Just saw this in the news today, “Amsterdam to use ‘noise cameras’ against too loud cars”:
Quote:
The noise camera consists of a box containing four microphones that can detect precisely where a sound is coming from. The box is connected to a regular speed camera, which takes a photo of the license plate to issue a fine. If the data from the current experiment proves reliable, Amsterdam and other large cities will ask the Cabinet to have the technology certified.
I wonder if this is what @Harold had in mind! 