This doesn't make much sense from what I'm seeing. They've got a convex mirror across the road, so it's not like they can't see cars coming around the bend, but the fake speed sign is facing the wrong way anyway if they are hoping to discourage people from speeding around that bend... even if it was facing the other way people wouldn't see it lol! What is the road on the approach to the actual sign? If it's a straight road then maybe they are just trying to get people to slow down, as perhaps there have been accidents there in the past?? Appears to be a sharper than average bend that may catch some unaware.