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.
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Showing 1 to 20 of 20 for “"crash analysis"”.
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Crash Analysis of Degraded Concrete Containment Structures
Dry storage casks are composite structures made of an inner steel liner and a concrete outerpack that houses the basket of the spent nuclear fuel bundle. The concrete of dry cask structures will degrade due to the natural aging and the environmental effect shrinkage, creep, heat transfer, moisture …
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Benefits of Advanced Traffic Management Solutions: Before and After Crash Analysis for Deployment of a Variable Advisory Speed Limit System
… Western Portland and has suffered from high crash rates and peak period congestion in the past. VSL systems are often deployed to address safety, mobility and sustainability related performance. This research seeks to determine whether the newly implemented variable advisory speed limit …
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Performing binary fuzzing using concolic execution
… flow. The system is designed around a Taint/Crash Analysis tool combined with a Path Exploration system to generate symbolic representations of the paths, generating a new set of inputs to be tested. These are implemented using a combination of Intel PIN for the Taint Analysis and Python/z3 …
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Optimum crashworthiness design of grid-stiffened composite fuselage structures
… study, a tool was developed for incorporating crashworthiness into the preliminary design of grid-stiffened composite fuselage structures. The crash analysis of a fuselage structure was simplified through the development of a global-local procedure, which reduces the computational requirements …
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The development of finite element model for Malaysian Female Anthropometric Dummy
In recent years, dummy development for crash test have grown rapidly to decrease the fatalities during crash. These dummies are generated based on anthropometric database consisting of several percentile. Anthropometric data is very important in terms of ergonomics to specify the physical …
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System-wide Safety Analysis of a Complex Transportation Facility: Urban Freeway Off-ramps
… a priority for many years now. A system-wide crash analysis is a practical solution when only a limited budget is available for improving safety of highways. A systematic approach, in contrast to a hotspot analysis, allows for a widespread installation of lower-cost countermeasures across the …
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Front underride protection devices: design methodology for heavy vehicle crashworthiness
… when a passenger vehicle is impacted. To improve crash safety, Front Underride Protection Devices (FUPDs) are a proposed solution to establishing a compatible collision between a passenger vehicle and a heavy vehicle. The European Union is among numerous administrations to regulate FUPDs, yet …
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Framework for Optimally Constrained Autonomous Driving Systems
… requirements (e.g., industry reports, post-crash analysis reports, etc.) reveals that ADS safety arguments, in practice, depend almost completely on well-trained human operators, referred to in the industry as in vehicle fallback test drivers (IFTD). To date, the industry has never fielded a …
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DATA-DRIVEN METHODS FOR REDUCING WRONG-WAY CRASHES ON FREEWAYS
… to reduce this driving errors and related crashes. Wrong-way crash data from Illinois Department of Transportation (IDOT) crash database were collected with 632 possible wrong-way crashes. The real wrong-way crashes were further identified by reviewing the wrong-way crash reports hardcopies …
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A Framework for Identifying Roadway Characteristics Affecting Speeding-Related Crashes in Rural Areas
… disproportionately impacted by these traffic crashes and fatalities, despite the lower traffic volumes and populations. It is important to address this speeding issue, especially in rural areas, which can be done with an organized plan, such as a Speed Management Action Plan (SMAP), and …
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Safety Effects Of Traffic Signal Installations On State Road Intersections In Northeast Florida
… how the installations of traffic signals affect crash experience at intersections, to identify those factors which help predict crashes after a signal is installed, and to develop a crash prediction model. It is the intent of this thesis to supplement the Manual on Uniform Traffic Control Devices …
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Dynamic Fracture of Adhesively Bonded Composite Structures Using Cohesive Zone Models
… Verification of these coupon tests leads to the crash analysis of realistic structures like the square composite tube. Analyses of bonded and unbonded square tubes are presented. These tubes shows a very uncharacteristic failure mode: the composite material disintegrates on impact, and this has …
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Twisted Metal: An Investigation into Observable Factors that Lead to Critical Traffic Events
… variables where 1% of the events were non-injury crashes, 10% were serious, near-crashes, 24% were near-crashes, and the remaining 65% were serious errors with a hazard present. Exploratory analyses were performed to understand the general relationship between event severity levels. Binary …
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Systemic Network-Level Approaches for Identifying Locations with High Potential for Wet and Hydroplaning Crashes
Crashes on wet pavements are responsible for 25% of all crashes and 13.5% of fatal crashes in the US (Harwood et al. 1988). This number represents a significant portion of all crashes. Current methods used by the Department of Transportations (DOTs) are based on wet over dry ratios and simplified …
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Analysis of a car door subjected to side impact
… -weight passenger car, developed by the National Crash Analysis Center (NCAC ) of The George Washington University under contract with the Federal Highway Administration (FHWA) and National Highway Traffic Safety Administration (NHTSA ) of the United States Department of Transportation (US DOT ), …
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Safety Investigation of Crash Rates During Hurricane Evacuations
<p>This study aimed to investigate crash rates across four distinct periods—evacuation, re-entry, emergency, and non-emergency—during Hurricanes Matthew (2016), Irma (2017), and Michael (2018). A notable gap in existing research pertains to understanding crash rates during these critical phases of …
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Urban Expressway Safety and Efficiency Evaluation and Improvement using Big Data
… of traffic congestion, safety is studied through crash analysis. Extensive works have been conducted to identify the contributing factors and remedies of traffic congestion and crashes. These studies lead to gathering consensus that operation and safety have played as two sides of a coin, …
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Exploration and development of crash modification factors and functions for single and multiple treatments
… both fatality and injury rates from road traffic crashes in the United States have been steadily declining over the last six years (2006~2011). However, according to the National Highway Traffic Safety Administration (NHTSA, 2013), 33,561 people died in motor vehicle traffic crashes in the United …
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Analýza dopravních nehod
Tato práce se zabývá komplexním přehledem postupu vyšetřování dopravních nehod. Jsou zde rozebrány jednotlivé kroky při tomto vyšetřování, počínající sběrem a zpracováním dat, prováděným hlavně měřením a fotografováním. Dále je uveden přehled jednotlivých druhů stop a poškození, včetně zranění …