Annual emissions estimates for tyre wear, brake wear and road abrasion arising from fine particulate matter and benzo(a)pyrene for the period 1990 to 2018 (the most recent year for which data are available) can be found in the report 'Air Pollutant Inventories for England, Scotland, Wales and Northern Ireland:1990-2108' - https://uk-air.defra.gov.uk/assets/documents/reports/cat09/2010220959_DA_Air_Pollutant_Inventories_1990-2018_v1.2.pdf S6W...