RCW 46.04.16991: Excessive speeding. (Effective January 1, 2029.)

"Excessive speeding" means traveling at:

(1) 10 miles per hour or greater in excess of the posted speed limit, if the posted speed limit is 40 miles per hour or less; and

(2) 20 miles per hour or greater in excess of the posted speed limit, if the posted speed limit is greater than 40 miles per hour.