Investigation of Utah Highway Speed-Limit Compliance Rates and Evaluation of Speed-Limit Design in Towns along Highways
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2019-06-01
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Edition:Final, Feb 2013 to Feb 2015
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Abstract:In Utah, 14,546 speed-related crashes occurred in rural areas from 2010. 47.4% of them were crashes with injuries. 239 crashes resulted in fatalities and, 1,043 crashes resulted in serious injuries. This shows a crucial need for investigating highway speed-limit compliance rates and evaluating current practices on setting up speed zones in towns along highways in Utah. In this project, our research team applied USLIMITS2 to obtain the appropriate maximum speed limit for studied road segments of small cities and towns in Utah using the collected data. USLIMITS2 employs a decision algorithm to advise the user of the appropriate maximum speed limit for the specific road section of interest. Different data sources are utilized for this research, such as the iPeMS database, the Utah Vehicle Collisions Database, etc. USLIMITS2 is implemented for 38 small cities and towns in Utah. The recommended speed limit of 46 locations of these small cities and towns is higher than the existing speed limit. The recommended speed limit of 4 locations of these small cities and towns is lower than the existing speed limit. It can help transportation agencies find proper countermeasures to control the speed limit to fulfill zero fatalities in Utah.
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