I don't think I'd let some government employee try that in my car.
I doubt his skills are up to controlling a big smokey burnout past the guy holding the meter.
Not to mention that the exhaust combined with the screaming tires would probably blow the sound meter.
David
[quote=Hans-Olof Blom]In Sweden the measurements are done during full acceleration. The person doing the test will drive about 30mph in second gear and approx. 30ft before the measuring point he floors it. The allowed level is 85dBA.