Watsonville, CA Noise Ordinances: Vehicle Noise (2026)

Section 5-8.02(b) of the Watsonville Municipal Code targets sound from vehicles directly. It lists as an offensive noise the use, operation or permitting of any radio receiving set, stereo, tape recorder, sound amplifier or other sound machine or device in a motor vehicle on any public street, at any time, with volume louder than is necessary for convenient hearing for the persons in that vehicle who are voluntary listeners. This subsection has no quiet-hours window. The words are "at any time," so the rule applies at midday as much as at night.

The yardstick is distance. When the sound is plainly audible at ten feet from the motor vehicle in which the device is located, that fact is prima facie evidence of a violation of the chapter. Compare the residential stereo rule in subsection (a), which sets the plainly audible distance at fifty feet from the residential building, structure or vehicle and applies only between 10:00 p.m. and 7:00 a.m.

The rule sits inside Chapter 8 of Title 5. Section 5-8.01 frames that chapter as a ban on offensive, excessive, unnecessary or unusually loud noise, or any noise that annoys, disturbs, injures or endangers the comfort, repose, health, peace or safety of others, on residential property or a public way within the City. The list in Section 5-8.02 is expressly not exclusive. Section 5-8.04 exempts noise that is subject to the noise regulations in Title 14 of the Code or for which a permit has been issued under Chapter 34 of Title 5.

Motorcycle exhaust has its own provision. Section 5-29.05 requires every motorcycle operating on an unimproved road, unimproved private property or a public park to carry an adequate muffler in constant operation that meets the motor vehicle noise limits of the State Vehicle Code. Section 5-29.02 requires a permit from the Fire Chief for that off-road riding.