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]
source: 33 FR 19732, Dec. 25, 1968, unless otherwise noted.
cite as: 49 CFR 392.67