CFR > Title 49 - Transportation > SUBTITLE B—Other Regulations Relating to Transportation > CHAPTER X—SURFACE TRANSPORTATION BOARD, DEPARTMENT OF TRANSPORTATION (Parts 1000-1019–1332) > SUBCHAPTER B—RULES OF PRACTICE (Parts 1100-1129–1187) > PART 1132—PROTESTS REQUESTING SUSPENSION AND INVESTIGATION OF COLLECTIVE RATEMAKING ACTIONS