"On that topic: I wish we could have acoustical limits on vehicle noise." I'm fairly certain there will be in your country. There are in the UK at least - it's

"On that topic: I wish we could have acoustical limits on vehicle noise." I'm fairly certain there will be in your country. There are in the UK at least - it's a requirement that's supposedly checked when vehicles have their annual roadworthiness test. The problem is A) it's a subjective measure, open to the testers judgement and B) there's nothing stopping the owner re-tuning their vehicle before & after the test to get a pass. So ultimately, it's just not policed. Let me preface this with "I do not have any data to back this up" but my gut tells me about 90% of road noise is caused by 10% of traffic. In London at least. "Those loud motorcycles with the fat pipes: they seriously need to control those." I'm totally with you on these, but really it's any of these two-stroke bastards, even mopeds these days. The fashion is to tune them to the point of nuisance.