発はつ炎えん筒とう

noun

warning flare; road flare; railway flare

A pyrotechnic device that produces a bright flame or smoke as a warning signal, commonly used on roads and railways.

• 事じ故こ現げん場ばで発はつ炎えん筒とうを焚たいて後こう続ぞく車しゃに注ちゅう意いを促うながした。

  They lit a warning flare at the accident scene to alert following vehicles.

• 鉄てつ道どう員いんは線せん路ろ脇わきに発はつ炎えん筒とうを設せっ置ちした。

  The railway worker placed a warning flare beside the track.