Sec. 5. (a) This article:
(1) applies to:
(A) the IFA;
(B) the NWIRDA; and
(C) the NICTD;
only when acting for the purposes set forth in this article; and
(2) does not apply to:
(A) the IFA;
(B) the NWIRDA; or
(C) the NICTD;
when acting under any other statute for any other purpose.
(b) This article does not apply to a transit development district established by the NWIRDA under IC 36-7.5-4.5.