§ 9CEmergency Medical Service Districts (a) The board of county commissioners, or boards if more than one county is involved, may call a special election to determine whether or not an ambulance service district shall be formed. An election shall also be called by the board or boards involved upon petition signed by not less than ten percent (10%) of the registered voters of the area affected. Said area may embrace a county, a part thereof, or more than one county or parts thereof, and in the event the area covers only a part or parts of one or more counties, the area must follow school district boundary lines. All registered voters in such area shall be entitled to vote, as to whether or not such district shall be formed, and at the same time and in the same question authorize a tax levy not to exceed three (3) mills for the purpose of providing funds for the purpose of support, organization, operation and maintenance of district ambulance services, known as emergency medical service districts and hereinafter referred to as "districts." If the formation of the district and the mill levy is approved by a majority of the votes cast, a special annual recurring ad valorem tax levy of not more than three (3) mills on the dollar of the assessed valuation of all taxable property in the district shall be levied. The number of mills shall be set forth in the election proclamation, and may be increased in a later election, not to exceed a total levy of three (3) mills. This special levy shall be in addition to all other levies and when authorized shall be made each fiscal year thereafterArt.X