A man died in a crash in Shelby County Monday afternoon. According to the Missouri State Highway Patrol report, 64-year-old Thomas Davidson, of Shelbyville, was traveling northbound on Route BB in a semi that was pulling a grain hopper trailer, when he failed to negotiate a curve, ran off the right side of the roadway and overturned. Davidson died at the scene from his injuries. The crash report says he was not wearing a safety device.