Westminster Labour has welcomed the sharp fall in toxic gas since the Mayor introduced the Ultra Low Emission Zone
The level of a toxic gas produced by diesel engines has fallen by a third in central London since charges for the most polluting vehicles were introduced.
NO2 has fallen from 85 to 57 micrograms per cubic metre at the roadside in central London since October 2017, when Sadiq Khan, Mayor of London, introduced a £10 daily toxicity charge. The charge increased to £12.50 in April 2019 as part of the Ultra Low Emission Zone (ULEZ).
There were 13,500 fewer polluting cars driven into central London in Sptember 2019 compared with March 2019, a reduction of 38 per cent, according to a report by the Greater London Authority.
The amount of traffic in central London has fallen by up to 9 per cent since 2018, suggesting that the introduction of the charge has prompted some people to give up driving into the centre. The ULEZ levy has also caused carbon dioxide emissions from road transport to fall by 4 per cent.