US lawWashingtonRegulationsTitle 204 — STATE PATROL (EQUIPMENT)Chapter 204-10 — EQUIPMENT STANDARDS204-10-120WAC 204-10-120WAC 204-10-120. SirensLast amended: 2008Year: 2026Length: 18 wordsOfficial source Society of Automotive Engineers (SAE) Standard J1849 is adopted by reference as the standard for emergency vehicle sirens.PreviousWAC 204-10-090