생김새
A yellow diamond warning sign with a black symbol of a truck on a downward slope to indicate a steep downgrade ahead.
언제 보게 되나요
It appears at the top of a steep hill or long descent, common on mountain highways and roads with sharp elevation drops.
무엇을 해야 하나요
Control your speed on the downgrade, shift to a lower gear if needed, and avoid riding your brakes.
출처: 통일 교통 통제 시설 매뉴얼(MUTCD) 제11판 — 미국 연방도로청(FHWA).
