Montana Title 61. Motor Vehicles § 61-9-213. Lamp or flag on projecting load

(1) Whenever the load upon a vehicle extends to the rear 4 feet or more beyond the rear of the vehicle, the following lamps and reflectors must be displayed at the extreme rear end of the load, at the times specified in 61-9-201:

(2) The red lights and reflectors required under this section must be in addition to the red lights required upon a vehicle. At any other time there must be displayed at the extreme rear end of the load a red flag or cloth not less than 12 inches square, marking the extremities of the load, at each point where a lamp or reflector would otherwise be required by this section.