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Oyster Bay, NY Noise from Specific Sources: Car Alarm Limits (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Auto-shutoff limit
6 minutes
Covers
exterior + vehicle burglar alarms
Routine test cap
60 seconds
Full-system test window
once a month, 8am-6pm
First offense fine
up to $350

Summary

Oyster Bay requires every exterior burglar alarm and motor vehicle burglar alarm to shut itself off automatically within six minutes of going off. Letting a car alarm sound longer than that violates the Town's noise chapter, punishable through the Department of Environmental Resources or the Bureau of Administrative Adjudication.

(c) Sounding or permitting the sounding of any exterior burglar alarm or any motor vehicle burglar alarm unless such alarm is automatically terminated within six minutes of activation.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4036544; v24 updated 2023-03-07; through 03-07-2023).

Full Breakdown

Section 156-4B(14) groups car alarms with other emergency signaling devices under the Noise chapter's specific prohibited acts. Subsection (14)(a) bars intentionally sounding a fire, burglar or civil defense alarm outdoors except for genuine emergency purposes or permitted testing. Subsection (14)(c) then targets alarms directly: sounding or permitting the sounding of any exterior burglar alarm or any motor vehicle burglar alarm is prohibited unless the alarm is automatically terminated within six minutes of activation. In practice, an alarm can trip and sound, but the vehicle's own alarm system must be built or set to cut itself off within six minutes; an alarm that keeps sounding past that mark is a chapter violation regardless of who owns the vehicle or why it went off. , but that testing carve-out does not extend the six-minute cap on a triggered car alarm. 2.

Violations & Fines

A first car-alarm violation under Chapter 156 draws a fine up to $350 or up to six months in jail, or both. A second offense within five years runs $350 to $700, and a third or later offense in that five-year window runs $700 to $1,000, with the same six-month cap. The Bureau of Administrative Adjudication can impose a monetary penalty in the same ranges instead of a court case.

Frequently Asked Questions

How long can a car alarm legally sound in Oyster Bay?
Under § 156-4B(14)(c), an exterior or motor vehicle burglar alarm must automatically terminate within six minutes of activation; letting it sound longer is a Chapter 156 noise violation regardless of the cause.
Is testing a car alarm exempt from the six-minute rule?
The chapter's testing carve-out in § 156-4B(14)(b) applies to stationary emergency signaling devices, not vehicle alarms, and even that testing is capped at 60 seconds for a routine test, so there is no separate testing exception for car alarms.
Who enforces the car alarm rule?
The Town's Department of Environmental Resources enforces Chapter 156, and violations can be prosecuted under § 156-8 or resolved through the Bureau of Administrative Adjudication under § 156-8.2, with fines rising from $350 to $1,000 for repeat offenses within five years.

Sources & Official References

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