Which two are correct ways to drive on a road where this sign is posted? Select TWO
On a downhill road the vehicle's weight keeps increasing its speed, so think about how to keep braking power over a long distance and how much space to leave to the vehicle ahead. Note that relying on only one kind of brake can overheat it and cause fading, which reduces braking power.
Answer: ①, ④
Explanation
This sign, with a downward arrow and the gradient, is a caution sign warning of a downhill slope (Enforcement Rule, Appendix 6, No. 117). On a downhill road the vehicle gains speed by itself, so slow down early, use the engine brake as well, and keep a generous distance from the vehicle ahead. Using only the foot brake can overheat the brakes and reduce braking power through fading, and coasting in neutral is dangerous because the engine brake cannot work.
Legal basis: 도로교통법 시행규칙 별표6 117 내리막경사표지