Psychotic delusional system.
I’d be curious to know how much of the airborne fine particulate matter is from combustion of #6 and #4, and how much is from tire particles. You would be amazed how much is in the air in a big city. We were involved in doing some indoor air quality studies some years ago (mid-90s), and couldn’t figure out why one of the tenant’s floors had all sorts of particulates in the outdoor air being introduced into the space, and the others didn’t. It turned out that the upper floors were getting their outside air from the roof, and the lowest floor was getting its outside air from grates down at grade.
I wonder if the people coming up with these rules have looked at such things, or if they’re just environmental extremists with “ban it all, as soon as we can get away with it” attitudes.