Each contract carrier shall file with the Commission a schedule of its charges for contract carrier service rendered under each of its contracts pertaining to such service. Such schedule shall be filed within 30 days after the carrier has been notified that the Commission has approved the contract. The permit, or amendment to an existing permit, applicable to such contract will not be issued until such schedule is filed, and failure so to file within 30 days shall terminate the approval of the Commission and the right of the carrier to receive a new permit or amendment to an existing permit.
52 Pa. Code § 23.141