Tyre emis­sions alert

Small par­ti­cle emis­sions threat New re­port high­lights dan­gers

Auto Express - - Contents - Martin Saari­nen Mart­in_saari­nen@den­nis.co.uk @Ae_­con­sumer

Con­cern grow­ing at level of pol­lu­tion caused by tyres

MAN­U­FAC­TUR­ERS could face lim­its on the type of tyres and brakes they can use in the fu­ture, as ex­perts pre­dict leg­is­la­tors could soon turn their at­ten­tion to par­ti­cle mat­ter emis­sions from these com­po­nents.

A re­cent re­port by Trans­port for Lon­don and the Greater Lon­don Author­ity found that par­ti­cle mat­ter (PM) 2.5 emis­sions are a con­trib­u­tor to 29,000 pre­ma­ture deaths a year in the UK, and are “widely ac­knowl­edged as be­ing the pol­lu­tant which has the great­est im­pact on hu­man health”.

Small-par­ti­cle emis­sions are linked to the use of wood-burn­ing stoves, con­struc­tion and the trans­port sec­tor – in par­tic­u­lar, wear from tyres and brakes. In cities such as Lon­don, ve­hi­cles con­trib­ute to more than half of PM2.5 emis­sions, with the cap­i­tal al­ready in breach of its pol­lu­tion lim­its set by the World Health Or­gan­i­sa­tion.

As the trans­port sec­tor moves into elec­tric ve­hi­cles, ni­tro­gen ox­ide and car­bon diox­ide emis­sions will sig­nif­i­cantly de­crease, leav­ing emis­sions from tyres and brakes as the po­ten­tial next con­cern. The re­port es­ti­mates that by 2030, 90 per cent of trans­port-re­lated PM2.5 emis­sions will come from these parts. It also says there’s a need for ad­di­tional na­tional and in­ter­na­tional leg­is­la­tion to clamp down on lo­cal air pol­lu­tion.

Speak­ing to Auto Ex­press, Greg Archer, clean ve­hi­cles direc­tor at cam­paign group Trans­port & En­vi­ron­ment, said: “It’s en­tirely true that as one source of emis­sions comes un­der con­trol, other sources will be­come more im­por­tant to au­thor­i­ties.” Archer added that while emis­sions from brakes will de­crease as EVS adopt re­gen­er­a­tive brak­ing, this may not be enough.

Ce­line Cluzel, as­so­ciate direc­tor at en­vi­ron­men­tal and pol­icy con­sul­tancy El­e­ment En­ergy, said: “Once 90 per cent of the dan­ger­ous emis­sions left will be from tyre and brake wear, it would seem log­i­cal that tyre materials and wear pro­cesses get in­ves­ti­gated.” She added: “Reg­u­la­tion on tyres would not be the re­mit of cities, though, but rather for the cen­tral Gov­ern­ment and the Euro­pean Com­mis­sion to set the bar.”

The Euro­pean Tyre & Rub­ber Man­u­fac­tur­ers’ As­so­ci­a­tion told Auto Ex­press that pre­vi­ous re­search – pro­duced through the Tyre In­dus­try Project – has found that tyre and road wear par­ti­cles “do not sig­nif­i­cantly con­trib­ute to the PM10 and PM2.5 lev­els”. The as­so­ci­a­tion added that test­ing on rats found “no ad­verse car­diopul­monary ef­fects”.

“Yes, it’s en­tirely true that as one source of emis­sions comes un­der con­trol, other sources will be­come more im­por­tant to au­thor­i­ties”

Clean ve­hi­cles direc­tor for Trans­port & En­vi­ron­ment

Ef­forts to tackle ve­hi­cle emis­sions could next turn to re­duc­ing small par­ti­cles from tyre and brake wear CLEAN UP Greg Archer

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