What does this sign mean?

這個標識代表什麼意思？

閱讀相關知識

It remains compulsory even without workers present. Follow the limit until an applicable end or change sign.

臨時限速同樣必須遵守，不能因為施工人員暫時不在場就忽略。應按配套限速數字及後續結束、變更標誌行駛。