Fixing 25% of cars can address 90% of road side air pollution, UoT study

| April 30, 2015

New study from the University of Toronto found that 25% of cars on the road are responsible for 90% of air pollution that we breathe in. According to the study, older models, badly tuned vehicles, and supped up muscle cars are contributed an overwhelming portion of the bad stuff we need to breathe in.

For example, the report found that these 25% worst offenders are responsible for 95% of black carbon, otherwise known as soot, 93% of carbon monoxide, and 76% of volatile organic compounds such as benzene, toluene, ethylbenzene and xylenes – stuff that give you cancer.

“The most surprising thing we found was how broad the range of emissions was. As we looked at the exhaust coming out of individual vehicles, we saw so many variations. How you drive, hard acceleration, age of the vehicle, how the car is maintained – these are things we can influence that can all have an effect on pollution,” said UoT chemical engineer Greg Evans. “It used to be that we measured air quality on a regional or city scale. But now we’re starting to understand that we need to measure air quality on a more micro scale, especially around major roadways.”

Read more: UoT release

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Category: Smart cities, Wires

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