Clean Air Zone
A Clean Air Zone is an area in the United Kingdom where targeted action is taken to improve air quality. A CAZ can be non-charging or charging.
Whether a vehicle is charged when entering or moving through a CAZ depends on the type of vehicle and the Euro standard of the vehicle. The amount charged is up to the local authority responsible for the CAZ. Ultra-low-emission vehicles are not charged when entering or moving through a Clean Air Zone.
Classes of charging Clean Air Zone
List of Clean Air Zones
Operational
Planned or suspended
Other emission zones
- Greater London has a Low Emission Zone and an Ultra Low Emission Zone, covering the majority of the city
- * In central London there is a Congestion Charge, a different type of charge for motor vehicles
- Oxford has a Zero Emission Zone in the city centre
- Edinburgh, Glasgow, Aberdeen and Dundee each have a Low Emission Zone in their centres
| Region | Type | Start date | Scope | Notes/references |
| London | LEZ | 2008 | Covers HGVs and buses around the Greater London area | |
| London | ULEZ | 2019 | Covers all other vehicles in the same area as the LEZ | |
| Oxford | ZEZ | 2022 | Covers all non-electric vehicles in the city centre. Operational 07:00 to 19:00 including Sundays | |
| Glasgow | LEZ | 2018 | Covers the city centre |