(b) The moneys in the Transportation Trust Fund may be appropriated and used for the following purposes:
(2) Payment of the interest and principal on all indebtedness incurred before or after the effective date of this Act, including the payment of all other obligations incurred pursuant to any trust agreement related to such indebtedness, and secured by moneys in the Transportation Trust Fund.
(3) Other transportation-related purposes, including operating expenses, to which moneys in the Transportation Trust Fund are authorized on the effective date of this Act.
(d) If moneys in the Transportation Trust Fund cease to be appropriated for a purpose under paragraph (b)(3) of this section, the moneys may not again be appropriated for a purpose under paragraph (b)(3) of this section except by an act of the General Assembly adopted with the concurrence of three-fourths of all members of each House and separate from an annual budget act, bond and capital improvement act, or grants-in-aid act.
