BOSTON: It may seem obvious, but research from the US confirms that opening the windows of your car can significantly reduce the risk of Covid-19 contamination.effectiveness varies in relation to the number of windows open and the speed of the car.
With all the windows open, the study shows two distinct air flows in the vehicle cabin, notably separating the left and right sides and maximizing the number of air changes per hour inside the car. Among the scenarios tested, keeping all windows closed and using the air conditioning system to provide air flow was by far the most risky. Between the two, opening the two front windows or the two rear windows gave mixed results.
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