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IMAGE: Xuelin Tian: Traffic congestion levels decreased by 69 per cent in Toronto and by 75 per cent in Montreal, compared to the same week of March in 2019.
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Credit: Concordia University
The COVID-19 pandemic that shuttered cities around the world did not just affect the way we work, study and socialize. It also affected our mobility. With millions of workers no longer commuting, vehicle traffic across Canada has plummeted. This has had a significant impact on the quality of air in major Canadian cities, according to a new study by Concordia researchers.
A paper published in the journal
Science of the Total Environment looked at downtown air quality monitoring station data from Vancouver, Edmonton, Saskatoon, Winnipeg, Toronto, Montreal, Halifax and St. John s. It compared the cities concentration levels of nitrogen dioxide, carbon monoxide and sulfur dioxide measured between February and August 2020 to the figures recorde ....

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