限高标志
MUTCD W12-2
前方净空高度受限,超高车辆不得通行。
标志外观
A yellow diamond-shaped warning sign showing the black maximum clearance height, marking limited overhead clearance ahead.
什么时候会见到
Ahead of low bridges, overpasses, tunnels, and other overhead structures where tall vehicles may not fit.
该怎么做
Tall vehicles must not proceed if they exceed the posted clearance; know your vehicle's height and find an alternate route if it is too tall.
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)。