前方有信号灯标志
MUTCD W3-3
前方有交通信号灯,准备停车。
标志外观
A yellow diamond warning sign showing a black symbol of a traffic signal with red, yellow, and green lights to warn of a signal ahead.
什么时候会见到
It appears before a traffic light, especially where the signal is hard to see because of a curve, hill, or high approach speed.
该怎么做
Slow down and be ready to stop, since the signal ahead may be red or about to change.
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)。