Maybe I have sensitive hearing, but this is a big problem for me going back over 20 years.
Right now, there is a construction project going on 2000 feet from my apartment, and I can hear the beeping right through my closed windows with the blinds or curtain drawn, depending on which window.
When I am visiting my parents in New York City, I can hear the beeping noise as trucks back up some 4 blocks away. I've looked out the window and scanned for the source of the noise, and that's what I've found.

As an attorney, the way I would approach this is that I would try to generate a campaign and get the attention of a governor or attorney general. Such a person could get political capital out of resolving this situation.

A governor might indicate that s/he wants to hand out engineering grants so bright engineering minds can come up with alternative solutions.

An attorney general would probably file a public nuissance lawsuit, and then try to negotiate a settlement whereby industry agrees to put some bright minds on this, and then when a solution is found, to build it into new vehicles and machinery, and to retrofit the existing stock by a particular date.

I just wrote a letter to the attorney general of Virginia and I'll write another to the governor.

Brad- contact me if you want to cooperate on this.