RCW 46.63.070(5)
(a) Except as provided in (b), (c), and (d) of this subsection, in hearings conducted pursuant to subsections (3) and (4) of this section, the court may defer findings, or in a hearing to explain mitigating circumstances may defer entry of its order, for up to one year and impose conditions upon the defendant the court deems appropriate. Upon deferring findings, the court may assess costs as the court deems appropriate for administrative processing. If at the end of the deferral period the defendant has met all conditions and has not been determined to have committed another traffic infraction, the court may dismiss the infraction.
(b) A person may not receive more than one deferral within a seven-year period for traffic infractions for moving violations and more than one deferral within a seven-year period for traffic infractions for nonmoving violations.
(c) A person who is the holder of a commercial driver's license or who was operating a commercial motor vehicle at the time of the violation may not receive a deferral under this section.
(d) A person who commits negligent driving in the second degree with a vulnerable user victim may not receive a deferral for this infraction under this section.