Okla. Admin. Code § 165:30-19-2
In addition to terms defined in the IRP, the Uniform Operational Audit Procedure Guidelines, and the IRP Policies and Procedures Manual, the following words and terms, when used in this Subchapter, shall have the following meaning, unless the context clearly indicates otherwise:
"Applicant" means any person making an application with the Oklahoma Corporation Commission seeking to register a vehicle or vehicles pursuant to the IRP.
"Application" means a filing with the Oklahoma Corporation Commission, seeking to register a vehicle or vehicles with the Commission pursuant to the IRP.
"Apportioned registration" means the proportional registration of a vehicle pursuant to the terms of the IRP and this Subchapter.
"Carrier" means a fleet operator which engages in the transportation of passengers or property for compensation or hauls its own commodity.
"Credentials" means identification plates and cab cards.
"Established account" means any prorate account for which a properly completed original application has been received by the IFTA/IRP Section and all corresponding and assessed fees have been paid in full.
"Grace period" means two (2) months following the expiration of the registration year.
"Interstate" means between or through two (2) or more jurisdictions.
"Intrastate" means from one (1) point within a jurisdiction to another point within the same jurisdiction.
"New operation" means a vehicle or fleet of vehicles not previously registered pursuant to the provisions of the IRP. "New operation" does not include an existing fleet that is expanding the number of vehicles or area of operation.
"Operations" means actual movement of a vehicle. For purposes of this Subchapter, operations may be classified as interstate or a combination of interstate and intrastate.
"Proportional registration" means registration of an apportionable vehicle pursuant to the terms of the IRP and this Subchapter.
"Records" means and includes operational records.
"Registration agent" means a person hired by an applicant or registrant to prepare and/or file applications, supplemental applications, and other documents required for proportional registration in Oklahoma.
"Regular business hours" means 8:30 a.m. to 4:30 p.m. local time.
"Reporting period" or "mileage year" means the period of twelve (12) consecutive months immediately prior to July 1 of the year preceding the year of registration or license.
Okla. Admin. Code § 165:30-19-2