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Traffic and Pollution Plummet as US Cities Shut Down for Coronavirus (nytimes.com) 55

In cities across the United States, traffic on roads and highways has fallen dramatically over the past week as the coronavirus outbreak forces people to stay at home and everyday life grinds to a halt. Pollution has dropped too. From a report: A satellite that detects emissions in the atmosphere linked to cars and trucks shows huge declines in pollution over major metropolitan areas, including Los Angeles, Seattle, New York, Chicago and Atlanta. In Los Angeles, as businesses and schools have closed this month and drivers have stayed off the roads, air pollution has declined and traffic jams have all but vanished.

Preliminary data from the European Space Agency's Sentinel-5P satellite show that atmospheric levels of nitrogen dioxide, which are influenced in large part by car and truck emissions, were considerably lower over Los Angeles in the first two weeks of March compared to the same period last year. Air pollution from vehicles has likewise plummeted in the Seattle area, which had one of the earliest recognized coronavirus outbreaks in the country. Traffic patterns there changed drastically before most other cities. [...] In New York City, residents are less dependent on car travel than in other metro areas, but vehicle traffic has still seen a steep drop-off in recent days as office buildings, schools and restaurants have shut down. On Wednesday afternoon, rush-hour traffic moved 36 percent faster than normal as the roads cleared out, according to data from INRIX.

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Traffic and Pollution Plummet as US Cities Shut Down for Coronavirus

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