The correct answer to this open question is the following.
The error is in the word "sight. " That's not correct. Its "site."
Sight means vision. Is applied to a perspective, view, eyesight or intention. A site refers to a place. In this case, a place where workers are constructing and it's dangerous if you are not properly equipped. So the correct sign should read: "This area is a designated construction site. Hard hats are required at all times."
