(1) If a tariff filing direction relating to a person is in force, the Commission may revoke the direction.
(2) The Commission must give the person a written notice stating that the direction has been revoked.
(3) A revocation of a tariff filing direction takes effect:
(a) at the time when the notice of revocation is given; or
(b) if a later time is specified in the notice of revocation--at that later time.