建议速度标志
MUTCD W13-1P
通过前方路况的安全速度为所示数值。
标志外观
A square yellow plaque with black speed numerals, mounted directly below a warning sign.
什么时候会见到
Below curve, ramp, or other warning signs where the road condition calls for a lower speed than the regular posted limit.
该怎么做
Reduce your speed to the shown advisory speed for the condition ahead; it is the safe speed to travel that section.
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)。