[Code of Federal Regulations] [Title 49, Volume 4] [Revised as of October 1, 2004] From the U.S. Government Printing Office via GPO Access [CITE: 49CFR392.67] [Page 1132] TITLE 49--TRANSPORTATION DEPARTMENT OF TRANSPORTATION PART 392_DRIVING OF COMMERCIAL MOTOR VEHICLES--Table of Contents Subpart G_Prohibited Practices Sec. 392.67 Heater, flame-producing; on commercial motor vehicle in motion. No open flame heater used in the loading or unloading of the commodity transported shall be in operation while the commercial motor vehicle is in motion. [33 FR 19732, Dec. 25, 1968, as amended at 60 FR 38747, July 28, 1995]