A Clean Air Zone (CAZ) is an area in the United Kingdom where specific steps are taken to improve air quality. A CAZ may be a charging zone or a non-charging zone.
Whether a vehicle is charged for entering or traveling through a CAZ depends on the type of vehicle and its Euro standard. The cost of the charge is decided by the local government that manages the CAZ. Vehicles that meet ultra-low-emission standards are not charged for entering or traveling through a Clean Air Zone.
Other emission zones
- Greater London has a Low Emission Zone and an Ultra Low Emission Zone, covering most of the city. In the center of London, there is a Congestion Charge, which is a fee for motor vehicles.
- Oxford has a Zero Emission Zone in the city center.
- Edinburgh, Glasgow, Aberdeen, and Dundee each have a Low Emission Zone in their centers.