What does the following safety sign mean?
💡 Hint
On a caution sign, rounded bumps rising from the road surface show changes in the height of the surface (Enforcement Rule, Appendix 6). One bump and a row of several bumps are different signs, so count them, and also tell them apart from the tunnel, windsock and falling-rocks pictures.
Answer: ④
Explanation
A picture of round bumps rising one after another from the road surface is a caution sign warning that the road surface is uneven (Enforcement Rule, Appendix 6, No. 128). It is placed on the right side of the road 30-200 meters before the uneven surface begins. The car may bounce or the steering may shake, so slow down and hold the wheel firmly. Tunnel, crosswind, and falling-rocks signs have different pictures.
Legal basis: 도로교통법 시행규칙 별표6 128 노면고르지못함표지