Koreans drive on the right hand side in the street, just as they are doing in the US and many of the rest of the world. Driving in Jeju Town is not complicated, though likely into much more rural elements might be tough Because the streets slim quite a bit. https://brooks7t61z.blogitright.com/34614391/the-definitive-guide-to-visit-jeju-island-제주룸싸롱