Except as allowed in Sec. 11.4, Signs Allowed in All Districts without a Permit, and those signs expressly allowed in rights-of-way in Sec. 11.5, Signs Allowed in Right-of-Way, all signs, including supports, frames, and embellishments, that are located within a public right of way or attached, affixed, or painted on any utility pole, light standard, utility box or pedestal, tree, rock, or other natural object located within the public right of way or on public property, except as expressly permitted by the City Public Works Director, or designee; County General Services Director, or designee; or NCDOT, as applicable.