A Temporary Trip Permit is valid for 72 hours and costs $33 in Arkansas. This permit will be issued in place of IRP plates and can be obtained at the entry port or through a permitting service with some extra processing charges. For vehicles operating unladen and not transferable, a hunter permit is available at the rate $39 with a validity for 30 days. This permits can be obtained through the Arkansas IRP department.
Source of information: http://www.arkansastrucktax.info/temporary-permits.html