Utah Code Ann. § 41-6a-1604
(2)
(b)
(3)
(b) A supplemental stop lamp may be mounted on the rear of a vehicle, if the supplemental stop lamp:
(ii) is mounted:
(4)
(5) The department, by rules made under Section 41-6a-1601, may allow:
(6)
(a) As used in this section, "continuously flashing light system" means a light system for a supplemental stop lamp described in Subsection (3)(b) in which: