RCW 46.37.190
Warning devices on vehicles—Other drivers yield and stop.
(1) Every authorized emergency vehicle shall, in addition to any other equipment and distinctive marking required by this chapter, be equipped with at least one lamp capable of displaying a red light visible from at least five hundred feet in normal sunlight and a siren capable of giving an audible signal.
(2) Every school bus and private carrier bus shall, in addition to any other equipment and distinctive markings required by this chapter, be equipped with a "stop" signal upon a background not less than fourteen by eighteen inches displaying the word "stop" in letters of distinctly contrasting colors not less than five and nine-tenths inches high, and shall further be equipped with signal lamps mounted as high and as widely spaced laterally as practicable, which shall be capable of displaying to the front two alternately flashing red lights located at the same level and to the rear two alternately flashing red lights located at the same level and these lights shall have sufficient intensity to be visible at five hundred feet in normal sunlight.
(3) Vehicles operated by public agencies whose law enforcement duties include the authority to stop and detain motor vehicles on the public highways of the state may be equipped with a siren and lights of a color and type designated by the state patrol for that purpose. The state patrol may prohibit the use of these sirens and lights on vehicles other than the vehicles described in this subsection.
(4) The lights described in this section shall not be mounted nor used on any vehicle other than a school bus, a private carrier bus, or an authorized emergency or law enforcement vehicle.
(5) The use of the signal equipment described in this section and RCW 46.37.670, except the signal preemption devices used by public transit vehicles and department of transportation, city, or county maintenance vehicles that are not used in conjunction with emergency equipment, shall impose upon drivers of other vehicles the obligation to yield right-of-way and stop as prescribed in RCW 46.61.210, 46.61.370, and 46.61.350.
[ 2020 c 95 § 1; 2005 c 183 § 8; 1993 c 401 § 2; 1987 c 330 § 710; 1985 c 331 § 1; 1982 c 101 § 1; 1971 ex.s. c 92 § 1; 1970 ex.s. c 100 § 5; 1965 ex.s. c 155 § 53; 1963 c 154 § 14; 1961 c 12 § 46.37.190. Prior: 1957 c 66 § 1; 1955 c 269 § 19.]
NOTES:
Rules of court: Monetary penalty schedule—IRLJ 6.2.
Construction—Application of rules—Severability—1987 c 330: See notes following RCW 28B.12.050.
Structure Revised Code of Washington
Chapter 46.37 - Vehicle Lighting and Other Equipment.
46.37.005 - State patrol—Additional powers and duties.
46.37.010 - Scope and effect of regulations—General penalty.
46.37.020 - When lighted lamps and signaling devices are required.
46.37.030 - Visibility distance and mounted height of lamps.
46.37.040 - Head lamps on motor vehicles.
46.37.070 - Stop lamps and electric turn signals required.
46.37.080 - Application of succeeding sections.
46.37.090 - Additional equipment required on certain vehicles.
46.37.100 - Color of clearance lamps, side marker lamps, backup lamps, and reflectors.
46.37.110 - Mounting of reflectors, clearance lamps, identification lamps, and side marker lamps.
46.37.120 - Visibility of reflectors, clearance lamps, identification lamps, and side marker lamps.
46.37.130 - Obstructed lights not required.
46.37.140 - Lamps, reflectors, and flags on projecting load.
46.37.150 - Lamps on vehicles—Parked or stopped vehicles, lighting requirements.
46.37.160 - Hazard warning lights and reflectors on farm equipment—Slow-moving vehicle emblem.
46.37.180 - Spot lamps and auxiliary lamps.
46.37.184 - Red flashing lights on fire department vehicles—Rear-facing blue lights—Combination.
46.37.185 - Green light on firefighters' private cars.
46.37.186 - Fire department sign or plate on private car.
46.37.187 - Green light, sign or plate—Identification card required.
46.37.188 - Penalty for violation of RCW 46.37.184 through 46.37.188.
46.37.190 - Warning devices on vehicles—Other drivers yield and stop.
46.37.191 - Implementing rules.
46.37.196 - Red lights on emergency tow trucks.
46.37.200 - Stop lamps and electric turn signals displayed.
46.37.210 - Additional lighting equipment.
46.37.215 - Hazard warning lamps.
46.37.220 - Multiple-beam road-lighting equipment.
46.37.230 - Use of multiple-beam road-lighting equipment.
46.37.240 - Single-beam road-lighting equipment.
46.37.260 - Alternate road lighting equipment.
46.37.270 - Number of lamps required—Number of additional lamps permitted.
46.37.280 - Special restrictions on lamps.
46.37.290 - Special lighting equipment on school buses and private carrier buses.
46.37.300 - Standards for lights on snow-removal or highway maintenance and service equipment.
46.37.310 - Selling or using lamps or equipment.
46.37.320 - Authority of state patrol regarding lighting devices or other safety equipment.
46.37.330 - Revocation of certificate of approval on devices—Reapproval, conditions.
46.37.340 - Braking equipment required.
46.37.351 - Performance ability of brakes.
46.37.360 - Maintenance of brakes—Brake system failure indicator.
46.37.365 - Hydraulic brake fluid—Defined—Standards and specifications.
46.37.369 - Wheels and front suspension.
46.37.375 - Steering and suspension systems.
46.37.380 - Horns, warning devices, and theft alarms.
46.37.390 - Mufflers required—Smoke and air contaminant standards—Definitions—Penalty, exception.
46.37.395 - Compression brakes (Jake brakes).
46.37.400 - Mirrors, backup devices.
46.37.410 - Windshields required, exception—Must be unobstructed and equipped with wipers.
46.37.420 - Tires—Restrictions.
46.37.4215 - Lightweight and retractable studs—Certification by sellers.
46.37.4216 - Lightweight and retractable studs—Sale of tires containing.
46.37.423 - Pneumatic passenger car tires—Standards—Exception for off-highway use—Penalty.
46.37.424 - Regrooved tires—Standards—Exception for off-highway use—Penalty.
46.37.425 - Tires—Unsafe—State patrol's authority—Penalty.
46.37.430 - Safety glazing—Sunscreening or coloring.
46.37.440 - Flares or other warning devices required on certain vehicles.
46.37.450 - Disabled vehicle—Display of warning devices.
46.37.467 - Alternative fuel source—Placard required.
46.37.470 - Air conditioning equipment.
46.37.480 - Headsets, earphones.
46.37.490 - Safety load chains and devices required.
46.37.495 - Safety chains for towing.
46.37.500 - Fenders or splash aprons.
46.37.505 - Child passenger restraint systems.
46.37.510 - Seat belts and shoulder harnesses.
46.37.517 - Body and body hardware.
46.37.518 - Street rod, custom, and kit vehicles—Optional and required equipment.
46.37.5185 - Street rod and custom vehicles—Blue dot taillights.
46.37.520 - Beach vehicles with soft tires—"Dune buggies"—Inspection and approval required—Fee.
46.37.522 - Motorcycles and motor-driven cycles—When head lamps and tail lamps to be lighted.
46.37.523 - Motorcycles and motor-driven cycles—Head lamps.
46.37.524 - Motor-driven cycles—Head lamps.
46.37.525 - Motorcycles and motor-driven cycles—Tail lamps, reflectors, and stop lamps.
46.37.527 - Motorcycles and motor-driven cycles—Brake requirements.
46.37.528 - Motorcycles and motor-driven cycles—Performance ability of brakes.
46.37.529 - Motor-driven cycles—Braking system inspection.
46.37.535 - Motorcycles, motor-driven cycles, or mopeds—Helmet requirements when rented.
46.37.537 - Motorcycles—Exhaust system.
46.37.539 - Motorcycles and motor-driven cycles—Additional requirements and limitations.
46.37.540 - Odometers—Disconnecting, resetting, or turning back prohibited.
46.37.550 - Odometers—Selling motor vehicle knowing odometer turned back unlawful.
46.37.560 - Odometers—Selling motor vehicle knowing odometer replaced unlawful.
46.37.570 - Odometers—Selling, advertising, using, or installing device registering false mileage.
46.37.590 - Odometers—Purchaser plaintiff to recover costs and attorney's fee, when.
46.37.600 - Liability of operator, owner, lessee for violations.
46.37.610 - Wheelchair conveyance standards.
46.37.620 - School buses—Crossing arms.
46.37.630 - Private school buses.
46.37.640 - Air bags—Definitions.
46.37.660 - Air bags—Replacement requirements, diagnostic system—Penalties.
46.37.670 - Signal preemption devices—Prohibited—Exceptions.
46.37.671 - Signal preemption device—Possession—Penalty.
46.37.672 - Signal preemption device—Use, sale, purchase—Penalty.
46.37.674 - Signal preemption device—Accident—Substantial bodily harm—Penalty.
46.37.675 - Signal preemption device—Accident—Death—Penalty.
46.37.680 - Sound system attachment.
46.37.685 - License plate flipping device—Unlawful use, display, sale—Penalty.