Kentucky State Police Post 15 responded to a single vehicle fatal collision this morning at approximately 6:50 AM on the Louie B. Nunn Cumberland Parkway at the 46 mile marker. Preliminary investigations indicate that Ricky E. Nelson, age 58 of Dawson, GA was operating a 2020 freightliner Cascadia, eastbound on the Cumberland Parkway when he crossed over the median into the west bound lane, through the guardrail, and overturned on the westbound shoulder. Nelson was wearing his seat belt and was pronounced deceased on the scene by the Adair County Coroner. This incident remains under investigation by Trooper Allen Shirley. Tpr. Shirley was also assisted at the scene by other KSP personnel, Adair County Fire Department, Adair County Sheriffs Department, Adair County EMS, and the Columbia Police Department.