警けい戒かい信しん号ごう

noun

warning signal; restricted speed signal

Used in railway contexts for a signal that warns of a need to reduce speed or proceed with caution. The 'restricted speed signal' gloss is a specific railway term.

• 運うん転てん士しは警けい戒かい信しん号ごうを確かく認にんして速そく度どを落おとした。

  The driver confirmed the warning signal and reduced speed.

• この区く間かんでは警けい戒かい信しん号ごうが頻ひん繁ぱんに出だされる。

  Warning signals are frequently given in this section.