(2) The revolving fund shall be deposited with the State Treasurer. The fund shall be at the disposal of the director. The director may designate persons authorized to pay claims from the fund and shall specify the maximum amount of money each designee may draw from the fund. The fund may be used:
(a) To pay salaries, travel expenses, compensation or payments for real property purchased or otherwise acquired, and emergency claims; or
(b) To secure or take advantage of trade discounts and to pay for services, materials and capital outlay.
(3) All vouchers for claims paid from the fund shall be approved by the director and audited by the fiscal officer of the Department of Transportation. When claims are so approved and audited, warrants covering them shall be drawn in favor of the director and shall be used by the director to reimburse the fund. [Amended by 1957 c.9 §1; 1967 c.454 §35; 1969 c.87 §1; 1971 c.598 §6; 1973 c.249 §34; 1979 c.186 §12; 1987 c.265 §1; 1993 c.741 §37]