Clean Air Zones are similar to but not the same as Low Emission Zones. Clean Air Zones are intended to incorporate more than just restrictions to the most polluting vehicles. They will include other measures designed to complement a CAZ and, where possible, to mitigate some of the negative impacts. To ensure that we are consistent with other cities in the UK, we must use the Government’s Clean Air Zone Framework rather than a city-specific LEZ. This consistency helps businesses to better adapt to the changes and avoids confusion for those travelling between different cities.