Megacities like Paris, London and New York initiated public bicycle sharing systems with the goal to raise the share of cycling. New York has their Citi bikes, London has the Boris bikes (or officially known as Barclays Cycle Hire) and Paris begun in 2007 the world-famous Vélib’. These are all huge systems with thousands of bicycles. Once, we gave an overview of systems in Korea and until now Seoul offers only two small bike-sharing services with around 340 bicycles. This year the bicycle policy team from Seoul’s transport division was unbelievably busy with setting up a new master plan for the development of such a system. A new public bicycle sharing system will be implemented in five areas in Seoul. It is the beginning of a city-wide bike service and the transformation of Seoul’s road infrastructure to a more diverse network.