30. The holder of a taxi owner’s permit must ensure that a taxi’s taximeter is sealed at all times. The holder must have the taximeter inspected and have a new seal affixed by the Commission at the holder’s own expense1° within 30 days of the effective date of a change in the rate fixed by the Commission;
2° immediately after the taximeter or taxi transmission is replaced, repaired or altered;
3° immediately after a change in the size of the tires on the drive wheels of the taxi; and
4° every 6 months.