Ariz. Rev. Stat. § 48-5103
A. A public transportation fund is established for the authority. The fund consists of:
3. Transportation excise tax revenues that are allocated to the fund pursuant to sections 42-6105 and 42-6105.01. The board shall separately account for monies from transportation excise tax revenues allocated pursuant to section 42-6105, subsection D, paragraph 3 for: