INVOICE REQUIREMENTS; PAYMENT DUE DATE.

An invoice containing an assessment for the use of a toll project must:

(1) require payment not later than the 30th day after the date the invoice is mailed; and

(2) conspicuously state:

(A) the amount due;

(B) the date by which the amount due must be paid; and

(C) that failure to pay the amount due in the required period will result in the assessment of an administrative fee.