A worker was killed during a weekend motorcycle race at the Road Atlanta track in Braselton in South Hall. Road Atlanta spokeswoman Kelsi Nilsson confirmed the incident, calling Hazel Harrell’s death “a terrible tragedy, ” but didn’t give further details. Speed Sport, a motorsport news website, cited multiple sources saying Harrell, 60, was struck by a motorcycle that was competing as part of Saturday afternoon’s WERA Cycle Jam. She died as a result of her injuries. “She was a fixture …