The air pollution control officer may observe and enforce all provisions of Division 12 (commencing with Section 24000) of the Vehicle Code relating to the emission or control of air contaminants, except Sections 27157, 27157.5, 27158, and 27158.5.
In observing and enforcing such provisions of the Vehicle Code, the air pollution control officer may stop, detain, and inspect any vehicle on a public highway. Any person who interferes with such action, or who refuses to stop a vehicle under his control upon the order, of the air pollution control officer is guilty of a misdemeanor.
Ca. Health and Saf. Code § 40753