Which statement about this sign is incorrect?
For double-curve signs, the name depends on which way the upward arrow bends FIRST (Enforcement Rule, Appendix 6). There is a similar sign that is just mirrored left to right, so check the direction of the first bend and also review the numbers in the installation criteria.
Answer: ②
Explanation
An arrow rising from the bottom that bends first right and then left is a caution sign warning of a double curve, right then left (Enforcement Rule, Appendix 6, No. 113). It is installed when the straight distance between the curves is 100 m or less at a design speed of 60 km/h, and placed on the right side of the road 30-200 meters before the curve begins. A road that bends left first has a different, mirrored sign, so option 2 is wrong.
Legal basis: 도로교통법 시행규칙 별표6 113 우좌로이중굽은도로표지