I looked into cars from your comment and it seems working hard toward regulation is the right approach.

I don't know about you, but I don't want cars flying over my backyard either.

You can do a lot to mitigate road noise by physically blocking it. That’s not so easy with air traffic.

Many cities regulate maximum vehicle noise levels.

As a European, everytime I'm in NYC the sound of horns and sirens is a non-stop nuisance — I personally enjoy the feeling for a few days because I don't live there, but I sympathise with actual New Yorkers who put up with this all year long. It's almost as bad as the garbage situation there.

IMHO, you guys need to put laws+fines in place to prevent the abusive use of horns (people literally use it even when they have to stop at a red light behind someone else...), and mandate that sirens only be used in real emergency situations. Big cities are so much nicer with less aggresive noises. Not to mention your liking automatic and hybrid cars makes traffic overall very silent by default.

New York is something of an exceptional case. Not that other cities are quiet, but the busy areas of New York take horns, sirens, etc. to the next level. Even someone generally used to urban living will find the general noise and congestion level exceptional. (By US standards. There are obviously other world cities that are very noisy and crowded as well.)

It only impacts individual vehicle’s maximum ability, not counting the horns and other sound warnings.

It’s still a hell of a noise when you have intermitent traffic mixed with ponctual congestion.

Maybe oblib is also trying to regulate cars.

I was beat to that action before I was born and in fact, by that time auto makers were advertising that their cars were were quiet. Luxury cars like Cadillacs were so quiet you couldn't even hear them running when standing outside right next to them and even quieter inside.

Try cutting off the "mufflers" on your car and see how far you get before getting pulled over a gifted a citation for it.