As I mentioned in my previous messages, this sign indicates the presence of a farm nearby, so it is not a road sign.
This sign was validated by a Pokémon player from my region. The sign I am posting is the same but located on the other side of the village. I can’t get it accepted, and the last one, which is in the village center, is also being rejected.
I think my submissions are being refused because players must assume it is a road sign, but that is not the case.
Here is a short video I recorded and uploaded on Streamable