回かい転てん灯とう

noun

revolving light; flashing light; emergency vehicle light

Refers to the rotating or flashing warning lights mounted on emergency vehicles, construction equipment, or security installations.

• パトカーの回かい転てん灯とうが赤あかく光ひかっていた。

  The police car's revolving lights were flashing red.

• 工こう事じ現げん場ばの入いり口ぐちに回かい転てん灯とうが設せっ置ちされている。

  A revolving warning light is installed at the entrance of the construction site.