[Code of Federal Regulations] [Title 49, Volume 5] [Revised as of October 1, 2007] From the U.S. Government Printing Office via GPO Access [CITE: 49CFR390.33] [Page 324] TITLE 49--TRANSPORTATION DEPARTMENT OF TRANSPORTATION PART 390_FEDERAL MOTOR CARRIER SAFETY REGULATIONS; GENERAL--Table of Contents Subpart B_General Requirements and Information Sec. 390.33 Commercial motor vehicles used for purposes other than defined. Whenever a commercial motor vehicle of one type is used to perform the functions normally performed by a commercial motor vehicle of another type, the requirements of this subchapter and part 325 of subchapter A shall apply to the commercial motor vehicle and to its operation in the same manner as though the commercial motor vehicle were actually a commercial motor vehicle of the latter type. Example: If a commercial motor vehicle other than a bus is used to perform the functions normally performed by a bus, the regulations pertaining to buses and to the transportation of passengers shall apply to that commercial motor vehicle. [53 FR 18052, May 19, 1988, as amended at 60 FR 38744, July 28, 1995]