Amongst other things, you have to define a system of calibration that will stand up in court. I've read about speeding tickets getting tossed for lack of same.

Amongst other things, you have to define a system of calibration that will stand up in court. I've read about speeding tickets getting tossed for lack of same. That said, for all these communities surviving on / leaching off of ticket revenues, I've wondered why they haven't gone after these noise rats. Or a private entity whose business is selling equipment/systems to law enforcement. Put detectors on squad cars, and sell them a calibration setup. Pass and/or enforce some local noise ordinances, and...Ka-chinge! I've been tortured by neighborhood subwoofer dicks as well as straight pipe pricks. I'm sorry to be derogatory in tone, here, but those are the mildest words I can bring myself to use for them. A steady rush of tire noise or the like would be welcome by comparison. I too have serious privacy concerns WRT modern technology. However, seeing as that ship has sailed, stick such systems, with license plate readers, around town, and go after the violators. Triangulation, running video, and repeat logging to confirm the specific offender. In my county, ostensibly repeat offenders can escalate to having their vehicle impounded. Of course, in real life, nothing is done -- not even a ticket. People should be given a bit a time to e.g. fix a damaged exhaust. But for those who choose to inflict their noise on others? Better to ruin their lives, than let them ruin ours. (Can you tell the recent bout of warm weather had left me dealing with this in my neighborhood... :-/ Sorry for being a downer, here. But this is a real, significant stress, and one many friends share. One that is the result of another's willful, selfish choice.)