Advanced warning of restricted headroom may be given by a Restricted headroom ahead warning sign with a supplementary plate showing the distance to the restriction. 前面有通行高度限制的警告标志,用以预先警告驾驶人,并有辅助标志牌,说明限制生效的地点距离有多远。
The red light is a warning sign for stop. 红灯是警告停止行进的信号。
The warning sign was put there for the benefit of the public. 那儿设立了警告牌以引起人们的警惕。
railroad advance warning sign 铁路道口预警标志
No trespassing, ie as a warning sign. 严禁擅自进入（告示用语）.