Wyoming Statutes Title 31. Motor Vehicles § 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.

(c) 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 law enforcement 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 or contracted by a municipality, county or the department to clear snow from public streets, roads or 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:

(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.

(h) In addition to those lights otherwise authorized by law, a public utility vehicle may display one (1) or more flashing red lights visible from five hundred (500) feet of the vehicle when providing emergency services. For purposes of this subsection, “public utility” means as defined in W.S. 37-1-101(a)(vi).