雾信号器

例句：

1. 1. The fog signal device is used to warn drivers of the presence of fog.
   雾信号装置用于警告驾驶员雾的存在。
2. 2. The fog signal device helps to improve visibility in low-light conditions.
   雾信号装置在低光条件下提高可见性。
3. 3. The fog signal device is essential for maintaining safety on icy roads.
   雾信号装置对于维护冰上道路安全至关重要。