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Factors Contributing to South Dakota Crash and Fatality Rates
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2005-10-01
[PDF-992.99 KB]
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Edition:Final; March 2004 to November 2005
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Abstract:Traffic crash and fatality rates reported in South Dakota appear to be higher than those reported by surrounding states. South Dakota’s actions to reduce crash and fatality rates within the state should be based upon a careful review of the crash and fatality rates in South Dakota over the past several years, followed by a thorough investigation of primary contributory factors. The entire process would require a comparison with other states to determine where South Dakota stands relative to promoting a safe driving environment. The degree to which the research objectives and tasks were accomplished must be considered in light of project setbacks that were encountered over the course of the research efforts, not only with South Dakota’s data acquisition, but also with the comparison states of: Montana, New Mexico, Nevada, North Dakota, Utah, and Wyoming. Since the Native American reservations are sovereign and thus not subject to local, state, and federal mandates concerning crash reporting, members of the Technical Panel did not believe that the state received all the non-fatal crashes from these areas. The information obviously presented the project with a substantial limitation in terms of analyzing South Dakota’s crash and fatality rates. This meant that differences in crash characteristics and crash rates throughout the state could be due to differences in reporting procedures. In response to these questions and concerns, the Center for the Advancement of Transportation Safety (CATS) produced a statistical underreporting model to estimate the degree of underreporting in counties with high Native American populations in order to provide the South Dakota Department of Transportation (SCDOT) with justification to engage in further investigations of crash reporting methods in these areas and to provide them with a ballpark idea of how many crashes they could potentially be missing.
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