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The annual number of commercial motor vehicle (CMV) crashes in the U.S. has been increasing since 2009. In Kentucky, the number of CMV crashes rose 27% from 2009 to 2016. Of particular concern are crossover crashes involving CMVs. These occur when a vehicle leaves its intended path and veers into the path of oncoming traffic, typically resulting in head on or sideswipe opposite-direction collisions.

To determine whether installing cable median barriers can mitigate crossover crashes involving CMVs, this study leveraged analysis by a panel of experts and the development of safety performance functions and crash modification factors. The panelists contend that cable median barriers can prevent or mitigate CMV crashes, a conclusion substantiated by statistical modeling.