This dissertation investigates wrong-way crashes, which are 27 times more deadly than other crash types. Using GIS and statistical modeling in South Florida, the study identifies roadway design, traffic conditions, and impaired driving as key risk factors. Findings highlight lighting, wider medians, and early police intervention as life-saving prevention strategies.

Eastern red cedar is an invasive species causing ecological and economic damage across Oklahoma. This research develops an economic decision-support model to transform cedar into valuable products by optimizing supply chains, reducing risk for investors, and supporting sustainable industry development that benefits the state economy.