Sounds like a new game for the local lads......
The "lads" congregate near the "Noise Camera", just as a bog stock family car passes the "sound measuring area", make some very loud artificial noise and then..... snap, the picture is taken, and Daddy, Mummy and the two kids receive a fine in the mail.
Hmmm, I don't think I'd be paying one of those fines in a hurry!!!