North Carolina General Statutes Chapter 136. Transportation § 136-89.215. Required action upon receiving bill for open road toll and processing fee for unpaid toll

(a) Action Required.--A person who receives a bill from the Authority for an unpaid open road toll must take one of the following actions within 30 days of the date of the bill:

(b) Fee.--If a person does not take one of the actions required under subsection (a) of this section within the required time, the Authority may add a processing fee to the amount the person owes. The processing fee may not exceed six dollars ($6.00). A person may not be charged more than forty-eight dollars ($48.00) in processing fees in a 12-month period.

The Authority must set the processing fee at an amount that does not exceed the costs of collecting the unpaid toll.