Jeju Island, which is seeking to be a Free International City dishonorably ranked the highest increase in traffic accidents and traffic incidence rates among local cities in Korea. Also, the city infrastructure is threatened by the rapid expansion of the highest growth rate of population and tourists. Jeju aims to reach one million population and attract 20 million tourists as a medium and long-term goal in the future. Hence, Jeju Special Self-Governing Provinced that it would construct a circularly regional traffic system (including 4 regional bases) based on the Complex Transfer Center of Jeju International Airport in the Public Transportation Master Revision Plan in August 2016. In this session, we would like to invite experts for transportation and to discuss the most suitable traffic system on the island. In addition, we will debate if it helps for the sustainable development of Jeju Island.