(1) Refunding any bonds issued under this subtitle or any revenue bonds of prior issues, including the payment of any redemption premium on the bonds and any interest accrued or to accrue to the date of redemption of the bonds;

(2) Constructing improvements or extensions to or enlargements of any transportation facilities project; and

(3) Paying all or any part of the cost of any additional transportation facilities project.

(b) The issuance of revenue refunding bonds, the details of their issuance, the rights of their holders, and the rights, duties, and obligations of the Authority with respect to them are governed by the provisions of this subtitle relating to revenue bonds, insofar as those provisions may be applicable.