
Credit: carsdirect.com
As Green Car Congress points out, weight is a major factor for vehicles and EV batteries are heavy. Time to look at real issues instead of non-existent ‘carbon pollution’.
Pollution from tire wear can be 1,000 times worse than a car’s exhaust emissions, Emissions Analytics has found.
Emissions Analytics is an independent global testing and data specialist for the scientific measurement of real-world emissions and fuel efficiency for passenger and commercial vehicles and non-road mobile machinery.
Harmful particulate matter from tires—and also brakes—is a growing environmental problem, and is being exacerbated by the increasing popularity of large, heavy vehicles such as SUVs, and growing demand for electric vehicles, which are heavier than standard cars because of their batteries.
Vehicle tire wear pollution is completely unregulated, unlike exhaust emissions which have been rapidly reduced by car makers due to the pressure placed on them by European emissions standards.
New cars now emit very little in the way of particulate matter but there is growing concern around non-exhaust emissions (NEEs).
Non-exhaust emissions are particles released into the air from brake wear, tire wear, road surface wear and re-suspension of road dust during on-road vehicle usage.
No legislation is in place to limit or reduce NEEs, but they cause a great deal of concern for air quality. NEEs are currently believed to constitute the majority of primary particulate matter from road transport, 60% of PM2.5 and 73% of PM10.
In the 2019 report ‘Non-Exhaust Emissions from Road Traffic’, the UK Government’s Air Quality Expert Group (AQEG), recommended that NEEs are immediately recognized as a source of ambient concentrations of airborne particulate matter, even for vehicles with zero exhaust emissions of particles—such as EVs.
Full report here.