California Code, Vehicle Code - VEH § 34501.15

(a) The regulations adopted pursuant to Section 34501 shall require that any driver of a commercial motor vehicle, as defined in Section 15210, be ordered out of service for 24 hours if the driver is found to have 0.01 percent or more, by weight, of alcohol in his or her blood.

(b) This section shall become operative on January 1, 1992, and shall remain operative until the director determines that federal regulations adopted pursuant to the Commercial Motor Vehicle Safety Act of 1986 (49 U.S.C. Sec. 2701 et seq.) contained in that act and Section 391.15 of Title 49 of the Code of Federal Regulations do not require the state to order the operator of a commercial vehicle out of service for 24 hours when the operator has a measurable concentration of alcohol in his or her blood.

(c) The director shall submit a notice of the determination under subdivision (b) to the Secretary of State, and this section shall be repealed upon the receipt of that notice.