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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 581 - 600 of 9272 results
  • Improved Sustainability and Efficiency of PartialDepth Concrete Bridge Deck Repair
    Improved Sustainability and Efficiency of Partial-Depth Concrete Bridge Deck Repair
    Sorensen, Andrew D. ;
    Shanab, Israi I.H. Abu
    2024-08-01 | PDF
    Recently, significant advances have been made in the development of rapid setting cementitious materials for partial-depth bridge deck repair. The rapid set times of these materials allow for traffic to be re-opened onto the bridge deck in several hours versus days once the material has been placed. While this is a substantial improvement in reduci ...
  • Improved Sustainability and Efficiency of PartialDepth Concrete Bridge Deck Repair Research Brief
    Improved Sustainability and Efficiency of Partial-Depth Concrete Bridge Deck Repair [Research Brief]
    Sorensen, Andrew D. ;
    Shanab, Israi I.H. Abu
    2024-08-01 | PDF
    The study’s overall objective is to examine different concrete removal methods to decrease traffic closure time due to the preparation process for partial depth replacement. This effort is intended to improve the efficiency of concrete removal methods as well as evaluate the life cycle sustainability of the techniques. To achieve this objective, th ...
  • Numerical Evaluation of Precast Columns With Grouted Splice Sleeve Connectors Under Sequential Impact and Seismic Loads
    Numerical Evaluation of Precast Columns With Grouted Splice Sleeve Connectors Under Sequential Impact and Seismic Loads
    Sorensen, Andrew D. ;
    Jiang, Jinghui
    2024-08-01 | PDF
    With the development of accelerated bridge construction (ABC), the seismic performance of typical ABC column-footing connections has been evaluated in high earthquake-prone states like Utah, California, Nevada, and Idaho. But to date, the current literature has yet to fully examine the impact behavior of coupler/rebar connections and the component ...
  • Optimal Selection of Upgrade and Maintenance Interventions To Minimize LifeCycle Cost
    Optimal Selection of Upgrade and Maintenance Interventions To Minimize Life-Cycle Cost
    Abdallah, Moatassem ;
    Ozbek, Mehmet E.
    2024-08-01 | PDF
    The maintenance and upgrade of infrastructure and buildings are critical for ensuring their performance, safety, and minimizing costs. However, inadequate planning and budget allocation, as well as resource constraints, often result in delayed maintenance, leading to costly interventions. To address these challenges, this study presents two novel m ...
  • Optimal Selection of Upgrade and Maintenance Interventions To Minimize LifeCycle Cost Research Brief
    Optimal Selection of Upgrade and Maintenance Interventions To Minimize Life-Cycle Cost [Research Brief]
    Abdallah, Moatassem ;
    Ozbek, Mehmet E.
    2024-08-01 | PDF
    This study presents two novel models. The first focuses on bridges and uses machine learning techniques to predict the condition of concrete bridge elements based on the National Bridge Inventory (NBI) and National Bridge Elements (NBE) databases. The model uses binary linear programming to identify the optimal selection of maintenance intervention ...
  • Durability and Volumetric Stability of NonProprietary Ultra High Performance Concrete Mixes Batched With Locally Sourced Materials
    Durability and Volumetric Stability of Non-Proprietary Ultra High Performance Concrete Mixes Batched With Locally Sourced Materials
    Banerji, Srishti ;
    Al Sarfin, Md. Abdullah
    2024-08-01 | PDF
    Ultra-high-performance concrete (UHPC) is distinguished by its superior mechanical and durability properties. These characteristics are attained through a precise mixture design that includes a low water-to-cement ratio, high fineness supplementary cementitious materials (SCMs), and steel fibers. This report presents the evaluation of durability an ...
  • Acoustic Situation Awareness and Its Effects on Pedestrian Safety Within a Virtual Environment
    Acoustic Situation Awareness and Its Effects on Pedestrian Safety Within a Virtual Environment
    Patrick, Rafael N.C. ;
    Jeon, Myounghoon
    2024-08-01 | PDF
    To evaluate the dangers of personal listening devices (PLD) and behavior while navigating crosswalks, 1274 pedestrians were naturalistically observed followed by a survey of 135 pedestrians, and two focus groups. Thereafter, an immersive 1:1 street crossing virtual reality (VR) testbed – based campus crossing environments – was used to investigate ...
  • Evaluation of Transportation Safety and Security Barriers in Bicyclist Accessibility Brief
    Evaluation of Transportation Safety and Security Barriers in Bicyclist Accessibility [Brief]
    Gehrke, Steven Robert ;
    Russo, Brendan J.
    2024-08-01 | PDF
    A continuation of automobile dependence over the past half-century within American cities has resulted in significant public health, environmental, and economic challenges. The further motivation of bicycling as a utilitarian and sustainable travel alternative has been identified as a viable solution to address societal concerns regarding physical ...
  • A Comprehensive Analysis of EV Charging Demand Prediction Infrastructure Planning and Power Network Resilience in the Era of Electric Mobility
    A Comprehensive Analysis of EV Charging Demand Prediction, Infrastructure Planning, and Power Network Resilience in the Era of Electric Mobility
    Tarafdar, Sayantan ;
    Zhang, Yi
    2024-08-01 | PDF
    Electric vehicles (EVs) have gained significant popularity, becoming an attractive option for cleaner transportation systems, with market adoption in the USA growing substantially over the years. However, a key challenge for this expanding market is the limited charging infrastructure in both residential and commercial spaces. This project studies ...
  • Transition of Allowable Stress Rating To Load and Resistance Factor Rating for Timber Bridges Research Brief
    Transition of Allowable Stress Rating To Load and Resistance Factor Rating for Timber Bridges [Research Brief]
    Kim, Yail Jimmy ;
    Wang, Jun
    2024-08-01 | PDF
    The research focused on rating timber bridges with and without hollow structural steel beam repair. On the basis of previously performed laboratory and field tests plus finite element modeling, load effects were computed for two benchmark bridges utilizing three categories of 17 rating vehicles in conjunction with published rating manuals.
  • Development of a Platform to Enable Real Time NonDisruptive Testing and Early Fault Detection of Critical High Voltage Transformers and Switchgears in High SpeedRail
    Development of a Platform to Enable Real Time, Non-Disruptive Testing and Early Fault Detection of Critical High Voltage Transformers and Switchgears in High Speed-Rail
    Zhu, Ming ;
    Jiang, Yingtao
    2024-08-01 | PDF
    Partial discharge (PD) incidents may occur within critical components of high-speed rail electric systems, including transformers, motors, and switchgears. These incidents result from localized defects compromising insulation, unable to withstand electric stress, leading to flashovers. PD propagates and escalates over time, with potentially severe ...
  • ResilienceBased Recovery Planning of Transportation Network Following Earthquakes
    Resilience-Based Recovery Planning of Transportation Network Following Earthquakes
    Wu, Yangyang ;
    Hou, Guangyang
    2024-08-01 | PDF
    An efficient and safe transportation system is essential to communities during the long-term recovery period after earthquakes. A disrupted transportation network due to infrastructure damage or failure affects the functionality of the traffic system and poses increased traffic safety risks. A rational assessment of the traffic network performance ...
  • Transition of Allowable Stress Rating to Load and Resistance Factor Rating for Timber Bridges
    Transition of Allowable Stress Rating to Load and Resistance Factor Rating for Timber Bridges
    Kim, Yail Jimmy
    2024-08-01 | PDF
    This report presents the relevancy of the allowable stress rating (ASR) and the load and resistance factor rating (LRFR) methods for timber bridges. Benchmark bridges constructed in the 1930s have been upgraded with hollow structural steel (HSS) beams and three-dimensional finite element models provide technical information necessary for examining ...
  • Student Leadership Summit University Transportation Centers Open Competition
    Student Leadership Summit - University Transportation Centers Open Competition
    Schrock, Steven D. ;
    Medina, Mario
    2024-08-01 | PDF
    This final report documents the activities conducted during this grant. The original intent of the grant was to organize and hold a student leadership summit associated with the Missouri Valley District of the Institute of Transportation Engineers. In the event, the COVID pandemic restrictions put in place by many universities from 2020 to 2022 req ...
  • Sensitivity and Accuracy Assessment of Vehicle WeighinMotion System Measurement Errors Using InPavement StrainBased Sensors
    Sensitivity and Accuracy Assessment of Vehicle Weigh-in-Motion System Measurement Errors Using In-Pavement Strain-Based Sensors
    Lu, Pan ;
    Tolliver, Denver
    2024-08-01 | PDF
    The rapid increase in traffic volume and heavy vehicle loads is causing accelerated deterioration of pavement infrastructure worldwide. This research investigates the impact of overweight and dynamic axle loads on pavement performance, employing advanced weigh-in-motion (WIM) systems and machine learning models to enhance predictive accuracy. By in ...
  • Sensitivity and Accuracy Assessment of Vehicle WeighinMotion System Measurement Errors Using InPavement StrainBased Sensors Brief
    Sensitivity and Accuracy Assessment of Vehicle Weigh-in-Motion System Measurement Errors Using In-Pavement Strain-Based Sensors [Brief]
    Lu, Pan ;
    Tolliver, Denver
    2024-08-01 | PDF
    The rapid increase in traffic volume and heavy vehicle loads is causing accelerated deterioration of pavement infrastructure worldwide. This research investigates the impact of overweight and dynamic axle loads on pavement performance, employing advanced weigh-in-motion (WIM) systems and machine learning models to enhance predictive accuracy. By in ...
  • Energy and Emissions Impacts of Atlantas Reversible Express Toll Lanes and HighOccupancy Toll Lanes
    Energy and Emissions Impacts of Atlanta’s Reversible Express Toll Lanes and High-Occupancy Toll Lanes
    Lu, Hongyu ;
    Liu, Haobing
    2024-08-01 | PDF
    This report summarizes the impact on corridor-level energy use and emissions associated with the 2018 opening of the I-75 Northwest Corridor (NWC) and I-85 Express Lanes in Atlanta, GA. The research team tracked changes in vehicle throughput on the managed lane corridors (extracted from GDOT’s Georgia NaviGAtor machine vision system after comprehen ...
  • Developing a Portable Railroad Crossing Monitoring System Based on Artificial Intelligence and Image Processing Technology
    Developing a Portable Railroad Crossing Monitoring System Based on Artificial Intelligence and Image Processing Technology
    Qian, Yu ;
    Chen, Yuche
    2024-08-01 | PDF
    This project addresses the urgent need for improved railroad grade crossing safety, where traditional systems often fail to detect and manage unforeseen hazards such as vehicles or pedestrians obstructing tracks. This project develops a cost-effective, portable system for real-time identification, counting, and categorization of objects at railroad ...
  • Investigate Age Impacts on Controlled Flight into Terrain CFIT Crashes in General Aviation
    Investigate Age Impacts on Controlled Flight into Terrain (CFIT) Crashes in General Aviation
    Qi, Yi ;
    Zhao, Qun
    2024-08-01 | PDF
    Controlled Flight into Terrain (CFIT) crash is defined as an unintentional collision with terrain (the ground, a mountain, a body of water, or an obstacle) while an aircraft is under positive control. It is one of three high-risk accident occurrence categories identified by the International Civil Aviation Organization. Although advanced technologi ...
  • Investigating the Impact of COVID19 Pandemic Outbreak on Bike Share Usage and Ridership A Case Study in Houston
    Investigating the Impact of COVID-19 Pandemic Outbreak on Bike Share Usage and Ridership: A Case Study in Houston
    Azimi, Mehdi ;
    Wali, Mustafa Muhammad
    2024-08-01 | PDF
    A bikeshare system is a transportation service where bicycles are available for shared use by individuals for short-term rentals at low or no cost. It offers an affordable, healthy, and environmentally friendly alternative for users, while also serving as a solution for those without personal vehicles and helping to reduce the rise in private car u ...
581 - 600 / 9272