A 74-year-old Rolla man died following a single-vehicle accident at 3:45 Tuesday afternoon on Highway 63, 3 miles north of Cabool in Texas County. The Missouri Highway Patrol reports that a flatbed pickup truck, driven by Rickie V. Walker, crossed the center of the highway, went off the left side of the road and collided with a drainage ditch and fence, and then overturned. Walker was not wearing a seatbelt and was pronounced dead at the scene.