禁止掉头标志
MUTCD R3-4
此处禁止掉头。
标志外观
A white square showing a black U-shaped arrow inside a red circle with a red slash through it, marking the movement as banned.
什么时候会见到
Posted at intersections, medians, and divided-highway openings where reversing direction would block traffic or be hazardous.
该怎么做
You must not make a U-turn here; continue on and reverse direction only where it is legally allowed.
相关标志
来源:《统一交通控制设施手册》(MUTCD)第 11 版 — 美国联邦公路管理局(FHWA)。