When obtaining an IRP owner operators will receive an apportioned license plate and a cab card (proof of registration) to each registered vehicle. All power units are required to have an apportion tag. 
 
IRP - International Registration Plan is for apportionable vehicles, defined as commercial motor vehicles engaged in interstate commerce (i.e., operating in more than one jurisdiction) with power units that meet one of the following criteria:
 
Have a gross vehicle weight (GVW) over 26,000 pounds
Have three or more axles, regardless of weight
Are used in combination with a trailer for a combined GVW that is over 26,000 pounds