Who is going to enforce these rules other than cops?
I mean yeah if they never get complains about a given area and they get one call about a loud car driving they're not going to come in lights and sirens to search for them. But if they consistently get complaints it will absolutely guide their decision-making around where to patrol, how often, etc.
Of course this assumes that the political leadership in your municipality hasn't decided that cops don't need to enforce laws (rare outside of a few large cities) and they're not busier with much more serious crimes, underfunded and understaffed, and just not able to spend time on noise complaints (rare but a common talking point).
I mean yeah if they never get complains about a given area and they get one call about a loud car driving they're not going to come in lights and sirens to search for them. But if they consistently get complaints it will absolutely guide their decision-making around where to patrol, how often, etc.
Of course this assumes that the political leadership in your municipality hasn't decided that cops don't need to enforce laws (rare outside of a few large cities) and they're not busier with much more serious crimes, underfunded and understaffed, and just not able to spend time on noise complaints (rare but a common talking point).