I don't buy it personally the idea that in anyway reducing car use will be worse off for air quality is bonkers. Particulates for tyres is in it's self is a real danger to public health which perversely is even worse from all electric vehicles. Equally the university of Sheffield showed that air quality inside a car was worse than outside of it.
I don't care whether you buy it or not, I was offering my informed opinion for free.
You've changed the point I made slightly by claiming I said reducing car use could be worse for air quality, when I said that moving people to the underground was not as clean and healthy as people may think due to the increased concentrations down there, which is clear and provable fact for anyone that cared to look.
Particulate from tyres could be an issue, but the primary sources could equally be re-suspended road dust, but measurements during lockdown showed that a bigger potential issue from electric vehicles was due to the change in formation of secondary particulate, formed by gasses in the atmosphere combining and separating between being particles and gasses and back again and the present view is that there is no safe concentration, and the speciation of these secondary particles
could be more harmful than those created from combustion. Don't forget, ICE vehicles will still be around for decades, and the improvements that would have come about had they still been potential production will no longer occur, so the cleaner technology is liable to be a couple of decades behind were it could otherwise have been.
Lockdown reductions also flagged the potential issue of the reduction in NOx leading to an increase in ground level ozone, which is more harmful than the gasses being replaced.
