A new ultra-low emission zone (ULEZ) is being introduced in London, to reduce harmful emissions from traffic and improve air quality. Those who drive polluting vehicles into the city centre will face a daily charge – £12.50 for cars, motorcycles and vans, and £100 for lorries, buses and coaches – on top of the existing congestion charge. By October 2021, the scheme will expand to cover an area 18 times larger.