Live · ADR 28/01
Bay 2 · Post-mod idle
74.2dB(A)
ADR limit90 dB(A)
Full ADR compliance flow
Bonus composition wiring every primitive into a single end-to-end story: approval workflow → declaration → live sound meter → sound test reports → RPM correlation → drive-by → inspector sign-off → certificate. Side rail surfaces the ADR rule reference and the roadworthy vs ADR comparison. Footer shows the workshop pass/fail counter.
Production answer
Full ADR compliance flow is a reusable Oak Flats Muffler Men UI primitive with documented states, accessibility expectations, theme behavior, and implementation evidence.
Primary CTAReview Full ADR compliance flow states
Generative search brief
Full ADR compliance flow: Bonus composition wiring every primitive into a single end-to-end story: approval workflow → declaration → live sound meter → sound test reports → RPM correlation → drive-by → inspector sign-off → certificate. Side rail surfaces the ADR rule reference and the roadworthy vs ADR comparison. Footer shows the workshop pass/fail counter.
From declaration to certificate
Every modification follows the same documented flow so the workshop, customer and NSW regulator see the same evidence trail.
Customer declaration
Customer signs the modification + ADR awareness declaration. Workshop captures rego, VIN and the modification scope.
Pre-modification test
Capture stationary dB(A) baseline at the certified microphone position. Stored to the job file.
Modification work
Fit the cat-back, manifold or muffler change. Photograph every join and joint for the evidence pack.
Post-modification test
Re-measure stationary dB(A), then drive-by. Confirm the post-mod result is within the ADR band.
Certificate of compliance
Issue the ADR certificate with technician sign-off, verification QR and a copy mailed to the customer.
Sound test report · ADR 28/01
Pre-modification capture
Tested
Pre-modification72.4dB(A)
+11.8dB
Post-modification84.2dB(A)
Pre-mod capture0–2.5 s
Post-mod capture0–2.5 s
Microphone position0.5 m stationary · ADR limit 90 dB(A)
Signed off
Sound test report · ADR 28/01
Post-modification capture
Tested
Pre-modification84.2dB(A)
+4.4dB
Post-modification88.6dB(A)
Pre-mod capture0–2.5 s
Post-mod capture0–2.5 s
Microphone position3/4 rated rev · ADR limit 90 dB(A)
Signed off
RPM × dB correlation
2008 Holden VE Commodore SS — Sedan · sweep 800 → 6,500 RPM
Stationary close-proximity protocol · cabin closed.ADR 90 dB(A) limit
Drive-by noise · ADR 90 dB(A) limitWithin ADR
86.2dB(A)
Pass
Drive-by · stage test
2008 Holden VE Commodore SS — Sedan
Measured against ADR drive-by close-proximity protocol.- Test speed
- 50km/h
- Ambient
- 52.0dB(A)
- Δ vs ambient
- +34.2dB
Signed off · ADR compliance
Will Brierley
Licence MVRL 78421CertificateofCompliance
This is to certify that the work described below has been performed in accordance with the relevant Australian Design Rules and the in-service vehicle standards of New South Wales.
- Issued to
- Mason Carragher
- Vehicle
- 2008 Holden VE Commodore SS — Sedan
- Registration
- ABC123
- VIN
- 6H8VFZ72F8L123456
- Work certified
- 2.5″ stainless cat-back with high-flow centre muffler, resonator delete and OEM-spec tailpipes.
- ADR reference
- ADR 28/01 + NSW VSI 08