Earlier quoted context omitted.
Do tires shed more dust at higher speeds? I wonder if this has always been a known but unstated problem, or if increasing highway speeds are causing it to get worse.
Great question, I have no idea. I wish the nationwide 55mph speed limit were reinstated, if only to reduce oil consumption. Added bonus that it might actually encourage more public transit and walkable cities. Nobody will take this idea seriously, the US is far too addicted to cars and lacks the density.
In places like SF and LA, even existing traffic laws are not enforced due to "equity".
https://www.ghsa.org/resources/Equity-in-Highway-Safety-Enfo...