Emilia Romagna, Piemonte and Veneto have activated their winter smog schemes 1 October 2020. 

From 1 November 2020 diesel cars have to meet Euro 4 standard in Amsterdam's low emission zone. 

New EU project UVAR Box supports city authorities to help road users know about access regulations.

Leeds (UK) has stopped work on their low emission zone (clean air zone) due to improvements in air quality, as the LEZ may now not be needed.