the California State Legislature has approved a five-year automated enforcement pilot program targeting loud exhaust from cars. If signed by California Governor Gavin Newsom, the camera-enforcement program will begin January 1. The bill specifies six undisclosed cities throughout California to take part in this experimental program.
A "sound-activated enforcement system" means sensors are activated when noise levels exceed legal limits, and smart cameras are used "to obtain a clear photograph of a vehicle license plate," the text of Senate Bill 1079 reads. Similar to speed-camera thresholds found around the world, these cameras are triggered by high decibel levels and can zero in on the offender's plate.
Signage is required to notify motorists before they enter an enforcement zone. First time offenders will not be charged and only subsequent violations will incur fines.
Some cars (Porsche, Vette, Hellcats) and many motorcycles, depending on the road and driving style, will easily exceed the 95 and 80 decibel limits straight from the factory.