Notwithstanding any other requirements of this title, a warning siren when authorized by the board of trustees shall be a permitted use of a site in all zoning districts and shall not be deemed obstructing when located in any required yard or in violation of height restrictions, provided that the village owns the site or holds the right to use the site pursuant to an easement, lease or license agreement. The board of trustees shall not authorize the installation of more than two (2) warning sirens in the village. (Ord. 12-6-7, 6-5-2012)