初心 しょしん運転 うんてん しゃ標識 ひょうしきでしょう
shoshin'untenshahyōshikideshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 初心運転者標識

1. Probably a beginner driver sign.; Likely a new driver sign.

Polite
Presumptive
Conjecture