326.7  Agreements on basis of compact miles.
  Notwithstanding any other law to the contrary, and as an alternative to the procedure set out in section 326.6, the department may enter into agreements providing for proportional registration between this state and other jurisdictions of fleets of commercial vehicles owned by residents or nonresidents engaged in interstate commerce or simultaneously engaged in interstate and intrastate commerce on the basis of compact miles.
  The Iowa prorate percent will be computed by dividing the Iowa miles by the compact miles as defined in section 326.2. If the composite percentage paid by the Iowa resident to each of the states a party to an apportioned registration agreement with Iowa for apportioned registrations is less than one hundred percent, the department will redetermine the registration fees due the state of Iowa to bring the composite percent to one hundred percent. If the composite percent paid by the nonresident fleet operator to each of the states a party to an apportioned registration agreement with Iowa for apportioned registration fees on vehicles base plated in Iowa is less than one hundred percent, the department will redetermine the registration fees due the state of Iowa to bring the composite percent to one hundred percent on such Iowa base plated vehicles.
[S13, §1571-m16; C24, 27, 31, 35, §4866; C39, §5003.04; C46, 50, 54, 58, §321.56; C62, 66, §326.2; C71, 73, 75, 77, 79, 81, §326.7]