Korean traffic controls and vulnerable road users
A permitted movement and a clear route are separate conditions. Read the signal governing your lane, obey lawful traffic-officer directions, and then check the actual crossing and exit. A green indication does not remove a pedestrian from a crosswalk or create room beyond a blocked junction. When turning, scan the road you will enter as well as the road you are leaving. A vehicle stopped beside a crossing may hide someone still walking across it.
Signs, lane arrows and surface markings work together. A prohibition sign removes an otherwise possible movement; a navigation instruction cannot override it. Select the required lane early, indicate your intention, and wait for a safe gap. If the desired turn cannot be completed lawfully, continue to a suitable route rather than cut across lanes. At a roundabout, identify the entry control and circulating traffic before committing to the movement.
Children, older pedestrians and people emerging beside buses can need more time or be difficult to see. Reduce speed before the hidden area so that stopping remains possible. A posted maximum is a ceiling, not a promise that this speed is safe in every situation. On narrow streets, maintain clearance and avoid forcing pedestrians into a smaller space. Study Korean controls directly rather than assuming another country's sign shapes or priority rules apply.