Are there various vertical traffic signs intended to indicate that a road is one-way?

Question

DentroTest · Accepted Answer

Yes, there are several signs for this purpose. The correct answer is affirmative because regulations distinguish mainly between the S-11 sign (One-way carriageway), which can have variants depending on the number of lanes (S-11a for two, S-11b for three), and the S-12 sign (Section of one-way carriageway). Although visually similar (square blue background with a white arrow), they all share a fundamental rule: by indicating that the entire roadway is one-way, they strictly prohibit making a U-turn, as doing so would mean driving against the stipulated direction.

Are there various vertical traffic signs intended to indicate that a road is one-way?

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