Any display or official notice of and by a governmental agency of the United States, the State, the County, the Township or any of their political subdivisions.

Any official traffic control device.

Any flag, emblem or insignia or a governmental agency of the United States.

Any sign located completely within an enclosed structure provided that the sign is not visible or directed to be seen from the outside of the structure.

Exempt signs may be two (2) sided.

Incidental signs. Incidental signs shall not count against the aggregate sign area allowed for a site. Incidental signs shall meet the following requirements:

Temporary Signs not exceeding eight (8) square feet in area.