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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 901 - 920 of 36104 results
  • Patterns of Domestic AnimalVehicle Collisions on Tribal Lands in Montana US
    Patterns of Domestic Animal-Vehicle Collisions on Tribal Lands in Montana, U.S.
    Bell, Matthew ;
    Huijser, Marcel P.
    2024-09-30 | PDF
    Animal-vehicle collisions (AVCs) are a significant concern for motorist safety and pose a risk to both wildlife and domestic animals. This report analyzes spatial patterns of wildlife-vehicle collisions (WVCs) and domestic animal-vehicle collisions (DAVCs) on Montana’s tribal lands to identify high-risk areas and inform mitigation strategies. Data ...
  • Identification and Prioritization of Road Sections with a Relatively High Concentration of Large Wild MammalVehicle Collisions in Gallatin County Montana USA
    Identification and Prioritization of Road Sections with a Relatively High Concentration of Large Wild Mammal-Vehicle Collisions in Gallatin County, Montana, USA
    Huijser, Marcel P. ;
    Bell, Matthew A
    2024-09-30 | PDF
    The primary objective of this project is to identify and prioritize the road sections in Gallatin County that have a relatively high concentration of collisions involving large wild mammals. These road sections may then later be evaluated for potential future mitigation measures aimed at 1. Reducing collisions with large wild mammals, and 2. Provid ...
  • Engaging Community Partners and Youth To Enhance and Sustain Safe Routes to Schools
    Engaging Community Partners and Youth To Enhance and Sustain Safe Routes to Schools
    MacFarlane, Jennifer ;
    Kack, David
    2024-09-30 | PDF
    Safe Routes to School programs increase the number of children who walk and bike to school. By building pedestrian skills at a young age, students are more likely to choose active transportation modes across their lifespan, therefore decreasing vehicle miles traveled, reducing vehicle emissions, preventing chronic disease, and improving physical he ...
  • Evaluating Electrical Resistivity as a Procedure to Aid in Characterizing Subsurface Conditions
    Evaluating Electrical Resistivity as a Procedure to Aid in Characterizing Subsurface Conditions
    Barger, Michelle ;
    Immel, Grace
    2024-09-30 | PDF
    The Iowa DOT Soils Design section participated in the Demonstration Stage of the Advanced Geotechnical Exploration Methods (A-GaME) initiative. The A-GaME initiative sought to promote the use of advanced geotechnical methods as a means to reduce cost in subsurface investigation. One of the proven geophysical methods promoted is known as Electrical ...
  • HighMast Tower Foundation Phase II
    High-Mast Tower Foundation – Phase II
    Al Maabreh, Ammar ;
    Awawdeh, Abdelrahman
    2024-09-30 | PDF
    Challenge: High-mast luminaire supports used in the US transportation sector are typically steel poles that are attached to a baseplate via a butt or socket weld. Many have failed primarily due to fatigue cracking at the weld toe. Significant research in the US improved the fatigue performance of these structures; however, failures still occur due ...
  • Setting up ROaDS Partners with Customized Surveys Final Report
    Setting up ROaDS Partners with Customized Surveys: Final Report
    Bell, Matthew ;
    Kack, David
    2024-09-30 | PDF
    The Roadkill Observation and Data System (ROaDS) project, developed through a partnership between the U.S. Fish and Wildlife Service, National Park Service, and the Western Transportation Institute at Montana State University, provides a user-friendly data collection system to monitor wildlife-vehicle collisions (WVCs) and identify safe crossing lo ...
  • Use of Geothermal Energy for DeIcing Approach Pavement Slabs and Bridge Decks Phase II Project Summary Report
    Use of Geothermal Energy for De-Icing Approach Pavement Slabs and Bridge Decks – Phase II [Project Summary Report]
    Yu, Xinbao ;
    Puppala, Anand J.
    2024-09-30 | PDF
    The research team developed and optimized a geothermal bridge deck deicing system that can be installed onto in-service bridges through retrofitting. To meet the installation and bridge inspection challenges, the research team tested various bridge heating loop designs considering heating fluids (water-based vs. CO2), insulation materials (spray-on ...
  • Regional Sediment Bulking Methods for California in Support of Post Wildfire Flood Mitigation
    Regional Sediment Bulking Methods for California in Support of Post Wildfire Flood Mitigation
    Kondolf, G Mathias ;
    Radke, John
    2024-09-20 | PDF
    The California Department of Transportation (Caltrans) is currently searching for a methodology to determine sediment bulking specific to Northern California. In Southern California, there are specific, existing methods and equations in use by Caltrans. Due to increased wildfire occurrence and severity in northern and southern California, a regiona ...
  • Convex Reformulation of Information Constrained Linear State Estimation with MixedBinary Variables for Outlier Accommodation
    Convex Reformulation of Information Constrained Linear State Estimation with Mixed-Binary Variables for Outlier Accommodation
    Hu, Wang ;
    Jiang, Zeyi
    2024-09-13 | PDF
    This article considers the challenge of accommodating outlier measurements in state estimation. The Risk-Averse Performance-Specified (RAPS) state estimation approach addresses outliers as a measurement selection Bayesian risk minimization problem subject to an information accuracy constraint, which is a non-convex optimization problem. Prior explo ...
  • Internal Curing with Fine Light Weight Aggregates FLWA Created from Unsuitable Coal Combustion Ash CCA
    Internal Curing with Fine Light Weight Aggregates (FLWA) Created from Unsuitable Coal Combustion Ash (CCA)
    Alqenai, Yousif M. ;
    Tejuoso, Bankole
    2024-09-12 | PDF
    This work studies the potential use of fine lightweight aggregates (FLWA) created from ‘as received’ landfill condition coal combustion ash (CCA), referred to as CCA-FLWA, for concrete internal curing applications. The innovative CCA-FLWA is manufactured using high-temperature sintering like available industrial kilns. To manufacture CCA-FLWA with ...
  • Reduce Fatal Serious Injury Crashes
    Reduce Fatal & Serious Injury Crashes
    Kurkcu, Abdullah ;
    Deutsch, Paul
    2024-09-04 | PDF
    There is an urgency to initiate innovative approaches to transportation safety to reduce traffic fatalities and serious injuries in South Dakota. Therefore, the South Dakota Department of Transportation is exploring the implementation of a zero-fatality transportation safety initiative. A literature review of national strategies and relevant polici ...
    Supporting Files
  • Utilizing a ParticlePacking Approach for an IllinoisSpecific Nonproprietary LowShrinkage UHPC
    Utilizing a Particle-Packing Approach for an Illinois-Specific, Nonproprietary, Low-Shrinkage UHPC
    Baten, Bayezid ;
    Gombeda, Matthew J
    2024-09-01 | PDF
    Ultra-high-performance concrete (UHPC) represents the next generation of concrete, with a strength 3-4 times greater than traditional concrete (100-120 MPa as opposed to 30-40 MPa). However, most of the commercial UHPC mixes are proprietary and expensive. In this project, we document the development of nonproprietary, cost-effective UHPC mixes prim ...
  • Evaluating the Robustness of MDSS Forecast and Compliance with Recommendations
    Evaluating the Robustness of MDSS Forecast and Compliance with Recommendations
    Brinster, Gregory L ;
    Desai, Jairaj
    2024-09-01 | PDF
    The Indiana Department of Transportation (INDOT) adopted the Maintenance Decision Support System (MDSS) for user-defined plowing segments in the winter of 2008–2009. Since then, many new data sources, including connected vehicle data, enhanced weather data, and fleet telematics have been integrated into INDOT winter operations activities. The objec ...
  • Verification of ODOT Rock Channel Design Procedures Fact Sheet
    Verification of ODOT Rock Channel Design Procedures [Fact Sheet]
    Che, Daniel ;
    Bricker, Jeremy
    2024-09-01 | PDF
    The Ohio Department of Transportation (ODOT) employs rock channel protection (RCP), also known as riprap, to manage energy dissipation and prevent scouring at culvert and storm drain outlets. The design for RCP at outlets follows guidelines outlined in Figure 1002-4 of ODOT's Location and Design Manual Volume 2, incorporating specifications from OD ...
  • Robust DecisionMaking Framework for Sustainable Operations and Planning of MBTA Rapid Transit Vehicles
    Robust Decision-Making Framework for Sustainable Operations and Planning of MBTA Rapid Transit Vehicles
    Han, Zhuo ;
    Christofa, Eleni
    2024-09-01 | PDF
    Urban Rail Transit (URT) systems play a critical role in modern cities but consume significant amounts of energy. Understanding and predicting energy consumption patterns in these systems is vital for sustainable urban planning, especially during disruptive events. This study presents a Long Short-Term Memory (LSTM) recurrent neural network, the mo ...
  • Road Weather Management Using Connected Vehicle Technology
    Road Weather Management Using Connected Vehicle Technology
    Perry, Frank ;
    Toth, Chris
    2024-09-01 | PDF
    Road weather systems collect, analyze, and share weather information to help mitigate the disruptive impact of weather events on the nation’s surface transportation system. Much research and development has been undertaken to advance road weather management practice. Meanwhile, many state and local efforts have aimed to deploy connected vehicle (CV ...
  • Comprehensive Pavement Patching Tools and WebBased Software for Pavement Condition Assessment and Visualization
    Comprehensive Pavement Patching Tools and Web-Based Software for Pavement Condition Assessment and Visualization
    Jha, Sneha ;
    Zhang, Yaguang
    2024-09-01 | PDF
    It is a common practice among state agencies to manually inspect road segments and decide maintenance requirements based on the pavement condition index (PCI). However, standalone PCI only evaluates the pavement surface condition. When coupled with the variability in human perception of pavement distress, this limits the accuracy of current pavemen ...
  • Exploring Apex Predator Effects on WildlifeVehicle Collisions A Case Study on Wolf Reintroductions in Yellowstone
    Exploring Apex Predator Effects on Wildlife-Vehicle Collisions: A Case Study on Wolf Reintroductions in Yellowstone
    Bell, Matthew ;
    Huijser, Marcel P.
    2024-09-01 | PDF
    This study investigates the impact of wolf reintroduction on wildlife-vehicle collisions (WVCs) along a segment of US-191 bordering Yellowstone National Park. Wolves were reintroduced in 1995–1996, and subsequent wolf pack establishment may have influenced the behavior and population dynamics of prey species, potentially altering WVC patterns. Usin ...
  • Spot Zone and Overcoat Painting of Steel Bridges
    Spot, Zone and Overcoat Painting of Steel Bridges
    Wells, Danny ;
    Palle, Sudir
    2024-09-01 | PDF
    Over the past 25–30 years, the Kentucky Transportation Cabinet (KYTC) has replaced lead-based coatings on many bridges, often with zinc-based systems. But many of these coating systems are now degrading and reaching the ends of their service lives. Historically, KYTC has relied entirely on remove-and-replace painting, however, given the programmati ...
  • Dowel Concrete Interface Performance Validation in Concrete Rehabilitations
    Dowel – Concrete Interface Performance Validation in Concrete Rehabilitations
    Izevbekhai, Bernard Igbafen ;
    Aydin, Ceren
    2024-09-01 | PDF
    The Minnesota Department of Transportation (MnDOT) investigated the use of dowels with various anchoring methods and their effects on pavement performance. In a previous study, the characteristics of various epoxy and grout anchorage systems at the interface between new construction and existing concrete were studied using cut-out slabs brought int ...
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