昼間 ひるま障害 しょうがい標識 ひょうしきであれば
hiruma shōgaihyōshikideareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of 昼間障害標識

1. If it were a daytime hazard marker.; If it is a daytime hazard marker.

Ba Conditional