The UK is not meeting its current targets on limiting air pollution. Therefore, pollutants from traffic fumes, factories and industrial sites put vulnerable people at risk. Highways England is preparing to introduce reduced speed limits on four locations by the end of September. The speed limit will be reduced to 60mph for a trial period to improve roadside air quality in areas which are identified as having high levels of nitrogen dioxide (NO2) from car engines. Each location is up to 4.5 miles long and the new speed limit reductions will be operational 24 hours a day. The reduced speed limits will be assessed after a year to see if they are having an impact. Asthma UK says co-ordinated measures are required at a local, national and European level to improve air quality; it believes not enough has been done. See