Section 28-7008 - State highway fund reimbursement; nonhighway costsA. To limit the expenditures of monies in the state highway fund established by section 28-6991, pursuant to article IX, section 14, Constitution of Arizona, to highway purposes, the department of transportation shall: 1. Maintain a strict account of all costs incurred by each function of the department. The department of transportation shall determine and allocate the costs between highway and nonhighway functions, including the costs of wages, salaries, materials, supplies and equipment or facility use.2. Concurrently with or immediately after the determination of all of the costs prescribed in paragraph 1, certify to the department of administration the full amount of all of the costs relating to nonhighway functions.B. On receiving the certification by the department of transportation pursuant to subsection A of this section, the department of administration shall authorize and transfer the full amount of the nonhighway costs from any monies appropriated to the department of transportation from nonhighway user revenues to the state highway fund.