自動 じどう しゃ専用 せんよう道路 どうろだったら
jidōshasen'yōdōrodattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of 自動車専用道路

1. If it were an expressway; If it was an expressway; When it is an expressway

Tara Conditional