What signs should be hung in the construction elevator protective shed?

In most engineering projects, (construction elevator) construction elevator protective sheds usually hang a white and blue "Construction Elevator Protective Shed" banner with various precautions on it, such as safety belts. Hats, no non-professionals allowed, safety signs and the like.

It is worth noting that some engineering projects refer to "construction elevator protective sheds" as "construction elevator safety passages".

As shown in the picture:

Construction elevator protective shed

Construction elevator safety channel