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Last reviewed: 6 July 2026
V55/5 form · Box 47
Drive-by Sound Level (dB(A))
What goes in box 47
Box 47 of the DVLA V55/5 form is for drive-by sound level (db(a)).
Take this from the Certificate of Conformity. Not needed if you're providing an IVA, GB conversion or MSVA certificate, but give it if you have it.
What to enter
| Field | Type | Required? |
|---|---|---|
Drive-by Sound Level (dB(A)) Take this from the Certificate of Conformity. Not needed if you're providing an IVA, GB conversion or MSVA certificate, but give it if you have it. | number | Optional |
Source
This page is generated from the same field definitions our V55/5 tool validates against, mapped to the official DVLA guidance.
V355/5 official guidance (GOV.UK)v55-5.com is an independent service and is not affiliated with the DVLA.
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