If people are having trouble getting onto Buckwalter Parkway at the Parker's gas station or from the development across from the gas station, they have no business driving a car.
Maybe they can take lessons by practicing getting onto S.C. 170 from Sun City Hilton Head or using the intersection at S.C. 170 and U.S. 278.
Installing a traffic light on Buckwalter Parkway at Parker's is ludicrous. Do they have money they don't know what to do with? I don't think so.