Section 27002.

Cal. Vehicle Code - VEH § 27002.
in effect
Sign in to generate a plain English summaryAsk Belisarius Agent
(a) No vehicle, except an authorized emergency vehicle, shall be equipped with, nor shall any person use upon a vehicle any siren except that an authorized emergency vehicle shall be equipped with a siren meeting requirements established by the department. (b) An authorized emergency vehicle may also be equipped with a Hi-Lo audible warning sound meeting requirements established by the department. (c) A Hi-Lo warning sound may only be used to notify the public of an immediate evacuation in case of an emergency and is not a siren. For the purposes of Section 21055, a Hi-Lo shall not be used in lieu of a siren if the sounding of a siren is reasonably necessary pursuant to that section.

References

referencesCal. Vehicle Code - VEH § 21055.
Source: CA Legislative Counsel Bulk DataURL: https://downloads.leginfo.legislature.ca.gov/pubinfo_2025.zipFetched: 6/27/2026

Starting a business in California? California LLC guide: costs and requirements