What is the most appropriate way to drive when passing a place where this sign is posted?
A strong crosswind can blow suddenly in open places such as on bridges or around mountain bends and push the vehicle sideways (Enforcement Rule, Appendix 6). Recall what the windsock in the picture means, and think about how to handle your speed and grip on the steering wheel when the vehicle sways.
Answer: ④
Explanation
A picture of a windsock blowing sideways is a caution sign warning of a point where strong crosswinds may blow (Enforcement Rule, Appendix 6, No. 137). It is placed on the right side of the road 50-200 meters before that point, and on bridges or around hillsides the car may be pushed sideways, so slow down and hold the wheel firmly with both hands. The other options assume different signs and also describe actions that are dangerous in themselves, such as cutting in, accelerating, and one-handed driving.
Legal basis: 도로교통법 시행규칙 별표6 137 횡풍표지