These are Wyoming Laws on Lights and Sirens,
Wyoming State Statutes:
31-5-102. Definitions
(ii) "Authorized emergency vehicles" means:
(A) Vehicles of fire departments, fire patrols, game and fish
law enforcement personnel, livestock board
law enforcement personnel, brand inspectors,
law enforcement agencies, public and private ambulances, medical rescue units and extrication rescue units;
( B) Privately owned vehicles used by members of a fire department or emergency service organization while performing or traveling to perform assigned fire fighting or emergency service duties are authorized emergency vehicles if:
(I) Authorized in writing by the appropriate governing body of the city, town or county in which the emergency services organization is located;
(II) Equipped with at least one (1) flashing red, white or amber light visible from the front of the vehicle; and
(III) Equipped with a marker on the front of the vehicle indicating the department or organization with which affiliated.
31-5-106. Authorized emergency vehicles.
(a) The driver of an authorized emergency vehicle, when responding to an emergency call or when in pursuit of an actual or suspected violator of the
law or when responding to but not upon returning from a fire alarm, may:
(i) Park or stand, irrespective of the provisions of this act;
(ii) Proceed past a red or stop signal or stop sign, but only after slowing down as may be necessary for safe operation;
(iii) Exceed the maximum speed limits so long as he does not endanger life or property;
(iv) Disregard regulations governing direction of movement or turning in specified directions.
( B) This section does not relieve the driver of an authorized emergency vehicle from the duty to drive with due regard for the safety of all persons, nor shall this section protect the driver from the consequences of his reckless disregard for the safety of others.
31-5-928. General lighting restrictions; authorized emergency vehicles.
(a) During the times specified in W.S. 31 5 910, any lighted lamp or illuminating device upon a motor vehicle other than head lamps, spot lamps, auxiliary lamps, flashing turn signals, vehicle hazard warning lamps and school bus warning lamps, which projects a beam of light of an intensity greater than three hundred (300) candlepower shall be so directed that no part of the high intensity portion of the beam will strike the level of the roadway on which the vehicle stands at a distance of more than seventy five (75) feet from the vehicle.
( B) Except as required in W.S. 31 5 929 and this section, no person shall drive or move any vehicle or equipment upon any highway with any lamp or device thereon capable of displaying a red light or blue light visible from directly in front of the center thereof.
© Flashing lights are prohibited except as authorized by W.S. 31 5 915, 31 5 921, 31 5 929, 31 5 930, 31 5 931 and this section.
(d) Every authorized emergency vehicle, except police vehicles and as otherwise specified in this subsection, shall, in addition to any other equipment required by
law, be equipped with at least one (1) red lamp visible from five hundred (500) feet in front of the vehicle. Except as otherwise provided in this subsection, every authorized emergency vehicle, may be equipped with one (1) or more blue, white or amber lights. Vehicles used by the department to clear snow from public highways may be equipped with one (1) or more lights of a conspicuous color as specified by rules adopted by the department. Privately-owned vehicles used by members of a fire department or emergency service organization in performing or traveling to perform assigned duties in those organizations shall display at least one (1) flashing white, red or amber light, but no blue lights, visible from five hundred (500) feet in front of the vehicle.
(e) A police vehicle primarily engaged in traffic
law enforcement shall be marked so as to be readily identifiable.
(f) The following vehicles are authorized to display flashing white and amber lights in addition to those otherwise authorized by
law:
(i) Vehicles of civil emergency preparedness agencies;
(ii) Vehicles of municipalities and public service corporations;
(iii) Wreckers;
(iv) Funeral cars.
(g) In addition to these lights otherwise authorized by
law, a wrecker is authorized to display flashing red and blue lights at the scene of any emergency.
31-5-952. Horns and warning devices.
(a) Every motor vehicle when operated upon a highway shall be equipped with a horn in good working order and capable of emitting sound audible under normal conditions from a distance of not less than two hundred (200) feet, but no horn or other warning device shall emit an unreasonably loud or harsh sound or a whistle. The driver of a motor vehicle shall when reasonably necessary to insure safe operation give audible warning with his horn but shall not otherwise use the horn when upon a highway.
( B) No vehicle shall be equipped with nor shall any person use upon a vehicle any siren, whistle or bell, except as otherwise permitted in this section.
© Any vehicle may be equipped with a theft alarm signal device which is so arranged that it cannot be used by the driver as an ordinary warning signal. The theft alarm signal device may use a whistle, bell, horn or other audible signal but shall not use a siren.
(d) Every authorized emergency vehicle, except wreckers, shall be equipped with a siren, whistle or bell, capable of emitting sound audible under normal conditions from a distance of not less than five hundred (500) feet and of a type approved by the superintendent, but the siren shall not be used except when the vehicle is operated in response to an emergency call or in the immediate pursuit of an actual or suspected violator of the
law, in which case the driver of the vehicle shall sound the siren when reasonably necessary to warn pedestrians and other drivers of the approach thereof.
(e) This section applies to motorcycles, motor-driven cycles, multipurpose vehicles and mopeds.
If you need more info on other WY State Statutes Visit:
2010 Wyoming Statutes and Look for the Title 31 Which are the motor Vehicle laws to find out more. If you have Questions, PM me, or contact hawkspringsfire for help on Wyoming laws.