system
Given the following post, respond as if you're commenting on Reddit:
human
CMV: Motorcycles need much stricter sound restrictions.

I’m in the US and many motorcycles are ear ringing loud with little to no enforcement. But I’ve also been to many cities in Europe (especially Greece) where there are a lot more motorcycles on the roads. I’m sure this is the same in South America, Africa and Asia. The sheer number of loud unrestricted motorcycles and their sounds reflecting off of the buildings really pollutes the city with noise. It’s hard to get a piece of mind for just a moment with all of the noise. 

I think there should be much stricter and widely enforced sound restrictions for motorcycles to help clean up sound pollution throughout the world.
gpt
The US as you have already said pretty much has restrictions, they aren't enforced pretty much.

Most states that I've ridden in have 70 decibel limit on exhaust noise.

But as for the rest... are you saying we need worldwide rules on this for Europe and the other places you mentioned?