California Code, Vehicle Code - VEH § 12801.10

(a) Nothing in Section 1653.5, 12800, 12801, 12801.5, or 12801.9 authorizes an individual to apply for, or be issued, a commercial driver's license without the submission of his or her social security account number upon application.

(b) This section shall become operative on January 1, 2015, or on the date that the director executes a declaration pursuant to Section 12801.11, whichever is sooner.

(c) This section shall become inoperative on the effective date of a final judicial determination made by any court of appellate jurisdiction that any provision of the act that added this section, or its application, either in whole or in part, is enjoined, found unconstitutional, or held invalid for any reason. The department shall post this information on its Internet Web site.