警示灯

例句：

1. 1. The traffic police placed a warning light on the road to warn drivers of the upcoming construction.
   交通警察在道路上放置了一个警示灯，以提醒司机即将发生的施工。
2. 2. The old house had several warning lights that flickered intermittently.
   这所老房子有几个闪烁不定的警示灯。
3. 3.The driver was instructed to turn on the warning light when approaching a school zone.
   当接近学校区域时，司机被指示打开警示灯。