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licence:ogl-v2|author:TfL|maintainer:GLA Environment Team|maintainer_email:[email protected]|description:"The central London Ultra Low Emission Zone (ULEZ) was introduced to clean up London’s most polluted air. It started on 8 April 2019, operates in the existing central London Congestion Charge Zone, 24 hours a day, every day of the year. Vehicles must meet strict emission standards to drive in the central London ULEZ area, or pay a charge. It replaced the Toxicity Charge (T-Charge) in central London and is in addition to the Congestion Charge. For more information about the central London ULEZ please visit-https://tfl.gov.uk/modes/driving/ultra-low-emission-zone"|update_frequency:ad-hoc|tags:[EV|air quality|pollution|MapLondon|airqualitymap]|london_smallest_geography:Custom Polygons|topics:[Environment|Transport] |