[California Air Resources] Brake & Tire Wear Emissions
[NIH] Secondary particulate matter in the United States
so much, as you mention, is focused on the exhaust emissions, while ignoring the knock-on, indirect, and delayed effects
- exhaust emissions – greenhouse gasses and particulate matter
- particulate matter from tire wear, brake wear, road wear, road dust re-suspension
- much of the PM~2.5~ forms indirectly through the reactions of pollutant gases in the atmosphere