Apportionable Vehicle

Definition

An apportionable vehicle under the IRP is any power unit operated in two or more IRP member jurisdictions that meets the threshold of (1) two axles and gross weight over 26,000 pounds, (2) three or more axles regardless of weight, or (3) a combination weight over 26,000 pounds. Apportionable vehicles must be registered in the carrier's base jurisdiction with mileage reported per state for fee redistribution. Recreational vehicles, government vehicles, and certain farm and intrastate vehicles are excluded. The classification determines whether IRP plates are required versus operating under temporary trip permits.