Cal. Veh. Code § 40508.6

The superior court in any county may establish administrative assessments, not to exceed ten dollars ($10), for clerical and administrative costs incurred for recording and maintaining a record of the defendant’s prior convictions for violations of this code. The assessment shall be payable at the time of payment of a fine or when bail is forfeited for any subsequent violations of this code other than parking, pedestrian, or bicycle violations.