Devices and mechanisms capable of interfering with or altering signal of traffic-control signal: General prohibition against operating and selling; seizure by police; presence in or on vehicle as prima facie evidence of violation; penalty; additional penalty for violation committed in certain zones; exceptions for providers of mass transit and response agencies.
Nev. Rev. Stat. § 484B.320
in effect1. Except as otherwise provided in this section:
(a) A person shall not operate a vehicle on the highways of this State if the vehicle is equipped with any device or mechanism, including, without limitation, a mobile transmitter, that is capable of interfering with or altering the signal of a traffic-control signal.
(b) A person shall not operate any device or mechanism, including, without limitation, a mobile transmitter, that is capable of interfering with or altering the signal of a traffic-control signal.
2. Except as otherwise provided in this subsection, a person shall not in this State sell or offer for sale any device or mechanism, including, without limitation, a mobile transmitter, that is capable of interfering with or altering the signal of a traffic-control signal. The provisions of this subsection do not prohibit a person from selling or offering for sale:
(a) To a provider of mass transit, a signal prioritization device; or
(b) To a response agency, a signal preemption device or a signal prioritization device, or both.
3. A police officer:
(a) Shall, without a warrant, seize any device or mechanism, including, without limitation, a mobile transmitter, that is capable of interfering with or altering the signal of a traffic-control signal; or
(b) May, without a warrant, seize and take possession of a vehicle equipped with any device or mechanism that is capable of interfering with or altering the signal of a traffic-control signal, including, without limitation, a mobile transmitter, if the device or mechanism cannot be removed from the motor vehicle by the police officer, and may cause the vehicle to be towed and impounded until:
(1) The device or mechanism is removed from the vehicle; and
(2) The owner claims the vehicle by paying the cost of the towing and impoundment.
4. Neither the police officer nor the governmental entity which employs the officer is civilly liable for any damage to a vehicle seized pursuant to the provisions of paragraph (b) of subsection 3 that occurs after the vehicle is seized but before the towing process begins.
5. Except as otherwise provided in subsection 9, the presence of any device or mechanism, including, without limitation, a mobile transmitter, that is capable of interfering with or altering the signal of a traffic-control signal in or on a vehicle on the highways of this State constitutes prima facie evidence of a violation of this section. The State need not prove that the device or mechanism in question was in an operative condition or being operated.
6. A person who violates the provisions of subsection 1 or 2 is guilty of a misdemeanor.
7. A person who violates any provision of subsection 1 or 2 may be subject to any additional penalty set forth in NRS 484B.130 , 484B.135 or 484B.370 .
8. A provider of mass transit shall not operate or cause to be operated a signal prioritization device in such a manner as to impede or interfere with the use by response agencies of signal preemption devices.
9. The provisions of this section do not:
(a) Except as otherwise provided in subsection 8, prohibit a provider of mass transit from acquiring, possessing or operating a signal prioritization device.
(b) Prohibit a response agency from acquiring, possessing or operating a signal preemption device or a signal prioritization device, or both.
10. As used in this section:
(a) Mobile transmitter means a device or mechanism that is:
(1) Portable, installed within a vehicle or capable of being installed within a vehicle; and
(2) Designed to affect or alter, through the emission or transmission of sound, infrared light, strobe light or any other audible, visual or electronic method, the normal operation of a traffic-control signal.
Ê The term includes, without limitation, a signal preemption device and a signal prioritization device.
(b) Provider of mass transit means a governmental entity or a contractor of a governmental entity which operates, in whole or in part:
(1) A public transit system, as that term is defined in NRS 377A.016 ; or
(2) A system of public transportation referred to in NRS 277A.270 .
(c) Response agency means an agency of this State or of a political subdivision of this State that provides services related to law enforcement, firefighting, emergency medical care or public safety. The term includes a nonprofit organization or private company that, as authorized pursuant to chapter 450B of NRS:
(1) Provides ambulance service; or
(2) Provides the level of medical care provided by an advanced emergency medical technician or paramedic to sick or injured persons at the scene of an emergency or while transporting those persons to a medical facility.
(d) Signal preemption device means a mobile transmitter that, when activated and when a vehicle equipped with such a device approaches an intersection controlled by a traffic-control signal, causes:
(1) The signal, in the direction of travel of the vehicle, to remain green if the signal is already displaying a green light;
(2) The signal, in the direction of travel of the vehicle, to change from red to green if the signal is displaying a red light;
(3) The signal, in other directions of travel, to remain red or change to red, as applicable, to prevent other vehicles from entering the intersection; and
(4) The applicable functions described in subparagraphs (1), (2) and (3) to continue until such time as the vehicle equipped with the device is clear of the intersection.
(e) Signal prioritization device means a mobile transmitter that, when activated and when a vehicle equipped with such a device approaches an intersection controlled by a traffic-control signal, causes:
(1) The signal, in the direction of travel of the vehicle, to display a green light a few seconds sooner than the green light would otherwise be displayed;
(2) The signal, in the direction of travel of the vehicle, to display a green light for a few seconds longer than the green light would otherwise be displayed; or
(3) The functions described in both subparagraphs (1) and (2).
(f) Traffic-control signal means a traffic-control signal, as defined in NRS 484A.290 , which is capable of receiving and responding to an emission or transmission from a mobile transmitter.
Source: NV Statutes (Official Site)URL: https://www.leg.state.nv.us/nrs/NRS-484B.htmlFetched: 10/4/2026