27 CAR § 110-1111
If compliance is not made by an applicant with the tariff, schedule, and insurance requirements within ninety (90) days from the date notice is given by the State Highway Commission to the applicant or his or her attorney of the extent of the authority to be granted by the commission, the order granting such authority will become null and void, provided notice of appeal has not been filed, or the commission has not granted an extension of time upon a showing of good cause.