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Lake-Effect Snow and Motor Vehicle Accidents: Assessing the Spatiotemporal Differences in Crash Risk Among Varying Winter Season Weather Conditions in Northeast Ohio
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Lake-Effect Snow and Motor Vehicle Accidents: Assessing the Spatiotemporal Differences in Crash Risk Among Varying Winter Season Weather Conditions in Northeast Ohio
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Lake-Effect Snow and Motor Vehicle Accidents: Assessing the Spatiotemporal Differences in Crash Risk Among Varying Winter Season Weather Conditions in Northeast Ohio
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Dissertation
Lake-Effect Snow and Motor Vehicle Accidents: Assessing the Spatiotemporal Differences in Crash Risk Among Varying Winter Season Weather Conditions in Northeast Ohio
2024
Overview
Snow and ice-covered roads cause numerous issues from slippery pavement to severely reduced visibility and thus can hinder transportation services and impact public safety. Car crashes are one such common occurrence during wintry conditions. While the overall relationship between traffic accidents and adverse weather conditions has been studied by many, little research has been done to quantify the association between repeated small-scale winter weather events and motor vehicle accidents. Findings that have been reported about these accident hotspots have focused more on snow overall than its source or just lake-effect snow exclusively and not in comparison to synoptic-scale systems. This study aims to address the gap in knowledge about how different types of localized winter weather affect the distribution of motor vehicle accidents over space and time, as well as to expand upon past synoptic climatological research on lake-effect snow. Analyses of crashes in Northeast Ohio by winter season weather type concur with past work on the hierarchy of crash risk by precipitation type being, in order from the highest chance of causing an accident to the lowest, experienced during freezing rain, snow, and then rain. Further results reveal how the inconsistent nature of lake-effect snow influences motor vehicle accident frequency with the largest spatiotemporal indicators of elevated relative risk during lake-effect snow occurring when crash counts are broken down by county/county region, road type, and month. In certain scenarios, lake-effect snow may be associated with up to a 20 times greater likelihood of an accident occurring than in clear conditions. These conclusions can provide important information for local and regional transportation officials to improve winter weather roadway management.
Publisher
ProQuest Dissertations & Theses
Subject
ISBN
9798381461350
