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The contribution of tire and brake pad wear is really quite low compared to other sources of air pollution. From Evangeliou et al. (2020), Atmospheric transpor
by peter5878 6y ago
The contribution of tire and brake pad wear is really quite low compared to other sources of air pollution.
From Evangeliou et al. (2020), Atmospheric transport is a major pathway of microplastics to remote regions, page 3:
"Surface concentrations of tire wear particles (TWPs) range between a few ng.m−3 and 20 ng.m−3 for PM2.5 and up to 50 ng.m−3 for PM10 (Supplementary Movie 1). Brake wear particle (BWP) surface concentrations reach 50 ng.m−3 at maximum (Supplementary Movie 1). The highest concentrations were calculated for eastern USA, Europe and South-eastern Asia. All concentrations (TWPs 0.4 μg.m−3 for PM2.5, 1.8 μg.m−3 for PM10; BWPs 0.8 μg.m−3 for PM2.5, 1.4 μg.m−3 for PM10) were far below air quality limits for PM (annual mean 10 μg.m−3 for PM2.5, double for PM10) and lower than typical black carbon (BC) concentrations in remote regions."
https://www.nature.com/articles/s41467-020-17201-9 https://www.nature.com/articles/s41467-020-17201-9
- swsieber 6y agoBut the type of pollution does matter. An important question is does it have a greater impact. And given the studies linking health to distance from the freeway, I think that question needs further investigation.
- novok 6y agoElectrics have less brake wear and probably more tire wear due to weight increases.
- stevenwoo 6y agoYou are correct but the particles from tires make a signficant contribution to pollution in the ocean! I neglected to separate that out from the GP's air pollution discussion. https://www.latimes.com/environment/story/2019-10-02/california-microplastics-ocean-study https://www.latimes.com/environment/story/2019-10-02/califor...