Utah Code Ann. § 41-22-30
(1) As used in this section, "direct supervision" means oversight at a distance:
(b) within which:
(2) A person may not operate and an owner may not give that person permission to operate an off-highway vehicle on any public land, trail, street, or highway of this state unless the person:
(b)
(ii) if under 18 years of age, is under the direct supervision of a person who is at least 18 years of age if operating on a public highway that is:
(3)
(b) It is a defense to a charge under this section, if the person charged:
(i) produces in court a license or an appropriate safety certificate that was: