Sec. 56. (a) Transactions involving tangible personal property are exempt from the state gross retail tax if the person acquiring the property acquires it for incorporation into a transportation facility (as defined in IC 5-23-2-17) under a:
(1) public-private agreement executed in accordance with IC 5-23-8-1(a); or
(2) development agreement executed in accordance with IC 5-23-8-1(b).
(b) The exemption described in subsection (a) shall not apply to the extent that the applicable public-private agreement or development agreement is entered into before January 1, 2023.