A round blue sign gives an instruction, and sign 226 marks a path meant only for pedestrians, so it permits their entry. Round signs with a red border are prohibition signs: 413 bans pedestrians, and 414 bans pedestrians, bicycles and animals. That is why saying all the signs permit entry is wrong.
Topic: Traffic signs. The bank marks it for these classes: Light truck (C1), Heavy truck (C), Bus (D), Motorcycle (A), Tractor (1), Private car (B).