Cal. Veh. Code § 11506

Except where the provisions of this code require the refusal to issue a license, the department may issue a license restricted by conditions to be observed in the exercise of the privilege granted. The terms and conditions to be attached to the exercise of the privilege under such restricted license shall be such as may, in the judgment of the department, be in the public interest and suitable to the qualifications of the applicant as disclosed by the application and investigation by the department.