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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 2301 - 2320 of 35888 results
  • Best Practices for Highway Project Scoping
    Best Practices for Highway Project Scoping
    Jasper, Jeff ;
    Wright, Samantha
    2022-11-01 | PDF
    One of the Kentucky Transportation Cabinet’s (KYTC) foremost priorities in fulfilling its mission is to deliver successful projects — quality solutions that meet the defined scope and are delivered on time and within the budget specified in the Highway Plan. When a project scope is not clearly defined or uncertain, revisions may take place after th ...
  • Estimating Corrosion of Embedded Steel Rebars in Bridge Structures Technical Summary
    Estimating Corrosion of Embedded Steel Rebars in Bridge Structures [Technical Summary]
    Pilarski, Paul ;
    Shafei, Behrouz
    2022-11-01 | PDF
    The goal of this project was to develop guidance and aids to enhance visual and other nondestructive methods of estimating reinforcement section loss. The guidance and aids would be developed specifically for standardized 2-inch concrete cover over reinforcement with 4,000 psi strength concrete.
  • Division of Planning Research OnCall Task 10 Deer Passage Through Rock Channel Protection RCP Designs and Options
    Division of Planning Research On-Call Task #10 - Deer Passage Through Rock Channel Protection (RCP) Designs and Options
    Sperry, Benjamin R. ;
    Bhattarai, Shristi
    2022-11-01 | PDF
    One safety-related issue that has been identified by ODOT is deer crashes. ODOT OES is proposing to install a "deer passage" within the rock channel protection (RCP) underneath highway bridges that would allow for the deer to pass under the highway instead of going across on the surface. The purpose of this research was to analyze the feasibility o ...
  • DesignBuild Pilot Program Evaluation
    Design-Build Pilot Program Evaluation
    Qin, Xiao ;
    Gottlieb, Mark
    2022-11-01 | PDF
    The purpose of this project was to evaluate the Wisconsin Department of Transportation (WisDOT) pilot program for design-build project delivery. Under legislation adopted in 2019, WisDOT was authorized to award up to six highway or bridge projects under one of three delivery methods: low-bid design build, best-value design build, or fixed-price des ...
  • Development of Training Modules to Increase Usage and Understanding of AgencyWide Software Programs
    Development of Training Modules to Increase Usage and Understanding of Agency-Wide Software Programs
    Durham, Stephan A. ;
    Geum Chorzepa, Mi
    2022-11-01 | PDF
    The Georgia Department of Transportation (GDOT) e-construction initiatives utilize key software programs—ProjectWise, Bluebeam, and CATS—that currently lack adequate on-demand training. This study aims to develop innovative and engaging e-construction training programs to increase usage and understanding of ProjectWise, Bluebeam, and CATS across th ...
  • Implementing the LWD for MoDOT Construction Acceptance of Unbound Material Layers
    Implementing the LWD for MoDOT Construction Acceptance of Unbound Material Layers
    Zhang, Xiong ;
    Liu. Jenny
    2022-11-01 | PDF
    Conventional density-based methods of compaction quality assurance (QA) using nuclear density gauges (NDG) have been the practice for many years. However, NDG testing becomes less desirable because of safety, regulatory, and cost concerns. In addition, density is not a direct input to the structural design of the pavements and is not directly linke ...
  • Missouri Systemic Countermeasures to Improve Pedestrian Safety
    Missouri Systemic Countermeasures to Improve Pedestrian Safety
    Priscilla, Tobias ;
    Timothy, Szwedo
    2022-11-01 | PDF
    Missouri Department of Transportation (MoDOT) has successfully implemented systemic safety countermeasures in the past to reduce fatal and serious injury crashes related to roadway departure. MoDOT initiated this research project to address the increasing trend in pedestrian fatalities and serious injuries in Missouri. The focus of the project is t ...
  • Improving Pollinator Habitat through CostEffective Roadside Revegetation Technical Summary
    Improving Pollinator Habitat through Cost-Effective Roadside Revegetation [Technical Summary]
    MacSwain, Dan ;
    Snell-Rood, Emilie
    2022-11-01 | PDF
    The goal of this research was to identify cost-effective roadside revegetation methods and locations to benefit pollinators, including bumble bees and butterflies.
  • LongTerm Project and NetworkLevel NDT Implementation Plan for Indiana
    Long-Term Project and Network-Level NDT Implementation Plan for Indiana
    Jia, Yunhui ;
    Williams, Christopher S
    2022-11-01 | PDF
    Bridge deck condition assessments in Indiana are primarily reliant on visual inspection. The condition of bridge decks, however, is highly dependent on deterioration under the surface, which includes the corrosion of steel reinforcement and concrete delamination. The implementation of reliable nondestructive testing (NDT) methods can provide inform ...
  • Identify Sources and Risks on Cybersecurity for Connected Vehicle Infrastructures
    Identify Sources and Risks on Cybersecurity for Connected Vehicle Infrastructures
    Lin, Pei Sung ;
    Kourtellis, Achilleas
    2022-11-01 | PDF
    The transportation industry continues to adopt new technologies, and transportation systems are becoming increasingly connected. One of the latest innovations is the development and deployment of Connected Vehicles (CVs). CVs are vehicles equipped with a broad range of technologies that enable them to communicate with external devices such as other ...
  • Guidance for and Effectiveness of LowCost Delineation Treatments
    Guidance for and Effectiveness of Low-Cost Delineation Treatments
    Flintsch, Alejandra Medina ;
    Gibbons, Ronald
    2022-11-01 | PDF
    Roadway departure crashes (RDCs) occur when a vehicle crosses a centerline, edgeline, or otherwise leaves the intended path of travel. The Virginia Department of Transportation (VDOT) has devoted significant efforts to reducing RDCs. As part of the effort to consider countermeasures, the current project identified best practices in low-cost delinea ...
  • NJ Transit Grade Crossing Safety Technical Brief
    NJ Transit Grade Crossing Safety [Technical Brief]
    Liu, Xiang ;
    Jalayer, Mohammad
    2022-11-01 | PDF
    The objective of this research was to narrow the NJT provided list of 100 grade crossings to 20 through a developed selection method that can be utilized on a larger inventory in the future. This methodology was used to prioritize the provided grade crossings for closure by formulating a ranking model with selection criteria and evaluation factors, ...
  • Understanding Transportation Programs and Services at California Community Colleges
    Understanding Transportation Programs and Services at California Community Colleges
    Brozen, Madeline ;
    Hussain, Rasik
    2022-11-01 | PDF
    High transportation costs and access barriers can make it difficult for community college students to manage employment, household responsibilities, and education, negatively affecting their academic success. Understanding the state of existing transportation services and programs at California community colleges is a first step to addressing these ...
  • Implementation of Data Quality Assurance QA for Innovative Technologies at MoDOT
    Implementation of Data Quality Assurance (QA) for Innovative Technologies at MoDOT
    Chang, George ;
    Gilliland, Amanda
    2022-11-01 | PDF
    Intelligent construction technologies (ICTs) combine modern science and innovative construction technologies. The goal of ICT is to improve the quality of construction, save costs, and improve safety. The ICTs described in this report include intelligent compaction (IC), paver-mounted thermal profiler (PMTP) equipment, and dielectric profiling syst ...
  • Beneficial Uses of Dredged Material from the Illinois Marine Transportation System
    Beneficial Uses of Dredged Material from the Illinois Marine Transportation System
    Stark, Timothy D. ;
    Idries, Abedalqader
    2022-11-01 | PDF
    This project presents several successful case studies in 15 categories of dredged material along with the statutory and regulatory requirements for beneficial use of dredged material in Illinois. The Illinois Environmental Protection Agency classification criteria for contaminated and uncontaminated dredged material are included with emphasis on Il ...
  • Impact on Construction Loads on Steel Diaphragm Bridge Design
    Impact on Construction Loads on Steel Diaphragm Bridge Design
    Stewart, Lauren K ;
    Kahn, Lawrence
    2022-11-01 | PDF
    Bridges are critical structures, serving an important function that is vital to the safe and economical conveyance of people and goods throughout Georgia. They are designed with specifications to carry loads including their self-weight and a design vehicle load, among others, when they are in service. Satisfying all design specifications is crucial ...
  • Detecting Traffic Data Anomalies in Longitudinal Signal Performance Measures
    Detecting Traffic Data Anomalies in Longitudinal Signal Performance Measures
    Schultz, Grant G. ;
    Macfarlane, Gregory S
    2022-11-01 | PDF
    The Utah Department of Transportation (UDOT) has continuously invested in traffic signal performance evaluation in Utah. The Brigham Young University (BYU) transportation research team developed a high-level scoring system to evaluate signal performance using four Automated Traffic Signal Performance Measures (ATSPM), including platoon ratio, split ...
  • Enhancing AV Traffic Safety through Pedestrian Detection Classification and Communication
    Enhancing AV Traffic Safety through Pedestrian Detection, Classification and Communication
    Chase, R. Thomas ;
    Feng, Jingyu
    2022-11-01 | PDF
    Safety for all road users is a key concern as Connected and Autonomous Vehicle technologies develop and reach the testing phase. One key concern is the change to two-way communication that often occurs in traditional pedestrian-vehicle interaction. This project focused on three key aspects to this issue. First, a prototype autonomous shuttle system ...
  • NonMotorist Fatalities A Deep Dive
    Non-Motorist Fatalities: A Deep Dive
    Burbidge, Shaunna K. ;
    Azra, Nuzhat
    2022-11-01 | PDF
    Non-motorist fatalities pose a serious concern to traffic safety initiatives within the state of Utah. Past research has examined the characteristics associated with fatal pedestrian crashes in depth, however, considerably less study has been done to understand the contextual factors surrounding these incidents. Pedestrian crashes may be influenced ...
  • Landslide Monitoring Methods Application of Existing Technologies to LongTermand Realtime Monitoring of Slope Movements
    Landslide Monitoring Methods: Application of Existing Technologies to Long-Termand Real-time Monitoring of Slope Movements
    Mines, Aine E ;
    Beckstrand, Darren L.
    2022-11-01 | PDF
    Various landslide monitoring techniques were applied concurrently to a known cut-slope landslide and a previously unknown fill slope failure, both on the Ozark Mountain Highroad (Missouri Route 76) near Branson, Missouri. Both subsurface and drone-based monitoring techniques were employed so that the strengths and weaknesses of the various monitori ...
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