Idaho Code § 49-1012
Notwithstanding any other provision of law, harvesting machinery may be moved during hours of darkness when that machinery is equipped, in addition to those requirements set forth in chapter 9, title 49, Idaho Code, with a flashing amber-colored light at least four (4) inches in diameter clearly visible from in front of the machinery, a flashing red-colored light at least four (4) inches in diameter clearly visible from the back of the machinery, and the machinery is preceded by a well-lighted pilot vehicle or flagman at least three hundred (300) feet in advance of the vehicle to give warning of the approach of the equipment and followed by a well-lighted pilot vehicle or flagman at least three hundred (300) feet behind the vehicle to give warning of the presence of the equipment on the highway.
Idaho Code § 49-1012