昼間 ひるま障害 しょうがい標識 ひょうしきだったら
hiruma shōgaihyōshikidattara

Noun
Da Copula

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

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

Tara Conditional