No legislation is currently in place to specifically limit or reduce particles from tyres. Photo: © Shutterstock – cla78
Action needed to cut PM from tyres and brakes
A recent report from the UK Air Quality Expert Group (AQEG) warns about the increasing importance of non-exhaust emissions (NEE) from road traffic. NEE refers to tiny particles released into the air from brake wear, tyre wear, road surface wear and resuspension of road dust when vehicles are driving on roads. No legislation is currently in place to specifically limit or reduce these particles.
It is estimated that NEE particles currently constitute 60 and 73 per cent (by mass), respectively, of primary PM2.5 and PM10 emissions from road transport in the UK (7.4 and 8.5 per cent of all UK primary PM2.5 and PM10 emissions), and will become more dominant in the future. Achieving further improvements in PM2.5 and PM10 air quality in relation to road transport sources will also require reductions in non-exhaust emissions, rather than simply focussing on lowering exhaust emissions, said the AQEG.
The report “Non-exhaust emissions from road traffic” published by Defra, 11 July 2019.