There are local mini-buses that carry about a dozen people at a time. They depart from Dodong Port, the administrative area of the island, then split into different routes; one goes up to the north side while another runs into the center and the other takes to the south. There is a bus between Dodong-ri to Jeodong-ri every 30 minutes. For the latest timetable tourist information should have the most up-to-date schedule. As of November 2011, the basic fare is 1000 won to travel between Dodong and Jeodong. All other fares are 1500 won. The buses do stop running a lot earlier than on mainland Korea last buses depart before 8pm so bear this in mind, as it is difficult to get a taxi at night unless you are in Dodong or Jeodong.
Since convenient transportation is scarce, taxis may be a good option to get around the island. You can catch them at the Dodong Port when you get off. A taxi ride around the island should set you back around 80 to 90,000 won a day. There is also the option to rent a car but knowing someone who speaks the language would be a big plus.
