625 ILCS 5/2-126
Employees and agents of the Secretary of State, designated by him, who are employed at Drivers License Exam Stations throughout the State are authorized to deposit, on a temporary basis, fees and moneys collected at such stations in banks or savings and loan associations designated by the Secretary of State. Provided, however, that when such funds collected amount to $500 or more, or on the next succeeding 1st or 15th (disregarding Sundays and holidays) day of each month, whichever is earlier, such fees and moneys shall be forwarded to the Secretary of State by such designated banks or savings and loan associations for deposit with the State Treasurer.
No bank or savings and loan association shall receive public funds as permitted by this Section, unless it has complied with the requirements established pursuant to Section 6 of "An Act relating to certain investments of public funds by public agencies", approved July 23, 1943, as now or hereafter amended.
625 ILCS 5/2-126