Bristol Township, PA Noise from Specific Sources: Car Alarm Limits (2026)

Section 129-3I of the Bristol Township Code covers burglar alarms sounding, or being permitted to sound, in or on any building or motor vehicle. The alarm is lawful only if it terminates its operation within 10 minutes of being activated. Because the text names a motor vehicle expressly, a car alarm that keeps sounding past that mark is a violation of Chapter 129, and the Township Council declared it a nuisance in § 129-3.

The clock starts at activation, so a repeating or cycling alarm that continues beyond 10 minutes is outside the safe harbor. The person responsible is whoever sounds or permits the sounding. Section 129-5B reaches any person or business entity, including a business owner, renter, user or possessor.

A separate rule covers vehicle noise more broadly. Section 129-3J prohibits operating a motor vehicle or motorcycle on public rights-of-way in a way that the sound level constitutes a noise disturbance, and § 129-1A defines a noise disturbance as any sound that endangers the safety or health of any person, disturbs a reasonable person of normal sensitivities, or endangers personal or real property.

The exceptions in § 129-4 do not name car alarms. They cover emergency alert sounds, emergency work, permitted public gatherings, warning devices on authorized emergency vehicles or required for safety purposes, and emergency snow removal equipment.

Chapter 51 of the Bristol Township Code, Alarm Systems, is a separate regulatory scheme for alarm systems at protected locations, with user permits issued by the Director of Licenses, Zoning and Inspections. Section 51-11 there requires local alarm systems to have a timing mechanism that disengages the audible or visual alarm after a maximum period of 30 minutes. For a sounding vehicle or building alarm, the 10-minute text of § 129-3I is the limit printed in the noise chapter that police officers cite.