RCW 46.29.120: Release from liability.

(1) A person shall be relieved from the requirement for deposit of security for the benefit or protection of another person injured or damaged in the accident in the event he or she is released from liability by such other person.

(2) In the event the department has evaluated the injuries or damage to any minor the department may accept, for the purposes of this chapter only, evidence of a release from liability executed by a natural guardian or a legal guardian on behalf of such minor without the approval of any court or judge.