COUNTY — A 42-year-old man was airlifted to Holmes Regional Medical Center after a driver southbound on Interstate 95 near mile marker 157 struck him, according to the Florida Highway Patrol.The driver, Shirley Douglas, 60, of Vero Beach, was cited for careless driving after she drifted to the right and collided with Ronald Grate, 42, of Melbourne.Grate was outside his vehicle in the emergency lane having just finished changing a tire, FHP said.