(a)(1) If the commissioner finds after hearing that competition is not an effective regulator of the rates charged or that a substantial number of companies are competing irresponsibly through the rates charged or that there are widespread violations of this article, the commissioner may adopt a rule requiring that any subsequent changes in the rates or supplementary rate information be filed with the commissioner at least thirty (30) working days before they become effective.

(2) In the event that the waiting period is imposed pursuant to paragraph (1), the commissioner may extend the waiting period for a period not to exceed thirty (30) additional working days by written notice to the filer before the first thirty-day period expires.

(1) the experience and judgment of the filer and, to the extent the filer wishes or the commissioner requires, the experience and judgment of other insurers or rate service organizations;

(2) the filer's interpretation of any statistical data relied upon;

(3) a description of the actuarial and statistical methods employed in setting the rate; and

(4) any other relevant matters required by the commissioner.