Ark. Code Ann. § 23-12-701

Any railroad company or corporation owning or operating a railroad in this state may appoint one (1) or more persons to be designated by the railroad company as a railroad police officer to aid and supplement the law enforcement agencies of this state in the protection of the persons and property of railroad passengers and employees and in the protection of railroad property. The appointment of any such person as a railroad police officer shall be subject to the approval of the Governor of this state.