Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 53 for “"transportation safety"”.
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Exploring human-vehicle communication to balance transportation safety and efficiency: A naturalistic field study of pedestrian-vehicle interactions
… driving behavior, significantly influencing transportation safety. The study aimed to formalize the tacit communication between vehicle drivers and pedestrians, in order to inform an investigation on effective communication mechanisms between autonomous vehicle and humans. Current autonomous …
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An Investigation of the Floor Attachment Assembly of a Large Transport Aircraft Seat Subjected to Crash Dynamic Loadings
<p>Accident investigations by the National Transportation Safety Board concluded that the passenger seat and restraint systems found in today's aircraft used by the airlines are inadequate to protect the occupant in airplane crashes. Computer models were developed of the seat-track assembly and …
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Evaluating Factors Contributing to Crash Severity Among Older Drivers: Statistical Modeling and Machine Learning Approaches
… the influence of the COVID-19 pandemic on road safety, revealing a paradoxical decrease in overall traffic crashes accompanied by an increase in the rate of severe injuries. This finding underscores the pandemic's transformative effect on driving behaviors and patterns, heightening risks for …
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Dynamic Simulation of General Aviation Cabin Environments and Occupant Restraint Systems
… of General Aviation (GA) accidents, the National Transportation Safety Board (NTSB) has concluded that aircraft cabin environments place the occupant at high risk of suffering severe injuries in an emergency crash situation. Studies of Federal Aviation Administration (FAA) seat tests were used to …
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Analysis of Fatal General Aviation Accidents Occurring from Loss of Control on Approach and Landing
<p>According to the National Transportation Safety Board (NTSB), loss of control in-flight is the greatest cause of general aviation accidents. The purpose of this study was to determine the most frequently occurring probable causes and contributing factors from loss of control in-flight. This …
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Safety Investigation of Crash Rates During Hurricane Evacuations
… to a deeper comprehension of evacuation transportation safety. The methodology employed ArcMap to construct an interactive map for data collection, encompassing key variables such as the number of crashes, traffic volumes, duration of each period under analysis, and roadway segment …
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An Analysis of Airport Surface Deviations using the Human Factors Analysis and Classification System (HFACS)
… from the Federal Aviation Administration Runway Safety database and the National Transportation Safety Board (NTSB) database was performed to determine causal factors for airport surface deviations over a 12-year period, from January 1, 2001 through December 31, 2012. The Human Factors Analysis …
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Redesigning Airport Diagrams with Principles of Cognitive Psychology
… strives for air travel to be the safest form of transportation. The National Transportation Safety Board published a “Most Wanted” list to acknowledge the most threatening safety issues, and runway safety and runway incursions were at the top of their list. Furthermore, runway incursion …
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Use of Rounded Base Turns in General Aviation Traffic Patterns: A Quantitative Analysis
… (GA) continues to be identified as a most-wanted safety improvement by the National Transportation Safety Board (NTSB), with emphasis on low-altitude maneuvering. A possible technique to mitigate I-LOC is modification of the rectangular traffic pattern used by aircraft arriving and maneuvering …
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Knowing when to stop : the investigation of Flight 191
… Nevertheless, investigators from the National Transportation Safety Board are responsible for reconstructing the story from the evidence. They must study the characters and unearth the storyline and all of its twists and turns, and at the end determine the probable cause. The NTSB spent six …
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Study of the I-35W Highway Bridge Collapse Mechanism
… to study the causes of failure. The National Transportation Safety Board attributes the collapse to inadequate load carrying capacity of the steel gusset plates connecting the main truss members at four specific nodes. Permanent deformations of the members in proximity to these nodes were …
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Teamwork Turbulence: Lessons for Multi-Team Systems from a Decade of Aviation Accident Reports
… within the industry. Despite decades of aviation safety and team science research, a critical gap remains in understanding one of the most complex aspects of aviation teaming—multi-team systems (MTSs). This work aimed to address this research gap by investigating teamwork breakdowns within the …
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A comprehensive optimization methodology for strategic environmental sensor station locations
Adverse weather poses a significant threat to transportation safety. Road weather information systems (RWIS) aim to mitigate the impact of adverse weather by detecting spatiotemporal variations of weather and/or road pavement conditions in real time. Due to the lack of a detailed, unified guideline …
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Behavioral Traps in Flight Crew-Related 14 CFR Part 121 Airline Accidents
… Four subject matter experts analyzed 34 National Transportation Safety Board (NTSB) accident reports. Behavioral traps were found in all accidents with Loss of Situational Awareness and Neglect of Flight Planning, Preflight Inspections, and Checklists dominant. The SMEs were able to identify many …
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Disaster relief: Fatugue and countermeasures
… relief workers is an unstudied and critical safety issue in the complex process of disaster management and relief. This paper is designed for leaders in disaster agencies and management as guide to understanding the problem of fatigue in the austere uncontrolled chaos of a disaster event and …
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Analysis of Transient and Steady State Vehicle Handling with Torque Vectoring
… (AGV) have the potential to increase road transportation safety, environmental gains, and passenger comfort. The advent of Electric Vehicles has also facilitated greater flexibility in powertrain architectures and control capabilities. Path Tracking controllers that provide steering input …
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Understanding Motor Vehicle Crash Disparities Across Driver Demographics: The Role of Federally Mandated Rearview Cameras
… in the literature by examining whether observed safety outcomes vary across race/ethnicity and income groups. This dissertation advances the understanding of how ADAS technologies—specifically rearview cameras—are distributed and associated with crash odds, helping to inform more equitable …
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Scalable data analytics techniques for summarizing spatial network-based observations
… or spatio-temporal datasets. For example, transportation planners and engineers may need to identify road segments that pose risks for pedestrians and require redesign. However, SSNO is computationally challenging for the following reasons: (1) There may be a large number of k-subsets of …
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An Analysis of Helicopter EMS Accidents using HFACS: 2000-2012
… of medicine. They are faster than ground-based transportation and able to reach areas considered otherwise remote or impassible. They are highly manoeuvrable, unhindered by traffic, and can land in confined spaces. Further advancements, such as the use of advanced life support equipment and …
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