A Rolla motorist was involved in a Friday afternoon traffic accident on a south outer road of Interstate 70 in Boone County. The highway patrol says 81-year-old Hazel D. Adams was making a left turn into a parking lot when a 1990 Suzuki GSX motorcycle travelling at a high rate of speed struck her 2018 Chevrolet Equinox. The motorcycle operator, 45-year-old Robert E. Gibson of Columbia, was taken by ambulance to University Hospital in Columbia for treatment of serious injuries.