London (capital city of the UK) is the first city in the world to implement a 24-hour, seven day a week Ultra Low Emission Zone (ULEZ), inside which vehicles will have to meet tough emissions standards or face a charge. Introduction of the ULEZ aims to reduce toxic air pollution and protect public health, according to a press release from the office of Sadiq Khan, mayor of London. Vehicles are responsible for around half of harmful nitrogen oxide air emissions in the British capital.
