(1) Auto transportation companies may issue supplements to filed tariffs or time schedules to reflect short-term situations.

(2) Auto transportation companies may not issue tariff supplements to make general rate increases.

(3) Supplements are subject to all applicable rules and procedures including transmittal letters, notice to customers and the commission, and proper format.

(4) Supplements to a tariff or time schedule must be numbered consecutively. If a newly filed supplement cancels a previous supplement(s), that information must be clearly shown on the new supplement. For example: "Supplement 6 cancels Supplements 4 and 5."