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University Transportation Centers

rosaP Repository & Open Science Access Portal

USDOT’s University Transportation Centers (UTC) Program, launched in 1988, awards and administers grants to consortia of colleges and universities across the United States. Each UTC forms a unique center of transportation excellence on a specific research topic. The UTC Collection brings together the research outputs of these consortia. To learn more about the UTC program , visit https://www.transportation.gov/content/university-transportation-centers. Bookmark this collection: https://rosap.ntl.bts.gov/collection_utcp or https://doi.org/10.21949/1530855.

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Showing 861 - 880 of 9369 results
  • State of the Practice of Crash Reporting in the US and Implications for CAV Safety Assessment
    State of the Practice of Crash Reporting in the U.S. and Implications for CAV Safety Assessment
    Acharya, Sailesh ;
    Rahman, Md Ashikur
    2024-05-01 | PDF
    This study evaluated connected and autonomous vehicle (CAV) crash reporting practices across the United States, emphasizing the importance of standardized reporting and legislation for the safe deployment of CAVs on public roads. Through a survey of state transportation officials and a review of current practices and legislation, the study identifi ...
  • State of the Practice of Crash Reporting in the US and Implications for CAV Safety Assessment Research Brief
    State of the Practice of Crash Reporting in the U.S. and Implications for CAV Safety Assessment [Research Brief]
    Mekker, Michelle ;
    Acharya, Sailesh
    2024-05-01 | PDF
    This research focuses on evaluating current CAV crash reporting practices across the United States, identifying inconsistencies and gaps, and proposing recommendations for standardized reporting and legislation to ensure safe and effective deployment of CAVs on public roads. Researchers assessed CAV crash reporting practices across the United State ...
  • Determination of Position and Operations Analysis of Emergency Freight Parking in Florida State
    Determination of Position and Operations Analysis of Emergency Freight Parking in Florida State
    Kaisar, Evangelos I. ;
    Akcali, Elif
    2024-05-01 | PDF
    The transportation system is particularly vulnerable to disruptive events, while at the same time it is the primary sector for preparedness management and mitigation. The objective of this research is to create a safer network for drivers of the freight vehicles with minimum intervention to the pre-existing infrastructure of Florida state. The rese ...
  • Development of NonProprietary UltraHighPerformance Concrete and Railway Tie Application
    Development of Non-Proprietary Ultra-High-Performance Concrete and Railway Tie Application
    Hasnat, Ariful ;
    Ghafoori, Nader
    2024-05-01 | PDF
    This study reports on properties of non-proprietary ultra-high-performance concretes (UHPCs) for railway ties. The research work is divided into three major phases. The first phase reports on optimization of cementitious materials and aggregates and selection of the most suitable water-to-cementitious materials ratio. In the second phase, the trans ...
  • Energy Harvester Tie for Serving the Needs of the Railroad Industry to Access Electric Power in Remote Locations
    Energy Harvester Tie for Serving the Needs of the Railroad Industry to Access Electric Power in Remote Locations
    Ahmadian, Mehdi ;
    Jones, J. Bernard
    2024-05-01 | PDF
    This study proposes various methods to harvest the mechanical energy present in railcar suspensions and railroad tracks to generate low-power electricity that is suitable for onboard or trackside electronics, using electromagnetic generators. A compact electromagnetic energy harvester that can be installed onboard railcars or wayside on railroad tr ...
  • Mobility and Safety Impacts of Work Zone Lane and Shoulder Widths Summary
    Mobility and Safety Impacts of Work Zone Lane and Shoulder Widths [Summary]
    Noyce, David A. ;
    Qin, Xiao
    2024-05-01 | PDF
    The goal of this project was to quantify the mobility and safety impacts of different combinations of lane width and shy distance to a barrier for a given paved width. The research team developed a device to measure lateral distance and derive speed, vehicle length/type, and headway information under day and night conditions. Data collected at 17 l ...
  • CarpoolBased Parking Assignment Policy Brief
    Carpool-Based Parking Assignment Policy [Brief]
    Rodriguez-Roman, Daniel
    ORCID ICON IMG
    2024-05-01 | PDF
    A new travel demand management (TDM) strategy is proposed that integrates ride-matching and parking management to tackle traffic congestion and air pollution problems that arise when the demand for parking spaces exceeds parking supply. The proposed strategy implements a centralized system that assigns parking spaces, free of out-of-pocket costs, a ...
  • A General Traffic Equilibrium Framework with RideHailing Services That Considers FlowDependent Waiting Time and Public Transit
    A General Traffic Equilibrium Framework with Ride-Hailing Services That Considers Flow-Dependent Waiting Time and Public Transit
    Pang, Jong-Shi ;
    Dessouky, Maged M.
    2024-05-01 | PDF
    We develop a general traffic equilibrium model that considers ride-hailing services provided by Transportation Network Companies (TNCs, e.g., Uber and Lyft) and customer waiting. The equilibrium model integrates three interacting sub-models, including TNCs' decision on dispatching ride-hailing vehicles, travelers' choice of which mode to use, and q ...
  • Computer Vision for Traffic Monitoring
    Computer Vision for Traffic Monitoring
    Thompson, Matthew ;
    Lowry, Michael
    2024-05-01 | PDF
    This project examined computer vision applications for traffic monitoring and safety analysis. The focus was on evaluating the open-source computer vision code that we developed. Three case studies were completed using our computer vision code. The code was written in Python and uses a detection model called YOLOv8. The first case study demonstrate ...
  • Mobility and Safety Impacts of Work Zone Lane and Shoulder Widths
    Mobility and Safety Impacts of Work Zone Lane and Shoulder Widths
    Chitturi, Madhav V. ;
    Vorhes, Glenn
    2024-05-01 | PDF
    The goal of this project was to quantify the mobility and safety impacts of different combinations of lane width and shy distance to a barrier for a given paved width. The research team developed a device to measure lateral distance and derive speed, vehicle length/type, and headway information under day and night conditions. Data collected at 17 l ...
  • Impacts of COVID19 Induced Active Transportation Demand on the Built Environment and Public Health
    Impacts of COVID-19 Induced Active Transportation Demand on the Built Environment and Public Health
    Dadashova, Bahar ;
    Lee, Chanam
    2024-05-01 | PDF
    COVID-19 had a significant impact on people’s mobility. According to observational studies, the number of people bicycling and walking increased considerably during the social distancing orders. Various reasons may have contributed to this surge in bicycling and walking activities during the lockdown period, such as limited opportunities for physic ...
  • Heterogeneous Preferences for Activities While Traveling in Autonomous Vehicles Relationships with Travel Contexts and Attitudes
    Heterogeneous Preferences for Activities While Traveling in Autonomous Vehicles: Relationships with Travel Contexts and Attitudes
    Kim, Ilsu ;
    Lee, Yongsung
    2024-05-01 | PDF
    Although the literature on autonomous vehicles (AVs) has been growing with a focus on adoption, expected changes in travel behavior, and travel demand and land use in the future, few studies have analyzed envisioned activities in AVs, which will affect all those outcomes at the micro level. To address this gap, this study examines preferred activit ...
  • Cargo Consolidation Routing and Location Optimization to Reduce Traffic Congestion by Minimizing Commercial Heavy Vehicle Trips
    Cargo Consolidation, Routing, and Location Optimization to Reduce Traffic Congestion by Minimizing Commercial Heavy Vehicle Trips
    Monsreal, Mario ;
    Ozkul, Seckin
    2024-05-01 | PDF
    Commercial heavy vehicles, given their frequency of acceleration and deceleration, impact the traffic stream more than passenger cars, leading to greater congestion on the roads. Mixed-cargo shipments, or cargo consolidation, is an operational strategy that has gained traction in many industries because it reduces transportation costs while increas ...
  • Pedestrian Level of Traffic Stress
    Pedestrian Level of Traffic Stress
    Swift, Sydney ;
    Schneider, Robert J
    2024-05-01 | PDF
    This report presents a Pedestrian Level of Traffic Stress (PLTS) tool that can be used to represent how comfortable pedestrians feel around motor vehicle traffic on roadways. It is a project-scale tool that is typically applied within specific roadway corridors or neighborhood areas. PLTS has two components that assess how stressful it is for pedes ...
  • Cargo Consolidation Routing and Location Optimization to Reduce Traffic Congestion by Minimizing Commercial Heavy Vehicle Trips Brief
    Cargo Consolidation, Routing, and Location Optimization to Reduce Traffic Congestion by Minimizing Commercial Heavy Vehicle Trips [Brief]
    Monsreal, Mario ;
    Ozkul, Seckin
    2024-05-01 | PDF
    Commercial heavy vehicles, given their frequency of acceleration and deceleration, impact the traffic stream more than passenger cars, leading to greater congestion on the roads. Mixed-cargo shipments, or cargo consolidation, is an operational strategy that has gained traction in many industries because it reduces transportation costs while increas ...
  • Barriers to Reducing the Carbon Footprint of Transportation Part 2 Investigating Evolving Travel Behaviors in the PostPandemic Period in California
    Barriers to Reducing the Carbon Footprint of Transportation Part 2: Investigating Evolving Travel Behaviors in the Post-Pandemic Period in California
    Ozbilen, Basar ;
    Gulhare, Siddhartha
    2024-05-01 | PDF
    During the early months of the pandemic, stay-at-home orders and concerns about infection catalyzed a shift toward online activities, such as remote work and e-shopping, resulting in a significant decrease in conventional travel. However, as the effects of the pandemic diminished, the pandemic-induced online activities began to subside, and convent ...
  • Barriers to Reducing the Carbon Footprint of Transportation Part 1 Support to the Clean Miles Standard Policy Making
    Barriers to Reducing the Carbon Footprint of Transportation Part 1: Support to the Clean Miles Standard Policy Making
    Giller, James ;
    Compostella, Junia
    2024-05-01 | PDF
    Transportation Network Companies (TNCs), also referred to as ridehailing companies, have experienced rapid growth in the past decade. This report focuses on the quickly evolving transportation patterns resulting from the adoption of ridehailing as part of the efforts accompanying the implementation of the Clean Miles Standard (CMS) regulation. Base ...
  • Beneficial Reuse of Landfilled Fly Ash in Transportation Infrastructure
    Beneficial Reuse of Landfilled Fly Ash in Transportation Infrastructure
    Shakouri,Mahmoud ;
    Zhang, Chengyi
    2024-05-01 | PDF
    This research explores the influence of thermo-mechanical beneficiation methods on the physicochemical characteristics and reactivity of fly ashes disposed of in landfills (LFAs) obtained from power plants in Wyoming and Colorado, USA. An in-depth assessment was conducted on the mechanical and performance aspects of mortar samples incorporating the ...
  • What Do Americans Think About Federal Tax Options to Support Transportation Results From Year Fifteen of a National Survey
    What Do Americans Think About Federal Tax Options to Support Transportation? Results From Year Fifteen of a National Survey
    Agrawal, Asha Weinstein ;
    Nixon, Hilary
    2024-05-01 | What Do Americans Think About Federal Tax Options to Support Transportation? | PDF
    This report summarizes the results from the fifteenth year of a national public opinion survey asking U.S. adults questions related to their views on federal transportation taxes. A nationally representative sample of 2,522 respondents completed the online survey from February 7 to March 12, 2024. The questions test public opinions about raising th ...
  • What Do Americans Think About Federal Tax Options to Support Transportation Results From Year Fifteen of a National Survey Brief
    What Do Americans Think About Federal Tax Options to Support Transportation? Results From Year Fifteen of a National Survey [Brief]
    Agrawal, Asha Weinstein ;
    Nixon, Hilary
    2024-05-01 | What Do Americans Think About Federal Tax Options to Support Transportation? | PDF
    A nationally representative sample of 2,522 respondents completed the online survey in February and March 2024. The survey collected data on respondents’ opinions about gasoline taxes and mileage fees, views on the quality of their local transportation system, priorities for federal transportation spending, travel behavior habits, and sociodemograp ...
861 - 880 / 9369