Wash. Admin. Code § 392-153-020
(1) If you are a teacher certificated under provisions of chapter 28A.410 RCW, you can qualify for a traffic safety endorsement or letter of authorization issued by the superintendent of public instruction to teach the classroom or laboratory phases if you meet the following requirements:
[Statutory Authority: RCW 28A.150.290. WSR 06-08-043, § 392-153-020, filed 3/30/06, effective 4/30/06. Statutory Authority: Chapters 28A.220 and 46.82 RCW. WSR 01-16-003, § 392-153-020, filed 7/18/01, effective 8/18/01. Statutory Authority: RCW 46.20.100(2), 28A.220.020 (2), (3), (4), and 28A.220.030(1). WSR 96-24-044 (Order 96-18), § 392-153-020, filed 11/27/96, effective 12/28/96. Statutory Authority: 1990 c 33. WSR 90-16-002 (Order 18), § 392-153-020, filed 7/19/90, effective 8/19/90. Statutory Authority: RCW 46.81.020. WSR 80-09-027 (Order 80-24), § 392-153-020, filed 7/9/80; Order 5-77, § 392-153-020, filed 7/27/77, effective 9/11/77; Order 13-76, § 392-153-020, filed 12/21/76; Order 7-75, § 392-153-020, filed 12/22/75. Formerly WAC 392-50-030.]