Yakima, WA Noise Ordinances: Vehicle Noise (2026)
Key Facts
- Jake brake ban
- Citywide, 24/7
- Exemption
- Municipal fire vehicles only
- Defense
- Bona fide emergency (driver's burden)
- Required signage
- "Unmuffled Compression Brakes Prohibited"
- Penalty
- Traffic infraction under § 9.60.030
Summary
Yakima outlaws unnecessarily loud vehicle noise from sudden starts, stops, exhaust or a bad muffler, and separately bans compression ("jake") braking citywide at all times under YMC § 9.50.260, with only a narrow bona-fide-emergency defense and required "Unmuffled Compression Brakes Prohibited" signage.
(a) It is unlawful to operate any vehicle in such a manner as to cause any unnecessary or unreasonably loud noise, whether due to sudden starting, sudden stopping, exhaust explosion, lack of proper muffler, or by any other means. (b) It is unlawful for any vehicle, other than any vehicle of any municipal fire department, to use compression braking, also known as engine braking or "jake brakes," at any time. It shall be an affirmative defense to a violation of subsection (b) of this section that said compression braking occurred during a bona fide emergency. (c) Posting of Notice. The city of Yakima public works department shall post at reasonable locations within the city of Yakima signs indicated "Unmuffled Compression Brakes Prohibited" or substantially similar wording. (d) Penalty. Violation of amended YMC § 9.50.260(b) shall be punishable as a traffic infraction under the same terms and conditions described in YMC § 9.60.030.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4980636; v1 updated 2026-08-03; through 08-03-2026).
Full Breakdown
260 splits vehicle noise into two rules. " It sets no decibel meter reading, relying instead on the "unnecessary or unreasonably loud" standard. " The ban is citywide and around the clock, not limited to residential areas or nighttime, and exempts only municipal fire apparatus. The lone defense is built into the same sentence: "It shall be an affirmative defense to a violation of subsection (b) of this section that said compression braking occurred during a bona fide emergency," meaning the driver must prove the emergency rather than the city disproving it.
Subsection (c) requires the public works department to post signs reading "Unmuffled Compression Brakes Prohibited" or similar wording at reasonable locations around the city, giving truckers advance notice before a jake-brake zone. 030," Yakima's general traffic-penalty section.
Violations & Fines
A jake-brake violation under § 9.50.260(b) is a traffic infraction enforced through YMC § 9.60.030, the same section that sets a $20 base fine for listed parking infractions and, for any traffic-title violation without a specifically assigned penalty, misdemeanor exposure of up to $500 and 90 days in jail. A general unreasonable-noise violation under subsection (a) is likewise chargeable as a traffic infraction, and repeated unmuffled-noise complaints can also trigger Yakima's separate public disturbance noise ordinance at YMC § 6.04.180.
Frequently Asked Questions
Are jake brakes illegal everywhere in Yakima, or just near homes?
Is there a decibel limit for loud exhausts in Yakima?
What if I have to jake-brake to avoid an accident in Yakima?
Sources & Official References
Other rules in Yakima
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