Performing Motorized-To-Non-Motorized Crash Analysis Using Multi-Model Lbs Traffic Data Calibrated Through Random Forest Models,
2023
University of Nebraska-Lincoln
Performing Motorized-To-Non-Motorized Crash Analysis Using Multi-Model Lbs Traffic Data Calibrated Through Random Forest Models, Nicholas Aldridge
Department of Civil and Environmental Engineering: Dissertations, Theses, and Student Research
Traditionally, traffic prediction has been an engineering challenge due to insufficient quantities of data. In this thesis, the use of a new type of data called location-based service (LBS) data from StreetLight (StL) and a large database of multi-modal traffic counts are used to infer vehicle, pedestrian, and bicycle volumes on all road segments in Lincoln, Nebraska. Additional land use features are incorporated into the model from the EPA Smart Location Database (EPA-SLD). The use of random forest models provides strong measures of fit for all modes, with R2 scores of 0.98 for both the bicycle and pedestrian modes …
Study On Performance And Dynamic Response Of Composite Stress Absorber Layer,
2023
1. College of Civil Engineering and Architecture, Hebei University, Baoding, Hebei 071002, China; 2. College of Highway, Chang’an University, Xi’an, Shaanxi 710064, China
Study On Performance And Dynamic Response Of Composite Stress Absorber Layer, Yang Sanqiang, Li Pengfei, Liu Lu, Cao Zilong
Journal of China & Foreign Highway
In order to compare the performance difference among the composite stress absorption layer, SBS stress absorption layer, and glass grille stress absorption layer, the dynamic response law of the composite stress absorption layer was explored. In this paper, based on the composite stress absorption layer composed of glass grille + rubber-modified asphalt gravel sealing layer, the UTM-25 test system was employed to carry out inter-layer shear, inter-layer tension, low temperature bending, and four-point fatigue test. By laying test sections and sensors, strain information of the stress absorption layer under different conditions was collected. It was found that the bonding force …
Analyzing Major Elements Of Crash Injury Severity Involving Priority-I Detriments Of Vision-Zero Plan,
2023
University of Nebraska-Lincoln
Analyzing Major Elements Of Crash Injury Severity Involving Priority-I Detriments Of Vision-Zero Plan, Muhammad Umer Farooq, Cole Madson, Aemal Khattak
Mid-America Transportation Center: Final Reports and Technical Briefs
Road traffic crashes result in significant economic losses for individuals, their families, and entire nations. These losses stem from the expenses associated with injury treatment, as well as the productivity lost due to fatalities or disabilities caused by these injuries. The 2030 Agenda for Sustainable Development set an ambitious target of halving the global number of fatalities and injuries from road traffic crashes by 2020 and achieving zero deaths by 2030, commonly referred to as the 'Target Zero Plan.' The Target Zero Plan prioritizes traffic safety issues into three distinct levels. The three priority levels are determined based on the …
Exploring Statistical And Machine Learning-Based Missing Data Imputation Methods To Improve Crash Frequency Prediction Models For Highway-Rail Grade Crossings,
2023
University of Nebraska-Lincoln
Exploring Statistical And Machine Learning-Based Missing Data Imputation Methods To Improve Crash Frequency Prediction Models For Highway-Rail Grade Crossings, Muhammad Umer Farooq, Aemal Khattak
Mid-America Transportation Center: Final Reports and Technical Briefs
Highway-rail grade crossings (HRGCs) are critical spatial locations of transportation safety because crashes at HRGCs are often catastrophic, potentially causing several injuries and fatalities. Every year in the United States, a significant number of crashes occur at these crossings, prompting local and state organizations to engage in safety analysis and estimate crash frequency prediction models for resource allocation. These models provide valuable insights into safety and risk mitigation strategies for HRGCs. Furthermore, the estimation of these models is based on inventory details of HRGCs, and their quality is crucial for reliable crash predictions. However, many of these models exclude crossings …
Road Work Zone Safety: Investigating Injury Severity In Motor Vehicle Crashes Using Random Effects Multinomial Logit Model,
2023
University of Nebraska-Lincoln
Road Work Zone Safety: Investigating Injury Severity In Motor Vehicle Crashes Using Random Effects Multinomial Logit Model, Aemal Khattak, Muhammad Umer Farooq
Mid-America Transportation Center: Final Reports and Technical Briefs
Work zones serve the purpose of facilitating maintenance and rehabilitation activities on roadways. However, these areas can also present unforeseen conditions to drivers, including narrowed right-of-way, lane shifts, and traffic disruptions. These conditions frequently contribute to vehicular crashes within work zones, resulting in property damage, injuries, and even loss of life. This paper aims to highlight work zone related crash data insights and presents statistical estimates of significant determinants of injury severity by analyzing ten-year crash data (2008-2018) from Nebraska, USA. The examination of crash data helped in highlighting work zone attributes that are empirically associated with serious injury crashes …
Understanding And Modeling Drivers’ En-Route Diversion Behavior During Congestion,
2023
Louisiana State University and Agricultural and Mechanical College
Understanding And Modeling Drivers’ En-Route Diversion Behavior During Congestion, Mohammad Shapouri
LSU Doctoral Dissertations
In the field of transportation, traffic assignment models primarily have been used to forecast driver route preferences, translating their choices into traffic flow patterns across networks. These models are grounded in distinct behavioral theories and strive to explain how drivers navigate routes based on network features and personal tendencies. Using an aggregation approach, conventional traffic assignment models distribute demand among paths, considering utility and attractiveness. Despite their prevalent use in transportation planning and operations, the fundamental behavioral assumptions of these models have rarely been thoroughly explored. This gap is further compounded by their limited consideration of real-time adjustments and choices …
Transportation Components Of The City Of Bennet Comprehensive Plan And Downtown Economic Development Plan,
2023
University of Nebraska-Lincoln
Transportation Components Of The City Of Bennet Comprehensive Plan And Downtown Economic Development Plan, Kyle Mclaughlin
Community and Regional Planning Program: Theses
In partnership with the City of Bennet, the University of Nebraska, and Marvin Planning Consultants, this project assisted the creation of the City’s Comprehensive Plan and Downtown Economic Development Plan by creating a transportation focused report as a supplement to those plans. The project operates in six sections; Introduction and Overview, Evaluate the Present, Engage the Community, Recommendations, Strategies, and Policies, Implementation and Funding, and Monitoring and Evaluation. The project scope included existing conditions understanding, qualitative and quantitative transportation analysis, public engagement and stakeholder meetings, coordination with two plan creators, identifying transportation improvements, description of implementation steps, overview of available …
Kytc Department Of Aviation Aircraft Maintenance Technician (Amt) Program Optimization,
2023
University of Kentucky
Kytc Department Of Aviation Aircraft Maintenance Technician (Amt) Program Optimization, Bethany Paris, P. Gayle Marks, Bryan Gibson
Kentucky Transportation Center Research Report
The aviation industry is a linchpin of Kentucky’s economy. Major firms such as UPS, Amazon, and DHL have major hubs at Louisville Muhammad Ali International Airport (SDF) and Cincinnati/Northern Kentucky International Airport (CVG). As of December 2022, 4,570 aircraft mechanics and service technicians (AMTs) were employed in the state. Demand in this sector is poised to grow. As such, it is critical to understand what resources Kentucky has available to train the next generation of professionals and the number of people the aviation industry is likely to employ statewide over the next decade. Kentucky and the surrounding states are home …
Integrating The Concept Of Complete Streets Into Pavement Preservation,
2023
Louisiana State University and Agricultural and Mechanical College
Integrating The Concept Of Complete Streets Into Pavement Preservation, Sirisha Gangireddy
LSU Master's Theses
This study is motivated by the evident gap in integrating Complete Streets principles into pavement preservation. Complete Streets opportunities, which aim to accommodate all road users, are typically encouraged in all kinds of projects including new construction, reconstruction, preservation, and rehabilitation. While the concept of Complete Streets is understood in terms of new construction (e.g., building sidewalks), its application through pavement preservation programs is not well-developed. To bridge the gap between the Complete Streets and pavement preservation, this study conducted a comprehensive review on how state Department of Transportation (DOTs) are currently incorporating Complete Streets into pavement preservation and identified …
Understanding And Modeling Drivers’ En-Route Diversion Behavior During Congestion,
2023
Louisiana State University and Agricultural and Mechanical College
Understanding And Modeling Drivers’ En-Route Diversion Behavior During Congestion, Mohammad Shapouri
LSU Doctoral Dissertations
In the field of transportation, traffic assignment models primarily have been used to forecast driver route preferences, translating their choices into traffic flow patterns across networks. These models are grounded in distinct behavioral theories and strive to explain how drivers navigate routes based on network features and personal tendencies. Using an aggregation approach, conventional traffic assignment models distribute demand among paths, considering utility and attractiveness. Despite their prevalent use in transportation planning and operations, the fundamental behavioral assumptions of these models have rarely been thoroughly explored. This gap is further compounded by their limited consideration of real-time adjustments and choices …
Ai-Based Bridge And Road Inspection Framework Using Drones,
2023
California State University, Fresno
Ai-Based Bridge And Road Inspection Framework Using Drones, Hovannes Kulhandjian
Mineta Transportation Institute
There are over 590,000 bridges dispersed across the roadway network that stretches across the United States alone. Each bridge with a length of 20 feet or greater must be inspected at least once every 24 months, according to the Federal Highway Act (FHWA) of 1968. This research developed an artificial intelligence (AI)-based framework for bridge and road inspection using drones with multiple sensors collecting capabilities. It is not sufficient to conduct inspections of bridges and roads using cameras alone, so the research team utilized an infrared (IR) camera along with a high-resolution optical camera. In many instances, the IR camera …
A Guide To Navigating Existing And Emerging Sources Of Local Vmt And Travel Data,
2023
California State Polytechnic University - Pomona
A Guide To Navigating Existing And Emerging Sources Of Local Vmt And Travel Data, So-Ra Baek, Dohyung Kim
Mineta Transportation Institute
As the crisis of climate change looms, transportation policy in California continues to emphasize sustainability in land-use and transportation decisions. This report evaluates the implementation of two sustainability-focused policies (Senate Bill 375 and 743) by local governments and the current-state-of-the-practices by metropolitan planning organizations (MPOs) in assisting them in California. The research focuses on local governments’ access and use of vehicle miles traveled (VMT) and transportation data for achieving VMT and greenhouse gas (GHG) reduction by land-use planning. The research also examines the role of MPOs in providing needed transportation data, training, and technical support to its local members to …
The Effects Of Disruption Type, Trip Purpose, Gender, And Age On Driver Diversion Willingness In The United States Of America,
2023
Louisiana State University
The Effects Of Disruption Type, Trip Purpose, Gender, And Age On Driver Diversion Willingness In The United States Of America, James D. Fuller
LSU Master's Theses
When drivers encounter traffic congestion, one of the most common ways to avoid excessive delays is to divert to an alternate route. Despite the commonplace nature of such routing decisions, relatively little is known about the specific influencers, motivators, and preferences that affect diversion choices under disrupted conditions. Understanding these driver motivations is important for improving the ability of transportation authorities to plan, design, operate, and maintain transportation networks. The research described in this thesis utilizes a driver survey to investigate the situational factors and personal characteristics that may play a significant role in determining a decision to divert or …
A Study On Measures To Reduce Greenhouse Gases And Air Pollutants In Domestic Fishing Vessels,
2023
World Maritime University
A Study On Measures To Reduce Greenhouse Gases And Air Pollutants In Domestic Fishing Vessels, Jihong Kim
World Maritime University Dissertations
No abstract provided.
An Interrogation Of The Role Of Ngos In Improving The Maritime Education And Training (Met) System In Kenya,
2023
World Maritime University
An Interrogation Of The Role Of Ngos In Improving The Maritime Education And Training (Met) System In Kenya, Kulthum Hussein Salim
World Maritime University Dissertations
No abstract provided.
Quantifying The Effect Of Covid-19 On Port Congestion,
2023
Louisiana State University
Quantifying The Effect Of Covid-19 On Port Congestion, Corey R. Mayeux
LSU Master's Theses
The Covid-19 pandemic caused unprecedented disruptions in global supply chains and port operations, leading to congestion, delays, and container shortages. Governments implemented containment measures, affecting social behavior and economic activity. Ports faced significant challenges due to shifts in demand, labor shortages, and supply chain bottlenecks. E-commerce surge and other disruptions intensified pressures on ports. The pandemic's impact exacerbated challenges for ports and supply chains, and triggered inflationary pressures. This research aims to investigate the impact of Covid-19 on port congestion and the global supply chain at the Port of Long Beach, Port of New York and New Jersey, Port of …
An Evaluation Of Parameters Which Affect Dairy Herd Movement On Irish Pasture-Based Farms,
2023
Teagasc, Animal & Grassland Research and Innovation Centre, Moorepark, Fermoy, Co.Cork, Ireland; Department of Process, Energy and Transport Engineering, Munster Technological University, Cork, Ireland
An Evaluation Of Parameters Which Affect Dairy Herd Movement On Irish Pasture-Based Farms, Paul James Maher, Michael D. Murphy, Michael Egan, Patrick Tuohy
Publications
In pasture-based grazing systems, farm roadways are a pivotal link to connect paddocks on the grazing platform to the milking parlour. However, their effectiveness in the efficient movement of the dairy herd between the grazing paddocks and the milking parlour has yet to be fully quantified. A validation experiment was conducted on a research farm to analyse characteristics on farm roadways that may affect cow throughput, which was observed as the number of cows per minute (CPM) passing a specified location. Roadway width (R2 = 0.96) and surface condition score (SC) (R2 = 0.78, respectively) were both positively associated with …
2023 Final Report For Databases In The 2022 Traffic Records Improvement Plan: Facilitating The Development Of Projects To Attain The Goals In The Implementation Plan For The 2022-26 Traffic Records Strategic Plan,
2023
University of Kentucky
2023 Final Report For Databases In The 2022 Traffic Records Improvement Plan: Facilitating The Development Of Projects To Attain The Goals In The Implementation Plan For The 2022-26 Traffic Records Strategic Plan, Lenahan O'Connell, Samantha Wright, Reginald Souleyrette
Kentucky Transportation Center Research Report
During fiscal year 2023, with financial support (Grant #M3Da-2022-04) from the Kentucky Office of Highway Safety, the Kentucky Transportation Center (KTC)-continued its work with traffic database officials to facilitate successful attainment of the remaining goals from the 2017-21 Traffic Records Strategic Plan (TRSP), which goals are in the 2022-26 TRSP Transportation Records Improvement Plan (TRIP). For most databases, some new goals were developed; this required further refinement of some projects or strategies to improve database performance. Projects to complete the goals in the TRIP were continued and some completed for the following databases: CRASH, Citation/Adjudication, Injury Surveillance (KIPRC and EMS), …
Erosion Resistant Rock Shoulder,
2023
University of Nebraska-Lincoln
Erosion Resistant Rock Shoulder, Chung R. Song, Richard L. Wood, Basil Abualshar, Mark O'Brien, Bashar Al-Nimri, Mitra Nasimi
Nebraska Department of Transportation: Research Reports
Highway shoulder rocks are exposed to continuous erosion force due to unexpected floodings caused by climate change. The evaluation methods of the erosion resistance of highway shoulder rocks are not currently well-developed. This study developed a new large-scale testing device, the University of Nebraska-Lincoln Erosion Testing Bed (UNLETB), which has the capability of testing the shoulder gravels. Different gradations were tested using UNLETB, and the results distinguished a high-resistant group and a low-resistant group. The low resistant group was treated with different binding agents: Ammonium Lignosulfonate (LIGNO10), Soybean Soap Stock, and DirtGlue. The treated samples showed better erosion resistance based …
Virus Control Aboard A Commuter Bus,
2023
California State University, Long Beach
Virus Control Aboard A Commuter Bus, Hamid Rahai, Jeremy Bonifacio
Mineta Transportation Institute
A major health concern for public transit users is exposure to viruses from other passengers. This numerical study examines virus containment aboard a public bus with changes to the bus ventilation system. The virus was modeled as a 2.5 µm round solid particle released from the mouth of the infectious passenger at a rate of 21 particles per second at a mouth velocity of 0.278 m/sec. The air delivery to the cabin was two linear ceiling slots spanning the length of the bus delivering 59.38 m3/min (2,097 CFM) of air at a mean velocity of 1 m/sec. Two different axial …
