The rules in this part implement provisions in 39 U.S.C. chapter 36, subchapter I, establishing rate setting policies and procedures for market dominant products. With the exception of Type 3 rate adjustments, these procedures allow a minimum of 45 days for advance public notice of the Postal Service's planned rate adjustments. Type 3 rate adjustments require the Postal Service to file a formal request with the Commission and are subject to special procedures. [78 FR 52704, Aug. 26, 2013, as amended at 79 FR 33831, June 12, 2014]