I live near a medium-busy street. I haven't seen actual numbers but it wouldn't surprise me if at peak hours there are over 100 cars passing per minute.

If 5% of those are overly loud, that's an average of a very loud noise every 3 seconds, and most of them will take somewhere between 5 and 10 seconds to come and finally go away. If you don't think that's large, we have very different noise thresholds.