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 427 for “"crashes"”.
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The Effects of Cognitive Executive Load on Driving Crashes and Near-Crashes
Previous naturalistic driving studies have shown that visual and manual secondary tasks increase driving crash risk. With the increasing use of infotainment systems in vehicles, secondary tasks requiring cognitive executive demand may increase crash risk, especially for young and older drivers. …
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Characteristics and contributory causes related to large truck crashes (phase-II) - all crashes
… Statistics clearly show that large-truck crashes contribute significantly to an increased percentage of high-severity crashes. It is therefore important for the highway safety community to identify characteristics and contributory causes related to large-truck crashes. During the first …
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Harmful events in guardrail crashes
… intended to reduce the severity of ran-off-road crashes, even the best designs installed in the most appropriate locations cannot eliminate all serious injuries and fatalities associated with guardrail crashes. The performance of guardrails has been examined through controlled crash tests for the …
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Identifying Secondary Crashes by Using Geographic Information System (GIS) and Determining the Secondary Crashes Characteristics
… 2014). The risk of the occurrence of secondary crashes can be six times higher in the presence of a primary crash than that at a normal traffic condition (Yang et al., 2013 and Tedesco, 1994). The purpose of this study is 1) to develop a method to identify the secondary crashes with the primary …
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Analytic Assessment of Collision Avoidance Systems and Driver Dynamic Performance in Rear-End Crashes and Near-Crashes
… to reduce the number and severity of rear-end crashes. Kinematic algorithms within CASs evaluate sensor input and apply assumptions describing human-response timing and deceleration to determine when an alert should be presented. This dissertation presents an analytic assessment of dynamic …
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Analysis of Crashes Involving First Responder Vehicles
… of this research is to investigate and analyze crashes involving first responder vehicles and struck-by crashes. This project concludes that approximately 1.2% of the crashes in the state of Florida involve a first responder vehicles. The findings also highlight characteristics of interest to …
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Analysis of Responder-Involved Struck-by Crashes
… risks of injury and death from struck-by crashes while operating on or near roadways. Annually, about 50 responders are killed, and hundreds more are injured, leading to operational disruptions and damage to life-saving equipment (ERSI, 2024). This study takes a data-driven approach to …
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Estimating Pedestrian Crashes at Urban Signalized Intersections
… models are used to estimate the number of crashes using a set of explanatory variables. The highway safety community has used modeling techniques to predict vehicle-to-vehicle crashes for decades. Specifically, generalized linear models (GLMs) are commonly used because they can model …
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Factors Affecting Severity Level in Speed-Related Crashes and in Identification of Crashes Involving Exceeding Maximum Safe Travel Speed
… factors that influence severity of speed-related crashes on mainline roadway segments, with a particular emphasis on comparing single-vehicle and multiple-vehicle incidents and distinguishing between crashes involving legal speed limit violations and those exceeding the maximum safe travel speed …
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Spatial Analysis of Fatal Automobile Crashes in Kentucky
<p>Fatal automobile crashes have claimed the lives of over 33,000 people each year in the United States since 1995. As in any point event, fatal crash events do not occur randomly in time or space. The objectives of this study were to identify spatial patterns and hot spots in FARS (Fatal Analysis …
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The Dynamics of Currency Crashes and Fundamental Reversions
This dissertation is composed of three chapters. In Chapter 1 I look at the role of real exchange rates in the asset pricing of currencies. I construct portfolios based on signals about the real exchange rate and analyze the returns of these portfolios as they relate to traditional asset pricing …
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Characteristics of Thoracic Organ Injuries in Frontal Crashes
… thoracic injury for belted occupants in frontal crashes. This thesis has investigated the effectiveness of airbags and the characteristics of residual thoracic organ injury incurred by belted occupants in vehicles equipped with airbags. This study was based on the injury outcome of over 28,000 …
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Identification of risk factors for crashes involving older drivers
… of the older drivers in motor vehicle crashes. Examples of potential factors influencing older driver crashes include intersection/roadway geometrics, type of traffic control, traffic signal phasing, light conditions. A methodology is developed to model older driver involvement in …
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Reducing Highway Crashes with Network-Level Continuous Friction Measurements
… highway safety management approach to reduce crashes that result in fatalities, injuries, and property damage only. The dissertation presents four manuscripts. In the first manuscript, orthogonal regression is used to develop models for converting between friction measurements with a SCRIM and …
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Effectiveness of Intersection Advanced Driver Assistance Systems in Preventing Crashes and Injuries in Left Turn Across Path / Opposite Direction Crashes in the United States
Intersection crashes represent one-fifth of all police reported traffic crashes and one-sixth of all fatal crashes in the United States each year. Active safety systems have the potential to reduce crashes and injuries across all crash modes by partially or fully controlling the vehicle in the …
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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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Understanding Fixed Object Crashes with SHRP2 Naturalistic Driving Study Data
Fixed-object crashes have long time been considered as major roadway safety concerns. While previous relevant studies tended to address such crashes in the context of roadway departures, and heavily relied on police-reported accidents data, this study integrated the SHRP2 NDS and RID data for …
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