The signal lamps required on private carrier buses must be constructed in conformance with the society of automotive engineers standard for "school bus red signal lamps," in effect at the time of manufacture of such lamps. All lamps used as signal lamps must meet the requirements set forth for lighting under chapter 204-21 WAC.
Wash. Admin. Code § 204-32-020
Statutory Authority: RCW 46.37.005 and 46.37.290. 08-19-078, § 204-32-020, filed 9/16/08, effective 10/17/08; 99-18-028, § 204-32-020, filed 8/24/99, effective 9/24/99; Order 7001, § 204-32-020, filed 6/10/70, effective 7/15/70.