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 17 of 17 for “"crash rate"”.
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Impact of highway work zones on traffic crashes: A case study in Michigan
… as work zones experience a significant amount of crashes and fatalities each year. To mitigate some of the factors that contribute to these crashes, this paper attempts to deliver guidelines on how to update relevant crash data, identify relevant factors, and create recommendations accordingly. …
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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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Safety Evaluation of Freeway Exit Ramps
… the different factors contributing to the crashes happening on the exit ramp sections. To achieve the research objectives, the research team investigated crash history at 424 sites throughout Florida. The study area includes two parts, the freeway diverge area and the exit ramp sections. …
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The Feasibility of Closing Vehicle Crossings along St. Charles Avenue: A Study of Transit Safety and Performance
… experiences a very high streetcar/automobile crash rate due in large part to the large number of grade vehicle crossings over the tracks that lack signalization. Through traffic modeling, the closure of many of these vehicle crossings and the diversion of automotive traffic to the remaining, …
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Effectiveness of Mandatory Driver Training Programs for Fire Service Drivers
… is defined by a decrease in the number of crashes per number of runs. Two states were identified for comparison, one with mandatory driver training requirements, Washington State (WA) and the other with no requirements, Pennsylvania (PA). Data was collected from state Department of …
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A Safety Analysis of Fatigue and Drowsy Driving in the State of Utah
… of Utah has been a causal factor in thousands of crashes over the years and poses a serious threat to public safety. Consequently, the purpose of this research was to evaluate the impact of drowsy driving in the state, to identify locations where fatigue and drowsy driving may be contributing …
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Potential impacts of connected-autonomous vehicles on congestion and safety : a look at Austin, Texas
… safety benefits of a vehicle system highly saturated with CAVs in Austin, Texas. Traffic factors such as capacity, intersection delay, and crash rate are examined with respect to their effect on an urban corridor in Austin. The case study relies almost entirely on collected field data to be used …
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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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A Prioritization Process for Access Management Implementation in Utah
… identifying features, characteristics, and crash history for 175 arterial road segments on Utah state routes. Stepwise linear regression was applied to the data collected to determine which characteristics of the roads were correlated with crash rate, crash severity, and specific collision …
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Evaluation and Installation Guidelines for Advance Warning Signal Systems in Utah
… posted speed, isolated intersection, high crash rate, approach grade, and heavy vehicle traffic volume. The guidelines for the AWS system design included details about three components: AWS component, advance detection component, and signal timing component. An evaluation matrix was …
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Estimating Pedestrian Crashes at Urban Signalized Intersections
Crash prediction 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 …
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A Three Essay Examination Of Current Pay And Safety Issues In The Truckload Sector Of The Motor Carrier Industry
… industry and has been linked to large truck crashes. Large truck crashes remain a significant problem in the truckload sector of the motor carrier industry. Employing a unique firm level data set from a large U.S. truckload motor carrier, this research showed that higher driver pay reduced …
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Development and evaluation of a collision avoidance system for supervisory control of a micro aerial vehicle
… Alerting (CODA) display was designed and integrated into a smartphone-based MAV control interface. The CODA display uses a combination of visual and haptic alerts to warn the operator of potential obstacles in the environment to help the operator navigate more effectively and avoid collisions. …
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Recurrent-Event Models for Change-Points Detection
… instrumentation. The results indicate that crash and near-crash rate decreases significantly after 73 hours of independent driving after licensure. The models in part one assume identical change-points for all drivers. However, several studies showed that different patterns of risk change …
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Assessment of the Effectiveness of Emergency Lighting, Retroreflective Markings, and Paint Color on Policing and Law Enforcement Safety
… for at least 18 months. This was to assess the rate of near-misses and crash rate to relate the vehicle changes to law enforcement safety. Additionally, rates of citations were assessed, and surveys offered an opportunity for law enforcement to provide their own feedback on the implementations. …
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Evaluating the use of steady burn warning lights on drums for workzone safety
… infrastructure has continued to age and deteriorate. Maintenance and repair work on an existing roadway often presents the challenge of maintaining traffic on the existing roadway while work is being performed, thereby necessitating the use of what is commonly referred to as a roadway "work …
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Modeling Crash Frequencies At Signalized Intersections In Central Flor
A high percentage of highway crashes in the United States occur at intersections. These crashes result in property damage, lost productivity, injury, and even death. Identifying intersections associated with high crash rate is very important to minimize future crashes. The purpose of this study is …