Noise from Specific Sources in Ontario, CA (2026)
1 verified noise from specific sources rules for Ontario, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
Car Alarm Limits
Ontario exempts vehicle and building alarms from its general noise standards only if the alarm shuts itself off within 45 minutes of activation. Under Ontario Municipal Code § 5-29.06(c), an alarm or bell that runs longer than 45 minutes in an hour loses its exemption and becomes an enforceable noise violation.
Ontario Vehicle Alarm 45-Minute Cutoff
Light RestrictionsOntario Municipal Code § 5-29.06(c)
(c) Any mechanical device, apparatus or equipment used, related to or connected with emergency machinery, vehicle, work or warning alarm or bell, provided the sounding of any bell or alarm on any building or motor vehicle shall terminate its operation within forty-five (45) minutes in any hour of its being activated;
Looking for San Bernardino County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Ontario city rules.
Noise from Specific Sources in San Bernardino County →