La. Stat. tit. 32 § 307
Those sections of this chapter which follow immediately, including R.S. 32:308, 32:309, 32:310, 32:311, 32:311.1, and 32:312, relating to clearance lamps, marker lamps and reflectors, shall apply as stated in said sections to vehicles of the types therein enumerated, namely; buses, trucks, truck tractors, motor homes, motor vehicles with mounted truck camper, and trailers, semitrailers and pole trailers, respectively, when operated upon any highway within this state and said vehicles shall be equipped as required and all lamp equipment required shall be lighted at the times mentioned in R.S. 32:301. For purposes of the sections enumerated herein, a truck camper, when mounted upon a motor vehicle, shall be considered part of the permanent structure of that motor vehicle.
La. R.S. § 32:307