Correct answer
Yes, they can also indicate the limits of obstacles.
Yes. Article 142 provides for guidance devices to indicate the carriageway edge, curves or direction of travel, the limits of structures or other obstacles, delimit lanes and warn of risks. Delimiting devices, in turn, prohibit passage into the part of the road they delimit. Their functions are not limited to decoration or only marking its edge.
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No, their only function is decorative.
Yes, they can also indicate the limits of obstacles.
No, they only mark the edge and never obstacles.
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