18 Jun '12, 4pm

We Need to Reduce Non-Exhaust Pollution from Traffic (Dust from Brakes, Tires, etc)

We Need to Reduce Non-Exhaust Pollution from Traffic (Dust from Brakes, Tires, etc)

Although the aerodynamic diameters of these non-exhaust particulate emissions tend to be larger than those of exhaust emissions, they still can enter the respiratory system and possibly lead to adverse health impacts. Sources and types of non-exhaust atmospheric particulate matter include: Iron, copper, antimony, and barium from brake operation. Road surfaces are generally composed of either concrete or aggregate with a bituminous binder and abrasion of such a surface is likely to result in particulate matter of mineral origin. Tire wear is likely to result in predominantly carbonaceous particles, although small quantities of metals, in particular zinc which is used as a vulcanization activator, may be present. Material resuspended from the road surface may include all types of vehicle abrasion debris, in addition to material from non-road sources which has been deposited ...

Full article: http://www.treehugger.com/cars/we-need-reduce-non-exhaust...

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Estimated Traffic Net Worth $1,543.

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