As of January 1, 2019, a modified exhaust on an automobile or motorcycle, excessively loud, can no longer be cited as a correctable violation and a fine will be mandatory according to the California Highway Patrol.

Assembly Bill AB1824 has taken away the opportunity to correct the violation and requires a citation for such violation to result in a fine only. In many cases it may also result in a trip to the Bureau of Automotive Repair B.A.R.

If you were previously cited, you can correct the violation to avoid a fine.