Clean Air Zone

A Clean Air Zone (CAZ) is an area in the United Kingdom where targeted action is taken to improve air quality.[2] A CAZ can be non-charging or charging.

See also: Low-emission zone

Clean Air Zone
White cloud symbol on a light green circle
Clean Air Zone traffic sign symbol
LocationSee ยง List of Clean Air Zones
Launched5 March 2021 (in Bath)[1]

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
Class Vehicle Charge applies to vehicles
below this Euro standard
Class A Bus
Coach		 Euro VI
Taxi and private hire Euro 6 (diesel)
Euro 4 (petrol)
Class B Bus
Coach
HGV		 Euro VI
Taxi and private hire Euro 6 (diesel)
Euro 4 (petrol)
Class C Bus
Coach
HGV		 Euro VI
Taxi and private hire
Minibus
LGV		 Euro 6 (diesel)
Euro 4 (petrol)
Class D Bus
Coach
HGV		 Euro VI
Taxi and private hire
Minibus
LGV
Private cars		 Euro 6 (diesel)
Euro 4 (petrol)
Motorcycles (optional)
Mopeds (optional)		 Euro 3

List of Clean Air Zones
Region Type Date of implementation Scope Notes References
Bath Class C 15 March 2021[1] A wide central area Reduced nitrogen dioxide levels by 26% in 2022/2023, meeting legal standards. [3][4]
Birmingham Class D 1 June 2021 All the roads within the A4540 Ring Road [5][6]
Bradford Class C+ September 2022 The area inside and including the Bradford outer ring road, extending to Shipley and Saltaire. [7]
Bristol Class D 28 November 2022 A wide central area extending the North Somerset boundary, including the main route between Wales and Bristol Airport. Originally planned as class B with additional diesel vehicle ban in parts of city centre between 07:00 and 15:00. Changed to class D due to government rejection. [8][9]
Derby Non-charging 2020 Traffic management measures on Stafford Street [10]
Greater Manchester Class B All local roads in the county Taxis and private hire vehicles registered within county exempt for first 12 months. Under review. [11][12][13]
Leeds Class B City centre All roads within the boundary of the A61 and A63. Plans postponed in 2020 due to COVID-19 pandemic in England. [14][15]
Leicester Class A Plans scrapped. [16]
Newcastle Class C July 2022 City centre [17]
Nottingham Non-charging 2020 Retrofitting buses, regulating taxis, converting council-owned vehicles [18]
Portsmouth Class B 29 November 2021 City centre area excluding port and naval base [19]
Sheffield Class C 27 February 2023 Inner ring road and the city centre [20]
Southampton Non-charging 2020 Retrofitting buses, regulating taxis, cleaner fuels and equipment at Southampton's port, cycling infrastructure [21]

Other emission zones

References
  1. Bath's Clean Air Zone: Annual report summary 2021 (PDF). Bath: Bath & North East Somerset Council. 16 June 2022. p. 3. Archived from the original (PDF) on 27 August 2023. Retrieved 27 August 2023.
  2. "Clean Air Zone Framework" (PDF). DEFRA and DfT. May 2017.
  3. "Bath's Clean Air Zone". Bath and North East Somerset Council.
  4. Barltrop, Paul (25 August 2023). "Bath air quality improves since introduction of clean air zone". BBC News. Retrieved 26 August 2023.
  5. "A clean air zone for Birmingham". Birmingham City Council.
  6. "Clean Air Zone timing and charges | A clean air zone for Birmingham | Birmingham City Council".
  7. "Bradford Clean Air Zone to start in January 2022". BBC News. 2 March 2021.
  8. Cork, Tristan (6 July 2022). "Clean Air Zone start date finally announced". Bristol Post. Retrieved 22 August 2022.
  9. Rob. "CHARGES". Clean Air for Bristol. Retrieved 1 September 2021.
  10. "Derby submit Outline Business Case to government which confirms no CAZ". Air Quality News. 5 March 2019.
  11. "Greater Manchester Clean Air Plan proposals". Clean Air GM.
  12. "Greater Manchester delays CAZ until 2022". Air Quality News. 21 May 2020.
  13. "GMCA 210621 Report Clean Air Plan" (PDF). GMCA. 25 June 2021.
  14. "Air Quality". Leeds City Council.
  15. "Leeds Clean Air Zone suspended for the foreseeable future". Air Quality News. 19 August 2020.
  16. "Leicester CAZ plans scrapped". Air Quality News. 6 April 2021.
  17. "Latest delays to Newcastle Clean Air Zone pollution tolls 'condemning more of us to early deaths'". The Northern Echo. 26 July 2021.
  18. "GClean air zone proposals". Sheffield City Council.
  19. "Charging Clean Air Zone". Portsmouth City Council.
  20. "Clean air zone proposals". Sheffield City Council.
  21. "Clean Air Update". Southampton City Countil. January 2019.
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