41-6a-311. Interference with traffic-control devices prohibited -- Traffic signal preemption device prohibited -- Exceptions -- Defense.
(1) Except as provided in Subsection, a person may not alter, deface, damage, knock down, or remove any: (3) traffic-control device; traffic-monitoring device; or railroad traffic-control device.
(2) Except as provided in Subsection, a person may not: (3) knowingly use a traffic signal preemption device to interfere with the authorized operation or the authorized cycle of a traffic-control signal; or operate a motor vehicle on a highway while in possession of a traffic signal preemption device.
(3) The provisions of Subsectionsanddo not apply to a person authorized by the highway authority or railroad authority with jurisdiction over the device. (1) (2)
(4) A violation of Subsectionoris a class C misdemeanor. (1) (2)
(5) It is an affirmative defense to a charge under Subsectionthat the traffic signal preemption device was inoperative and could not be readily used at the time of the citation or arrest. (2)(b)