{"data":{"id":"us-wa/rcw-46.37.670","jurisdiction":"us-wa","citation":"RCW 46.37.670","heading":"Signal preemption devices—Prohibited—Exceptions.","body":"(1) Signal preemption devices shall not be installed or used on or with any vehicle other than an emergency vehicle authorized by the state patrol, an organ transport vehicle, a publicly owned law enforcement or emergency vehicle, a department of transportation, city, or county maintenance vehicle, or a public transit vehicle.\n(2) This section does not apply to any of the following:\n(a) A law enforcement agency and law enforcement personnel in the course of providing law enforcement services;\n(b) A fire station or a firefighter in the course of providing fire prevention or fire extinguishing services;\n(c) An emergency medical service or ambulance in the course of providing emergency medical transportation or ambulance services;\n(d) An operator, passenger, or owner of an authorized emergency vehicle in the course of his or her emergency duties;\n(e) A driver of an organ transport vehicle when a vehicle is transporting a time urgent organ as defined in RCW 68.64.010;\n(f) Department of transportation, city, or county maintenance personnel while performing maintenance;\n(g) Public transit personnel in the performance of their duties. However, public transit personnel operating a signal preemption device shall have second degree priority to law enforcement personnel, firefighters, emergency medical personnel, and other authorized emergency vehicle personnel, when simultaneously approaching the same traffic control signal;\n(h) A mail or package delivery service or employee or agent of a mail or package delivery service in the course of shipping or delivering a signal preemption device;\n(i) An employee or agent of a signal preemption device manufacturer or retailer in the course of his or her employment in providing, selling, manufacturing, or transporting a signal preemption device to an individual or agency described in this subsection.","path":["Title 46","Chapter 46.37"],"source_url":"https://app.leg.wa.gov/rcw/default.aspx?cite=46.37.670","current_through":"July 15, 2026","vintage":"","retrieved_at":"2026-09-06T03:04:57Z","sha256":"53ed2d212b22230cba6bc6dd3494afedd0398d7ce70c36706bc8d6a19e69eeea","source_id":"us-wa","stale":false,"prev":"us-wa/rcw-46.37.660","next":"us-wa/rcw-46.37.671"},"notice":"GroundRules: Original legal text. Not legal advice."}