Vehicle Code section 23221

(a)

A driver shall not drink any alcoholic beverage or smoke or ingest marijuana or any marijuana product while driving a motor vehicle upon a highway.

(b)

A passenger shall not drink any alcoholic beverage or smoke or ingest marijuana or any marijuana product while in a motor vehicle being driven upon a highway.

(c)

A violation of this section shall be punished as an infraction.

Source: Section 23221, https://leginfo.­legislature.­ca.­gov/faces/codes_displaySection.­xhtml?lawCode=VEH§ionNum=23221.­ (updated Jan. 1, 2018; accessed Jun. 25, 2025).

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Verified:
Jun. 25, 2025

§ 23221's source at ca​.gov