A.R.S. § 40-1136: Bond obligations of the metropolitan public transit authority

All bonds issued pursuant to this article shall be obligations of the authority issuing such bonds, and payable only in accordance with the terms thereof and shall not be obligations general, special or otherwise of the state of Arizona or any county or municipality thereof. Such bonds shall not constitute a legal debt of the state of Arizona or any county or municipality thereof, and shall not be enforceable out of any funds of the authority other than the income and revenue pledged and assigned to, or in trust for the benefit of, the holder or holders of such bonds.