the sound of a bicycle bell) is Seoul's bike sharing system, which was set up in 2015.

Ddareungi was first introduced in Seoul in October 2015 in select areas of the right bank of the Han River.

At that time, rental facilities were established in the center of two subway stations in Chang-dong and Yeouido.

At the end of the year, the Seoul Facilities Corporation launched an unmanned rental service for the Cheonggyecheon.

In September 17, 2009, Mayor Oh Se-hoon, who traveled to Montreal, officially announced that he would introduce ‘a bicycle taxi (named at the time)’, a public bicycle system that can be used anywhere in Seoul, similar to Montreal's BIXI.