Upvote:3
I wonder whether this is just a variant of the regular speed limit or whether it holds any special meaning that I should be aware of.
Just a variant of the regular speed limit. Red circle = obligation http://dl.koroad.or.kr/license/en/sub/trafficSigns.jsp (mirror) the blue within the red circle doesn't mean anything, just a color variation.
Source: I drove in South Korea (beware that they are many automated speed cameras -> Android or iOS navigation app that gives an alert when close to a speed camera in South Korea).
Upvote:3
@FrankDernoncourt's answer is correct. Here is a translation of the sign:
어린이 보호 구역: children protection area.
여기부터 속도를 줄이시오: Slow down from here.
So this sign is probably in an area with schools/kindergarten/private academy and asks the drivers to slow down.