What is the meaning of this warning sign?

Question

DentroTest · Accepted Answer

The sign shown in the image corresponds to code P-17a of the General Traffic Regulations. It is a triangular sign with a red border and a white background that warns of danger due to the proximity of a section of road where the roadway narrows on the right side. On encountering this sign, drivers must adapt their speed, take extreme care and, if they are traveling in that lane or on that side, get ready to make a lane change maneuver, yielding to the vehicles already traveling in the lane they are merging into. Speed bumps or potholes are not warned of with this sign, but with P-15 (Uneven road profile). And a steep upward slope is signed with P-16b (Steep hill upwards), not with this one.

What is the meaning of this warning sign?

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