What does the following safety sign mean?
The symbols inside a round blue indication sign show who uses that road (Annex 6 of the Enforcement Rule). Count how many kinds of users are drawn, and compare how the words and shape differ from the pedestrian-only road sign and the bicycle crossing sign.
Answer: ②
Explanation
This sign, showing pedestrians and a bicycle together on a blue circle, indicates a road shared by bicycles and pedestrians and is installed on both sides at necessary points along the section (Enforcement Rule Annex 6, No. 303). The pedestrian-only road sign has no bicycle and carries the words '보행자전용도로', while the bicycle crossing sign is triangular with the words '자전거횡단'. Being a blue circular indication sign, it does not prohibit bicycles either.
Legal basis: 도로교통법 시행규칙 별표6 303 자전거·보행자 겸용도로표지