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District of Columbia Exhaust & Muffler Laws (2026)

Info: Exhaust mods amplifying noise above limits prohibited; in-use vehicle dB caps set by table (e.g.

InfoVerified Jun 19, 2026

Exhaust mods amplifying noise above limits prohibited; in-use vehicle dB caps set by table (e.g. 88 dBA at 50 ft) — 20 DCMR §§2811-2812.

Official source: dcrules.elaws.us →

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