Utah Code Ann. § 41-12a-301
(1) As used in this section:
(2) Except as provided in Subsection (5):
(b) every nonresident owner of a motor vehicle that has been physically present in this state for:
(3)
(5) Owner's or operator's security is not required for any of the following:
(a) off-highway vehicles registered under Section 41-22-3 when operated either:
(6) If an LEA authorizes a state entity or political subdivision of the state to use a school bus: