Closed to the public

(a) Any area within a housing project or on a parcel owned by the authority that is not a public street, road, highway, sidewalk, or county or state bus stop, shall be closed to the public where signs are displayed that read: "Closed to the Public – No Trespassing", or a substantially similar message; provided that the signs: (1) Contain letters no less than two inches in height; and (2) Are placed at reasonable intervals no less than three signs to a mile along the boundary line of the areas that are closed to the public and at all entrances to the property, in a manner and position to be clearly noticeable from outside the boundary line. (b) Any authority office or facility shall be closed to the public during non-business hours where signs are displayed that read: "Closed to the Public – No Trespassing" or a substantially similar message and include hours of operation. (c) For the purposes of this section, "housing project" means a public housing project, elder or elderly housing, as defined in section 356D-1, or state low-income housing project, as defined in section 356D-51.