Press release 04/2021 from 16.02.2021 | Last changed: 29.04.2021
Air quality 2020: Only a few cities still exceed nitrogen dioxide limit
… since 2010 with the limit value for the protection of human health, which was adopted back in 1999. The fact that newly registered diesel cars have only recently … measured at urban stations near road traffic decreased during the first lockdown in spring 2020, by an average of 20 to 30 per cent. This is shown by … to region and from location to location. Since the traffic decrease due to the lockdown was mainly limited to a period of four weeks (23 March to 19 April), the effect …