One person is dead after a single-vehicle, motorcycle accident Saturday near Flagstaff. DPS officials say the accident happened at around 11:30 a.m. on westbound Highway 180, about six miles west of Baderville and Snowbowl Road. DPS says 63-year-old Ronald Richison of Salem, Oregon was traveling westbound, when he went off the road for an unknown reason and rolled. He was thrown from the motorcycle and was not wearing a helmet at the time of the accident. Richison was pronounced dead at the scene. He was on his own, on a rental Harley Davidson motorcycle, and was visiting family in Flagstaff at the time of the accident.