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Risk Assessment of Hazardous Material Transportation for Small and Tribal Communities
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2022-09-12
[PDF-3.21 MB]
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Edition:Final Report
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Abstract:Small communities (population <5,000) and Native American communities in Nebraska often lack the means to adequately deal with highway-based crashes involving hazardous materials (HazMat). This research focused on assessing the vulnerability of small and tribal communities in Nebraska to the impacts of highway HazMat crashes. This was achieved by estimating the expected number and type of HazMat crashes per population in each community. Reported HazMat crashes were statistically analyzed to determine if small and Native American communities experienced a higher crash rate per population and per HazMat VMT than large and other small communities respectively. Mean HazMat crash rate per population statistically significantly differed between small and large communities while the mean crash rate comparison between the Native American and other small communities was not statistically significant. For the mean HazMat crash rate per HazMat VMT, neither comparison was found statistically significant. In expected HazMat crashes, actual HazMat crashes per population, and actual HazMat crashes per HazMat VMT, small communities had higher mean values than their larger counterparts. Communities on Native American reservation land experienced a higher expected and lower actual HazMat crash rate per population than other small communities. For actual HazMat crashes per VMT, Native American communities had a higher rate than other small communities.
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