California Code, Vehicle Code - VEH § 23521

(a) Any finding of a juvenile court judge, juvenile hearing officer, or referee of a juvenile court of a commission of an offense in any state, territory, possession of the United States, the District of Columbia, the Commonwealth of Puerto Rico, or the Dominion of Canada that, if committed in this state, would be a violation of Section 23152, is a conviction of a violation of Section 23152 for the purposes of Sections 13352, 13352.3, 13352.4, and 13352.5, and the finding of a juvenile court judge, juvenile hearing officer, or referee of a juvenile court of a commission of an offense that, if committed in this state, would be a violation of Section 23153 is a conviction of a violation of Section 23153 for the purposes of Sections 13352 and 13352.3.

(b) This section shall become operative on September 20, 2005.