especially in the rapidly developing areas across the Wasatch Front. Canal corridors offer ideal locations for siting shared-use paths because they are linear, flat, and have an interlaced presence within communities. The purpose of this study is to summarize t ...
  • Connecting Work Zones in Western New York RealTime RealPresence Work Zone Status for Efficient and Safe Driving
    Connecting Work Zones in Western New York: Real-Time, Real-Presence Work Zone Status for Efficient and Safe Driving
    Sheckler, Ross D.
    2022-03-01 | PDF
    The goal of the project is to demonstrate underutilized connected work zone technologies across critical routes in New York State’s Niagara region. iCone Products, LLC (IPL) provides electronically marked roadwork activities that can be integrated with other traffic management and individual vehicle navigation systems. This data can provide a regio ...
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