However, Arkansas Uniform Traffic Code does require that every motorcycle display a valid license plate, and that the plate be securely fastened to the rear of the motorcycle in a horizontal position, clearly visible from a distance of at least 50 feet.**
Additionally, the law states that the owner shall not allow the attachment or display of any sign, poster, or other non-essential material that would obstruct or impair the visibility or effectiveness of the license plate.
Given these requirements, it is likely that side-mounted vertical license plates would not be considered legal in Arkansas.
Motorcyclists who are considering installing side-mounted vertical license plates should consult with the Arkansas State Police or the Arkansas Department of Motor Vehicles for more information and to ensure compliance with the law.