Mo. Const. art. IV, § 30(d)

1. No state revenues derived from highway users which are to be allocated, distributed or deposited in the state road fund pursuant to either section 30(a) or section 30(b) shall be diverted from the highway purposes and uses specified in subsection 1 of section 30(b). No state revenues derived from highway users which are to be allocated, distributed or deposited in the state road bond fund pursuant to subdivision (3) of subsection 2 of section 30(b) shall be diverted from the highway purposes and uses specified in said subdivision (3). 2. All of the provisions of sections 29, 30(a), 30(b), 30(c) and 30(d) shall be self executing. All of the provisions of sections 29, 30(a), 30(b), 30(c) and 30(d) are severable. If any provision of sections 29, 30(a), 30(b), 30(c) and 30(d) is found by a court of competent jurisdiction to be unconstitutional or unconstitutionally enacted, the remaining provisions of these sections shall be and remain valid. 3. The provisions of sections 29, 30(a), 30(b), 30(c) and 30(d) shall become effective on July 1, 2005. [Effective - 02 Dec 2004 , see footnote]