(a) If the board determines that implementation of a mass transit plan developed by the transit department is feasible, the board shall order an election to approve a local sales and use tax at the rate determined by the board under Section 453.401 unless the municipality that created the transit department imposes an additional sales and use tax under Section 321.101(b), Tax Code.
(b) The board may not order an election under this section to be held on the same day as an election held by the creating municipality to approve an additional sales and use tax under Section 321.101(b), Tax Code.