High levels of NO2 can cause a flare up of asthma or symptoms such as coughing and difficulty breathing. A leading cause of NO2 pollution is emissions from road traffic.
With toxic air above limits affecting huge swathes of the UK, Friends of the Earth is campaigning for Clean Air Zones to be rolled out in far more places than are currently being planned, supported by measures such as improved infrastructure to support safe cycling and walking. This would see fewer polluting vehicles on our roads and would ultimately improve public health. Removing such vehicles would also contribute to reducing carbon emissions and fighting climate change.