생김새
A yellow diamond warning sign with a black legend indicating a ramp meter — a signal controlling how vehicles enter the freeway — ahead.
언제 보게 되나요
You see it on freeway entrance ramps in busier areas where a metered signal releases vehicles onto the freeway one at a time.
무엇을 해야 하나요
Be ready to stop at the ramp signal and then proceed onto the freeway when the light turns green, one vehicle per green.
출처: 통일 교통 통제 시설 매뉴얼(MUTCD) 제11판 — 미국 연방도로청(FHWA).
