Louisiana Revised Statutes Tit. 47, § 474.1. In-transit plates

Any dealer in motor vehicles, or trailers, or semitrailers, or other vehicles, may operate or move any such vehicle, or cause any such vehicle to be operated, or moved, upon the public roads, highways, and bridges without registering the vehicle and without attaching number plates to the vehicle, provided that the vehicle is being delivered to or from the dealer's place of business and provided that the dealer operating or moving or authorizing the operation or movement of the vehicle displays in plain sight upon the vehicle a placard which bears the name and address of the dealer and the words “IN TRANSIT”.