Section R884-24P-56 - Assessment, Collection, and Apportionment of Property Tax on Commercial Transportation Property Pursuant to Utah Code Ann. Sections 41-1a-301 and 59-2-801A. For purposes of Section 59-2-801, the previous year's statewide rate shall be calculated as follows: 1. Each county's overall tax rate is multiplied by the county's percent of total lane miles of principal routes.2. The values obtained in A.1. for each county are summed to arrive at the statewide rate.B. The assessment of vehicles apportioned under Section 41-1a-301 shall be apportioned at the same percentage ratio that has been filed with the Motor Vehicle Division of the State Tax Commission for determining the proration of registration fees.C. For purposes of Section 59-2-801(2), principal route means lane miles of interstate highways and clover leafs, U.S. highways, and state highways extending through each county as determined by the Commission from current state Geographic Information System databases.Utah Admin. Code R884-24P-56