Utah Code Ann. § 41-1a-1206
(1) Except as provided in Subsections (2) and (3), at the time application is made for registration or renewal of registration of a vehicle or combination of vehicles under this chapter, a registration fee shall be paid to the division as follows:
(c) unless the semitrailer or trailer is exempt from registration under Section 41-1a-202 or is registered under Section 41-1a-301:
(d)
(e)
(2) At the time application is made for registration or renewal of registration of a vehicle under this chapter for a six-month registration period under Section 41-1a-215.5, a registration fee shall be paid to the division as follows:
(3)
(5)
(7) Except as provided in Section 41-6a-1642, a truck may not be registered as a farm truck unless:
(b)