Ariz. Rev. Stat. § 48-5308
A. All monies in the bond account of the regional transportation fund shall be held in trust for the owners of the bonds. Monies in the bond account:
D. Notwithstanding any other law, from the monies deposited in the construction account of the regional transportation fund in each fiscal year, the board shall distribute:
E. The three hundred thousand dollar distributions prescribed by subsection D of this section are subject to:
F. Beginning with the first fiscal year following voter approval of the regional transportation plan, monies appropriated for each of the following purposes, if approved by a majority of the qualified electors voting at a special or general election, by each municipality or the county in the authority shall not be less than the total amount of general monies spent for those purposes in that municipality or county for fiscal year 2003-2004 adjusted by the annual percentage change for the previous calendar year in the GDP price deflator as defined in section 41-563: