The city of Osan announced via a safety alert message that it will implement traffic control at the Gweol-dong underpass (area around Gweol-dong 119-4) starting at 1:00 p.m. on the 9th due to the risk of flooding caused by heavy rain. Following this measure, vehicles intending to use this section must take a detour. In particular, underpasses can flood rapidly even in a short period of time, so drivers are advised to avoid entering the controlled area and to actively cooperate with on-site traffic guidance. Citizens were urged to drive with extra caution, to frequently check real-time traffic updates and disaster alert messages, and to operate their vehicles safely.