Implementation in practice is hindered by fragmented distribution of powers and funds. The initiative led by the then Ministry of Security and Public Administration (restructured in 2014) aimed at increasing traffic safety and especially at reducing fatalities. A study, jointly conducted by the Ministry and the Korea Transport Institute (KOTI), found significant improvements in traffic safety. The study measured the number of people that were injured or died in accidents both before and after the installation of the roundabouts. Compared to the year before the installation, fatalities and severe injures dropped by more than 50% (Table 2.4). The installation of the 192 roundabouts meant that 4 lives were saved and 78 serious injuries - injuries requiring more than three weeks of hospitalisation - were prevented.