London 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.
원문출처 : https://www.cnn.com/2019/04/08/business/ulez-london-emissions-scli-intl-gbr/index.html
원문출처 : https://www.cnn.com/2019/04/08/business/ulez-london-emissions-scli-intl-gbr/index.html