ARS § 28-649

28-649 - Interference with official traffic control device or railroad sign or signal; possession of traffic preemption emitter; classification; definition 28-649 . Interference with official traffic control device or railroad sign or signal; possession of traffic preemption emitter; classification; definition A. A person shall not attempt without lawful authority to or in fact alter, deface, injure, knock down or remove an official traffic control device, a railroad sign or signal or an inscription, shield or insignia on any device, sign or signal or any part of the device, sign or signal. B. A person shall not possess a traffic preemption emitter unless the person is authorized to possess a traffic preemption emitter within the course and scope of the person's duties with a law enforcement agency, fire department, ambulance service or agency of the federal government, this state or a political subdivision of this state. C. A person who violates this section is guilty of a class 1 misdemeanor. D. For the purposes of this section, "traffic preemption emitter" means strobe, strobe light or any device that is capable of changing the display of any traffic control device used to control the movement of vehicles, bicycles or pedestrians.